I`m having a weird issue. After updating my S3 i9300 with the stock rom 4.3 from sammobile, i had the common no service isuue. Never lost imei or serial number. Installed the Patched_BUUGMJ3_modem.zip and Patched_XXUFMJ9_kernel.zip. That solved the problem.
I didn`t like jellybean 4.3 so I tried back 4.1.2 but no service appeared again. So i returned to 4.3 patched again and everything went ok again.
After that i tried sentinel v6 rom. Impressive rom. Nice , fast performance and long battery life. Never lost service
But when i try other modem, from odin or Philz i get "no service".
Imei number and serial number always remained OK.
Can anyone ahelp me?