diff --git a/lte/CMakeLists.txt b/lte/CMakeLists.txt
index 01e72ea15bd..44b08a29240 100644
--- a/lte/CMakeLists.txt
+++ b/lte/CMakeLists.txt
@@ -1,6 +1,8 @@
 # ##############################################################################
 # apps/lte/CMakeLists.txt
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more contributor
 # license agreements.  See the NOTICE file distributed with this work for
 # additional information regarding copyright ownership.  The ASF licenses this
diff --git a/lte/Make.defs b/lte/Make.defs
index 89c366ca2fa..70956ea219a 100644
--- a/lte/Make.defs
+++ b/lte/Make.defs
@@ -1,36 +1,23 @@
 ############################################################################
 # apps/lte/Make.defs
 #
-#   Copyright 2021 Sony Semiconductor Solutions Corporation
+# SPDX-License-Identifier: Apache-2.0
 #
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
+# Licensed to the Apache Software Foundation (ASF) under one or more contributor
+# license agreements.  See the NOTICE file distributed with this work for
+# additional information regarding copyright ownership.  The ASF licenses this
+# file to you under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License.  You may obtain a copy of
+# the License at
 #
-# 1. Redistributions of source code must retain the above copyright
-#    notice, this list of conditions and the following disclaimer.
-# 2. Redistributions in binary form must reproduce the above copyright
-#    notice, this list of conditions and the following disclaimer in
-#    the documentation and/or other materials provided with the
-#    distribution.
-# 3. Neither the name of Sony Semiconductor Solutions Corporation nor
-#    the names of its contributors may be used to endorse or promote
-#    products derived from this software without specific prior written
-#    permission.
+# http://www.apache.org/licenses/LICENSE-2.0
 #
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
-# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
-# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
-# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
-# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
-# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
-# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
-# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-# POSSIBILITY OF SUCH DAMAGE.
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+# License for the specific language governing permissions and limitations under
+# the License.
 #
-############################################################################
+# ##############################################################################
 
 include $(wildcard lte/*/Make.defs)
diff --git a/lte/Makefile b/lte/Makefile
index 79ab0d8fbba..4fe43e7e942 100644
--- a/lte/Makefile
+++ b/lte/Makefile
@@ -1,37 +1,24 @@
 ############################################################################
 # apps/lte/Makefile
 #
-#   Copyright 2021 Sony Semiconductor Solutions Corporation
+# SPDX-License-Identifier: Apache-2.0
 #
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
+# Licensed to the Apache Software Foundation (ASF) under one or more contributor
+# license agreements.  See the NOTICE file distributed with this work for
+# additional information regarding copyright ownership.  The ASF licenses this
+# file to you under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License.  You may obtain a copy of
+# the License at
 #
-# 1. Redistributions of source code must retain the above copyright
-#    notice, this list of conditions and the following disclaimer.
-# 2. Redistributions in binary form must reproduce the above copyright
-#    notice, this list of conditions and the following disclaimer in
-#    the documentation and/or other materials provided with the
-#    distribution.
-# 3. Neither the name of Sony Semiconductor Solutions Corporation nor
-#    the names of its contributors may be used to endorse or promote
-#    products derived from this software without specific prior written
-#    permission.
+# http://www.apache.org/licenses/LICENSE-2.0
 #
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
-# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
-# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
-# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
-# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
-# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
-# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
-# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-# POSSIBILITY OF SUCH DAMAGE.
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+# License for the specific language governing permissions and limitations under
+# the License.
