At the beginning I will make changes to the new SIM card, and if it does not have to check the handset to see if there is a problem or a problem with good will to tag.
Initially I want to change the SIM card before, and if it does not detect the phone to see if there is a problem or not. To identify problems with the DTAC.
I'll change the basic new SIM card first and if still not to check the phone to see if there's a problem or not. Along with will issue to the nationwide.