No Sim Card Detected - AT&T Galaxy S3

[Justin Emerich]

I have a galaxy s3, and it has been working fine for months. Just recently, it has been losing connection from cellular, and then a window pops up saying no Sim card detected, and phone needs to restart. I haven't touched the Sim card since I got the phone, the only time I open the back is to change the battery. Any help?

Posted via the Android Central App

 

[Rukbat]

Bring the phone into your local AT&T store. They'll probably burn a new SIM card for you. If that doesn't work, they'll fill out a Device Support Center sheet and tell you where the DSC is (it could be in the rear of your local store). They should be able to fix it up.

Just in case they decide to replace the phone, make sure everything internal is backed up.