 #
-############################################################################
+# ##############################################################################
 
 MENUDESC = "LTE Libraries and NSH Add-Ons"
 
diff --git a/lte/alt1250/CMakeLists.txt b/lte/alt1250/CMakeLists.txt
index 9ed2f85ec36..c54f8e1e072 100644
--- a/lte/alt1250/CMakeLists.txt
+++ b/lte/alt1250/CMakeLists.txt
@@ -1,6 +1,8 @@
 # ##############################################################################
 # apps/lte/alt1250/CMakeLists.txt
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more contributor
 # license agreements.  See the NOTICE file distributed with this work for
 # additional information regarding copyright ownership.  The ASF licenses this
diff --git a/lte/alt1250/Make.defs b/lte/alt1250/Make.defs
index e5b7a3f9298..4b0fbab09f9 100644
--- a/lte/alt1250/Make.defs
+++ b/lte/alt1250/Make.defs
@@ -1,6 +1,8 @@
 ############################################################################
 # apps/lte/alt1250/Make.defs
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
 # this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/Makefile b/lte/alt1250/Makefile
index 138b2bed4b5..7f1ee1e2c24 100644
--- a/lte/alt1250/Makefile
+++ b/lte/alt1250/Makefile
@@ -1,6 +1,8 @@
 ############################################################################
 # apps/lte/alt1250/Makefile
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
 # this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/alt1250_atcmd.c b/lte/alt1250/alt1250_atcmd.c
index bdd7e285351..2b45585181b 100644
--- a/lte/alt1250/alt1250_atcmd.c
+++ b/lte/alt1250/alt1250_atcmd.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/alt1250_atcmd.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/alt1250_atcmd.h b/lte/alt1250/alt1250_atcmd.h
index d732a331384..4a9e275e636 100644
--- a/lte/alt1250/alt1250_atcmd.h
+++ b/lte/alt1250/alt1250_atcmd.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/alt1250_atcmd.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/alt1250_container.c b/lte/alt1250/alt1250_container.c
index 5c285011023..21ec1b31a29 100644
--- a/lte/alt1250/alt1250_container.c
+++ b/lte/alt1250/alt1250_container.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/alt1250_container.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/alt1250_container.h b/lte/alt1250/alt1250_container.h
index 894ff5aa472..2e45e12ce95 100644
--- a/lte/alt1250/alt1250_container.h
+++ b/lte/alt1250/alt1250_container.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/alt1250_container.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/alt1250_daemon.h b/lte/alt1250/alt1250_daemon.h
index c385d23ce75..45d8a923b8c 100644
--- a/lte/alt1250/alt1250_daemon.h
+++ b/lte/alt1250/alt1250_daemon.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/alt1250_daemon.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/alt1250_dbg.h b/lte/alt1250/alt1250_dbg.h
index edffed181cb..82b9bb27af6 100644
--- a/lte/alt1250/alt1250_dbg.h
+++ b/lte/alt1250/alt1250_dbg.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/alt1250_dbg.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/alt1250_devevent.c b/lte/alt1250/alt1250_devevent.c
index f58fe71708a..cdd2da524d4 100644
--- a/lte/alt1250/alt1250_devevent.c
+++ b/lte/alt1250/alt1250_devevent.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/alt1250_devevent.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/alt1250_devevent.h b/lte/alt1250/alt1250_devevent.h
index 03667fe0bcc..c4e27aa229c 100644
--- a/lte/alt1250/alt1250_devevent.h
+++ b/lte/alt1250/alt1250_devevent.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/alt1250_devevent.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/alt1250_devif.c b/lte/alt1250/alt1250_devif.c
index d58f3c75ffc..a742938fbf7 100644
--- a/lte/alt1250/alt1250_devif.c
+++ b/lte/alt1250/alt1250_devif.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/alt1250_devif.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/alt1250_devif.h b/lte/alt1250/alt1250_devif.h
index 5a01b647df7..c537754df19 100644
--- a/lte/alt1250/alt1250_devif.h
