1. I tried to use Ariza Patch, yet it didn't work.
2. The IMEI's number is not changed to 0000 or anything, it's just a 15-digit number and has a '/01' at the end of it.
3. The signal is full.
How could this be fixed? Is there anyway to fix this? It would be very much appreciated. Thank you!
Alright, so first of all, my Samsung Galaxy SIII got some damage, and then we brought it to a repair shop. They changed the motherboard, and then returned it to us and it was working fine. The only thing is, the Android version is still on 4.0.4, and whenever I boot the phone, a T-Mobile bootloading screen appears, and it annoys the hell out of me. So, I flashed Android 4.3 Jellybean using Odin. Yet, after the update finishes, the phone won't make a text or a call. It always says 'Not Registered On Network'. So here are some notes of the phone's status...