I have a dual SIM Mtk6589T phone ( ThL W200 ) with a custom ROM.
Yesterday my IMEI numbers became not valid.
So I can't use my SIM card for SMS, MMS, 2g/3g network and calls.
I tryed two methos to restore them.
I tryed the "AT+EGMR=1,7,"first IMEI number" command on engineer mode (engineer mode/connectivity/CDS information/radio information/phone 1), and a toast notification says "AT command is failed to send"
and the "echo 'AT+EGMR=1,7,"first IMEI number">dev/pttycmd1'" on terminal, and nothing changed
Help me please
What should I do?