+++ b/lte/alt1250/alt1250_devif.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/alt1250_devif.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/alt1250_main.c b/lte/alt1250/alt1250_main.c
index d78adacc402..db40a6bf92c 100644
--- a/lte/alt1250/alt1250_main.c
+++ b/lte/alt1250/alt1250_main.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/alt1250_main.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/alt1250_netdev.c b/lte/alt1250/alt1250_netdev.c
index 8e40afd92b0..f0e8719fa7f 100644
--- a/lte/alt1250/alt1250_netdev.c
+++ b/lte/alt1250/alt1250_netdev.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/alt1250_netdev.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/alt1250_netdev.h b/lte/alt1250/alt1250_netdev.h
index a6931e37e7c..3d9c67f4295 100644
--- a/lte/alt1250/alt1250_netdev.h
+++ b/lte/alt1250/alt1250_netdev.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/alt1250_netdev.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/alt1250_postproc.h b/lte/alt1250/alt1250_postproc.h
index 25cd32a2e05..4e4b819fe11 100644
--- a/lte/alt1250/alt1250_postproc.h
+++ b/lte/alt1250/alt1250_postproc.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/alt1250_postproc.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/alt1250_reset_seq.c b/lte/alt1250/alt1250_reset_seq.c
index 3dc836803c5..f6080887c49 100644
--- a/lte/alt1250/alt1250_reset_seq.c
+++ b/lte/alt1250/alt1250_reset_seq.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/alt1250_reset_seq.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/alt1250_reset_seq.h b/lte/alt1250/alt1250_reset_seq.h
index 720a948adba..d5769522fd3 100644
--- a/lte/alt1250/alt1250_reset_seq.h
+++ b/lte/alt1250/alt1250_reset_seq.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/alt1250_reset_seq.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/alt1250_select.c b/lte/alt1250/alt1250_select.c
index e608e3532cf..dd44d38f243 100644
--- a/lte/alt1250/alt1250_select.c
+++ b/lte/alt1250/alt1250_select.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/alt1250_select.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/alt1250_select.h b/lte/alt1250/alt1250_select.h
index 4336e5f66a8..c386255343a 100644
--- a/lte/alt1250/alt1250_select.h
+++ b/lte/alt1250/alt1250_select.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/alt1250_select.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/alt1250_socket.c b/lte/alt1250/alt1250_socket.c
index 94af4bff5a4..d6eccf7104a 100644
--- a/lte/alt1250/alt1250_socket.c
+++ b/lte/alt1250/alt1250_socket.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/alt1250_socket.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/alt1250_socket.h b/lte/alt1250/alt1250_socket.h
index 64409e96c98..77b8286ae40 100644
--- a/lte/alt1250/alt1250_socket.h
+++ b/lte/alt1250/alt1250_socket.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/alt1250_socket.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/alt1250_usockevent.c b/lte/alt1250/alt1250_usockevent.c
index 9c4b637a5aa..5bc76555bd7 100644
--- a/lte/alt1250/alt1250_usockevent.c
+++ b/lte/alt1250/alt1250_usockevent.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/alt1250_usockevent.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/alt1250_usockevent.h b/lte/alt1250/alt1250_usockevent.h
index 6309ee85bb8..922f0b3a436 100644
--- a/lte/alt1250/alt1250_usockevent.h
+++ b/lte/alt1250/alt1250_usockevent.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/alt1250_usockevent.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/alt1250_usockif.c b/lte/alt1250/alt1250_usockif.c
index f85d05a6186..ec188775ceb 100644
--- a/lte/alt1250/alt1250_usockif.c
+++ b/lte/alt1250/alt1250_usockif.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/alt1250_usockif.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/alt1250_usockif.h b/lte/alt1250/alt1250_usockif.h
index df33f4cc73d..2ffcc02e46a 100644
--- a/lte/alt1250/alt1250_usockif.h
+++ b/lte/alt1250/alt1250_usockif.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/alt1250_usockif.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/alt1250_util.c b/lte/alt1250/alt1250_util.c
index 9346a6f4214..75fc00a3d33 100644
--- a/lte/alt1250/alt1250_util.c
