SIM800l Connection Status problem

Official Hardware Retired GSM Shield
1

Hi there
I use Arduino UNO and Sim800l.

#include <Sim800L.h>
#include <SoftwareSerial.h>

I want to know my connection status.
There is the command "getFunctionalityMode()" or AT command "AT+CREG?" but none of both works! What's the problem? How can I solve this and read the connection status?

I will be more appreciated if your suggestion contains a code example

2

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