I’m trying to interface SIM800L core module (Image attached) with Arduino Nano.
SIM800L is powered separately by Vcc 3.7V @1A.
Problem is SIM800L not registering to any network; I’m from Qatar, here there is only two networks.
Here is some results during configuration of SIM800L.
Without SIM card, signal quality command AT+CSQ → +CSQ: 15,0
With SIM card, AT+CSQ → +CSQ: 0,0
And network registration command, AT+CREG=? → +CREG: (0-2)
What is the problem?
Thanks in advance.