+++ b/lte/alt1250/alt1250_util.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/alt1250_util.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/alt1250_util.h b/lte/alt1250/alt1250_util.h
index 85be0c992e1..ac60e05aa5c 100644
--- a/lte/alt1250/alt1250_util.h
+++ b/lte/alt1250/alt1250_util.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/alt1250_util.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/callback_handlers/alt1250_evt.c b/lte/alt1250/callback_handlers/alt1250_evt.c
index 73bf1a840c2..59cfe0bed95 100644
--- a/lte/alt1250/callback_handlers/alt1250_evt.c
+++ b/lte/alt1250/callback_handlers/alt1250_evt.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/callback_handlers/alt1250_evt.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/callback_handlers/alt1250_evt.h b/lte/alt1250/callback_handlers/alt1250_evt.h
index b87a4fcc884..9df097fe83b 100644
--- a/lte/alt1250/callback_handlers/alt1250_evt.h
+++ b/lte/alt1250/callback_handlers/alt1250_evt.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/callback_handlers/alt1250_evt.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/usock_handlers/alt1250_accepthdlr.c b/lte/alt1250/usock_handlers/alt1250_accepthdlr.c
index 9b2bf1d526d..4151425d802 100644
--- a/lte/alt1250/usock_handlers/alt1250_accepthdlr.c
+++ b/lte/alt1250/usock_handlers/alt1250_accepthdlr.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/usock_handlers/alt1250_accepthdlr.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/usock_handlers/alt1250_bindhdlr.c b/lte/alt1250/usock_handlers/alt1250_bindhdlr.c
index b79ea10cb65..85a12b0ee34 100644
--- a/lte/alt1250/usock_handlers/alt1250_bindhdlr.c
+++ b/lte/alt1250/usock_handlers/alt1250_bindhdlr.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/usock_handlers/alt1250_bindhdlr.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/usock_handlers/alt1250_closehdlr.c b/lte/alt1250/usock_handlers/alt1250_closehdlr.c
index c2c25dd1a48..6391046df67 100644
--- a/lte/alt1250/usock_handlers/alt1250_closehdlr.c
+++ b/lte/alt1250/usock_handlers/alt1250_closehdlr.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/usock_handlers/alt1250_closehdlr.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/usock_handlers/alt1250_connecthdlr.c b/lte/alt1250/usock_handlers/alt1250_connecthdlr.c
index 7df629b846f..cad728ab392 100644
--- a/lte/alt1250/usock_handlers/alt1250_connecthdlr.c
+++ b/lte/alt1250/usock_handlers/alt1250_connecthdlr.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/usock_handlers/alt1250_connecthdlr.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/usock_handlers/alt1250_fwupdate.h b/lte/alt1250/usock_handlers/alt1250_fwupdate.h
index 23b23266819..38281cdc01c 100644
--- a/lte/alt1250/usock_handlers/alt1250_fwupdate.h
+++ b/lte/alt1250/usock_handlers/alt1250_fwupdate.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/usock_handlers/alt1250_fwupdate.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/usock_handlers/alt1250_getpeernamehdlr.c b/lte/alt1250/usock_handlers/alt1250_getpeernamehdlr.c
index aa42593255d..5374b06c81e 100644
--- a/lte/alt1250/usock_handlers/alt1250_getpeernamehdlr.c
+++ b/lte/alt1250/usock_handlers/alt1250_getpeernamehdlr.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/usock_handlers/alt1250_getpeernamehdlr.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/usock_handlers/alt1250_getsocknamehdlr.c b/lte/alt1250/usock_handlers/alt1250_getsocknamehdlr.c
index b6df948874f..23350cf1ab2 100644
--- a/lte/alt1250/usock_handlers/alt1250_getsocknamehdlr.c
+++ b/lte/alt1250/usock_handlers/alt1250_getsocknamehdlr.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/usock_handlers/alt1250_getsocknamehdlr.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/usock_handlers/alt1250_getsockopthdlr.c b/lte/alt1250/usock_handlers/alt1250_getsockopthdlr.c
index 28174fce83f..2805cd57472 100644
--- a/lte/alt1250/usock_handlers/alt1250_getsockopthdlr.c
+++ b/lte/alt1250/usock_handlers/alt1250_getsockopthdlr.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/usock_handlers/alt1250_getsockopthdlr.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/usock_handlers/alt1250_ioctl_denyinetsock.c b/lte/alt1250/usock_handlers/alt1250_ioctl_denyinetsock.c
index 8de3ff1423c..d85ca7ac054 100644
