ERROR - MOBILE AND RTLSDR

[tbaganha]

Hello.

I am not able to catch numbers with "Sansumg S7" and also with "RTL-SDR-2832U".

The terminal works normally, but does not capture any number, see:

- MOBILE:
──(kali㉿kali)-[~/Modmobmap]
└─$ sudo python3 modmobmap.py -s /usr/lib/android-sdk/ -a /dev/ttyACM0 -n 72406
=> Manual MCC/MNC processing...
Found 1 operator(s)
{'72406': '72406'}
[+] Unregistered from current PLMN
=> Changing MCC/MNC for: 72406
=> Changing network type for 3G only
=> Changing network type for 2G only
=> Switching back to auto-mode

- RTL-SDR:
──(kali㉿kali)-[~/Modmobmap]
└─$ sudo python3 modmobmap.py -m grgsm -b GSM-R,GSM900 -g rtlsdr
=> Switching to GSM-R band
Try scan CCCH on 955-1023 arfcn`s:
Scanning: 0.00% done..

Can you help me?

Thanks.