Help how to fix : Not register on Network

[portokalli]

hello, i have similar problem with my samsung s3,

i receive with android 4.1.1 coustumized firmware the sim card work ok, after update with flash to official rom 4.3 , know the sim card but if i make an call show , not register on network.

how can help me , whot i can do on my phone?

thanks

regards
Iri

 

[Rukbat]

That's a carrier-type problem. Take it to your carrier and ask for help. They may have to reflash it.

 

[dynomot]

I'm sorry to be the bearer of bad news, but unless you have made a backup of your EFS folder at anytime (you'd need to have been rooted and would remember doing so In sure) Then your phone is pretty much useless, your EFS folder may have become corrupted.

Seeing how you've had a custom ROM on it I doubt whether you could get a warranty repair/replacement.

I'm sorry to tell you this, but I couldn't leave your post without an answer.

To check for sure type *#06# into the dialler, it should bring up your phone's IMEI (serial number) if it comes up null/null, it is as I said, broken.