--- a/lte/alt1250/usock_handlers/alt1250_ioctl_denyinetsock.c
+++ b/lte/alt1250/usock_handlers/alt1250_ioctl_denyinetsock.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/usock_handlers/alt1250_ioctl_denyinetsock.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/usock_handlers/alt1250_ioctl_event.c b/lte/alt1250/usock_handlers/alt1250_ioctl_event.c
index 913f456d4e7..cf7ee532aff 100644
--- a/lte/alt1250/usock_handlers/alt1250_ioctl_event.c
+++ b/lte/alt1250/usock_handlers/alt1250_ioctl_event.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/usock_handlers/alt1250_ioctl_event.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/usock_handlers/alt1250_ioctl_fwupdate.c b/lte/alt1250/usock_handlers/alt1250_ioctl_fwupdate.c
index 7fa67e29871..dfd6c41ae91 100644
--- a/lte/alt1250/usock_handlers/alt1250_ioctl_fwupdate.c
+++ b/lte/alt1250/usock_handlers/alt1250_ioctl_fwupdate.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/usock_handlers/alt1250_ioctl_fwupdate.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/usock_handlers/alt1250_ioctl_ifreq.c b/lte/alt1250/usock_handlers/alt1250_ioctl_ifreq.c
index 875361681b2..6a948c653ae 100644
--- a/lte/alt1250/usock_handlers/alt1250_ioctl_ifreq.c
+++ b/lte/alt1250/usock_handlers/alt1250_ioctl_ifreq.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/usock_handlers/alt1250_ioctl_ifreq.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/usock_handlers/alt1250_ioctl_ltecmd.c b/lte/alt1250/usock_handlers/alt1250_ioctl_ltecmd.c
index 82e211f6f62..889f9b41f2d 100644
--- a/lte/alt1250/usock_handlers/alt1250_ioctl_ltecmd.c
+++ b/lte/alt1250/usock_handlers/alt1250_ioctl_ltecmd.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/usock_handlers/alt1250_ioctl_ltecmd.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/usock_handlers/alt1250_ioctl_lwm2m.c b/lte/alt1250/usock_handlers/alt1250_ioctl_lwm2m.c
index ea82ad92b8f..e68704a8723 100644
--- a/lte/alt1250/usock_handlers/alt1250_ioctl_lwm2m.c
+++ b/lte/alt1250/usock_handlers/alt1250_ioctl_lwm2m.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/usock_handlers/alt1250_ioctl_lwm2m.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/usock_handlers/alt1250_ioctl_normal.c b/lte/alt1250/usock_handlers/alt1250_ioctl_normal.c
index 8c116833ae6..90b3a678f12 100644
--- a/lte/alt1250/usock_handlers/alt1250_ioctl_normal.c
+++ b/lte/alt1250/usock_handlers/alt1250_ioctl_normal.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/usock_handlers/alt1250_ioctl_normal.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/usock_handlers/alt1250_ioctl_other.c b/lte/alt1250/usock_handlers/alt1250_ioctl_other.c
index 5010c84d5b8..057553a5cd6 100644
--- a/lte/alt1250/usock_handlers/alt1250_ioctl_other.c
+++ b/lte/alt1250/usock_handlers/alt1250_ioctl_other.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/usock_handlers/alt1250_ioctl_other.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/usock_handlers/alt1250_ioctl_power.c b/lte/alt1250/usock_handlers/alt1250_ioctl_power.c
index 21e62462ddf..c910060c168 100644
--- a/lte/alt1250/usock_handlers/alt1250_ioctl_power.c
+++ b/lte/alt1250/usock_handlers/alt1250_ioctl_power.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/usock_handlers/alt1250_ioctl_power.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/usock_handlers/alt1250_ioctl_subhdlr.h b/lte/alt1250/usock_handlers/alt1250_ioctl_subhdlr.h
index 6ce7a1b74e7..fcd3b00f8ee 100644
--- a/lte/alt1250/usock_handlers/alt1250_ioctl_subhdlr.h
+++ b/lte/alt1250/usock_handlers/alt1250_ioctl_subhdlr.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/usock_handlers/alt1250_ioctl_subhdlr.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/usock_handlers/alt1250_ioctlhdlr.c b/lte/alt1250/usock_handlers/alt1250_ioctlhdlr.c
index 568d199282d..43d638024e7 100644
--- a/lte/alt1250/usock_handlers/alt1250_ioctlhdlr.c
+++ b/lte/alt1250/usock_handlers/alt1250_ioctlhdlr.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/usock_handlers/alt1250_ioctlhdlr.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/usock_handlers/alt1250_listenhdlr.c b/lte/alt1250/usock_handlers/alt1250_listenhdlr.c
index a3c3bed263a..4c66beeafe3 100644
--- a/lte/alt1250/usock_handlers/alt1250_listenhdlr.c
