I have problems sometimes about gsm network registration. AT+CREG? command returns +CREG: 0,2 that means “not registered, ME currently searching for a new operator”.
But there is enough signal strength which is about +CSQ: 11,99. My open AT application resets the modem with AT+CFUN=1 on every 2 minutes if network registration fails. But it can not solve the problem. When modem is reset, it still can not register. I even powered off the modem, then powered on again but it didnt help.
How can i get more information about this behaviour?