I have got a problem with my i9300. I updated from 4.1.2 to 4.3 and now I have no network connection on my phone.
It shows me "Data is not registered" when I want to call to somebody.
The weird thing is that I didn't lose my IMEI - it didn't change.
I flashed a tons of ROMs (officials) , 4.0.4, 4.1.2, 4.3 Nothing helped me.
What can I do? Please help me.