+++ b/lte/alt1250/usock_handlers/alt1250_listenhdlr.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/usock_handlers/alt1250_listenhdlr.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/usock_handlers/alt1250_recvfromhdlr.c b/lte/alt1250/usock_handlers/alt1250_recvfromhdlr.c
index 906a0b9bb81..b2c45f1391b 100644
--- a/lte/alt1250/usock_handlers/alt1250_recvfromhdlr.c
+++ b/lte/alt1250/usock_handlers/alt1250_recvfromhdlr.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/usock_handlers/alt1250_recvfromhdlr.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/usock_handlers/alt1250_sendtohdlr.c b/lte/alt1250/usock_handlers/alt1250_sendtohdlr.c
index e47b26d9f5d..2894354f23c 100644
--- a/lte/alt1250/usock_handlers/alt1250_sendtohdlr.c
+++ b/lte/alt1250/usock_handlers/alt1250_sendtohdlr.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/usock_handlers/alt1250_sendtohdlr.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/usock_handlers/alt1250_setsockopthdlr.c b/lte/alt1250/usock_handlers/alt1250_setsockopthdlr.c
index f4c5106b116..247053bedf4 100644
--- a/lte/alt1250/usock_handlers/alt1250_setsockopthdlr.c
+++ b/lte/alt1250/usock_handlers/alt1250_setsockopthdlr.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/usock_handlers/alt1250_setsockopthdlr.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/usock_handlers/alt1250_shutdownhdlr.c b/lte/alt1250/usock_handlers/alt1250_shutdownhdlr.c
index 0c8a9765b00..30a507c52f3 100644
--- a/lte/alt1250/usock_handlers/alt1250_shutdownhdlr.c
+++ b/lte/alt1250/usock_handlers/alt1250_shutdownhdlr.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/usock_handlers/alt1250_shutdownhdlr.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/usock_handlers/alt1250_sms.c b/lte/alt1250/usock_handlers/alt1250_sms.c
index 610669cfc5e..5f70beff846 100644
--- a/lte/alt1250/usock_handlers/alt1250_sms.c
+++ b/lte/alt1250/usock_handlers/alt1250_sms.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/usock_handlers/alt1250_sms.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/usock_handlers/alt1250_sms.h b/lte/alt1250/usock_handlers/alt1250_sms.h
index 8f0707a80b8..11f9b4dce36 100644
--- a/lte/alt1250/usock_handlers/alt1250_sms.h
+++ b/lte/alt1250/usock_handlers/alt1250_sms.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/usock_handlers/alt1250_sms.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/usock_handlers/alt1250_sockethdlr.c b/lte/alt1250/usock_handlers/alt1250_sockethdlr.c
index 8d632187950..e6046f36e4c 100644
--- a/lte/alt1250/usock_handlers/alt1250_sockethdlr.c
+++ b/lte/alt1250/usock_handlers/alt1250_sockethdlr.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/usock_handlers/alt1250_sockethdlr.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/alt1250/usock_handlers/alt1250_usrsock_hdlr.h b/lte/alt1250/usock_handlers/alt1250_usrsock_hdlr.h
index 7bd85b2ae8e..5142389fc18 100644
--- a/lte/alt1250/usock_handlers/alt1250_usrsock_hdlr.h
+++ b/lte/alt1250/usock_handlers/alt1250_usrsock_hdlr.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/alt1250/usock_handlers/alt1250_usrsock_hdlr.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/lapi/CMakeLists.txt b/lte/lapi/CMakeLists.txt
index 53ea4de4a44..45c0d852d22 100644
--- a/lte/lapi/CMakeLists.txt
+++ b/lte/lapi/CMakeLists.txt
@@ -1,6 +1,8 @@
 # ##############################################################################
 # apps/lte/lapi/CMakeLists.txt
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more contributor
 # license agreements.  See the NOTICE file distributed with this work for
 # additional information regarding copyright ownership.  The ASF licenses this
diff --git a/lte/lapi/Make.defs b/lte/lapi/Make.defs
index 77996b20e17..9fd239fc243 100644
--- a/lte/lapi/Make.defs
+++ b/lte/lapi/Make.defs
@@ -1,6 +1,8 @@
 ############################################################################
 # apps/lte/lapi/Make.defs
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
 # this work for additional information regarding copyright ownership.  The
diff --git a/lte/lapi/Makefile b/lte/lapi/Makefile
index 55d9362f7cc..936206501f4 100644
--- a/lte/lapi/Makefile
+++ b/lte/lapi/Makefile
@@ -1,6 +1,8 @@
 ############################################################################
 # apps/lte/lapi/Makefile
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
 # this work for additional information regarding copyright ownership.  The
diff --git a/lte/lapi/src/Make.defs b/lte/lapi/src/Make.defs
index daa28436505..4a6816e8644 100644
--- a/lte/lapi/src/Make.defs
+++ b/lte/lapi/src/Make.defs
@@ -1,6 +1,8 @@
 ############################################################################
 # apps/lte/lapi/src/Make.defs
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
 # this work for additional information regarding copyright ownership.  The
diff --git a/lte/lapi/src/lapi_dbg.h b/lte/lapi/src/lapi_dbg.h
index 092e13f88d1..403847653af 100644
--- a/lte/lapi/src/lapi_dbg.h
+++ b/lte/lapi/src/lapi_dbg.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/lapi/src/lapi_dbg.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/lapi/src/lapi_evt.c b/lte/lapi/src/lapi_evt.c
index cc047584b17..3826a5073bc 100644
--- a/lte/lapi/src/lapi_evt.c
+++ b/lte/lapi/src/lapi_evt.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/lapi/src/lapi_evt.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/lapi/src/lapi_firmware.c b/lte/lapi/src/lapi_firmware.c
index a02113f0a53..203c4afb7ff 100644
--- a/lte/lapi/src/lapi_firmware.c
+++ b/lte/lapi/src/lapi_firmware.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/lapi/src/lapi_firmware.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/lapi/src/lapi_log.c b/lte/lapi/src/lapi_log.c
index 547b1b1fd95..1ddf2e4f2c8 100644
--- a/lte/lapi/src/lapi_log.c
+++ b/lte/lapi/src/lapi_log.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/lapi/src/lapi_log.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/lapi/src/lapi_lwm2m.c b/lte/lapi/src/lapi_lwm2m.c
index 8542f680763..47a5d9f59c5 100644
--- a/lte/lapi/src/lapi_lwm2m.c
+++ b/lte/lapi/src/lapi_lwm2m.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/lapi/src/lapi_lwm2m.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/lapi/src/lapi_net.c b/lte/lapi/src/lapi_net.c
index e68583b3523..9eaae54afb4 100644
--- a/lte/lapi/src/lapi_net.c
+++ b/lte/lapi/src/lapi_net.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/lapi/src/lapi_net.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/lapi/src/lapi_other.c b/lte/lapi/src/lapi_other.c
index 4897bed85b0..b7d6a2b64b6 100644
--- a/lte/lapi/src/lapi_other.c
+++ b/lte/lapi/src/lapi_other.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/lapi/src/lapi_other.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/lapi/src/lapi_pdn.c b/lte/lapi/src/lapi_pdn.c
index 5fc0451b0c4..def048d70fe 100644
--- a/lte/lapi/src/lapi_pdn.c
+++ b/lte/lapi/src/lapi_pdn.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/lapi/src/lapi_pdn.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/lapi/src/lapi_pin.c b/lte/lapi/src/lapi_pin.c
index 31135b7fa56..0a0496fa7c4 100644
--- a/lte/lapi/src/lapi_pin.c
+++ b/lte/lapi/src/lapi_pin.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/lapi/src/lapi_pin.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/lapi/src/lapi_power.c b/lte/lapi/src/lapi_power.c
index c37e45474fe..31ae86df08b 100644
--- a/lte/lapi/src/lapi_power.c
+++ b/lte/lapi/src/lapi_power.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/lapi/src/lapi_power.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/lapi/src/lapi_psave.c b/lte/lapi/src/lapi_psave.c
index 10defd44c30..8bc3aab0281 100644
--- a/lte/lapi/src/lapi_psave.c
+++ b/lte/lapi/src/lapi_psave.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/lapi/src/lapi_psave.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/lapi/src/lapi_radio.c b/lte/lapi/src/lapi_radio.c
index 0ba12362f62..09ce0aa0585 100644
--- a/lte/lapi/src/lapi_radio.c
+++ b/lte/lapi/src/lapi_radio.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/lapi/src/lapi_radio.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/lte/lapi/src/lapi_sim.c b/lte/lapi/src/lapi_sim.c
index dcf7efc1bc3..7de40441767 100644
--- a/lte/lapi/src/lapi_sim.c
+++ b/lte/lapi/src/lapi_sim.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * apps/lte/lapi/src/lapi_sim.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The