Quattro with Emergency Calls Only, Please help !

Hello All,
I have a Samsung Galaxy Grand Quattro (1 year old), which suddenly started showing "Emergency Calls Only" message with both SIM slots. No matter what SIM is used new or old or any provider it simply dont connect to netwrok. Other symptions are:

• Singal strength is good.


• Shows all available networks in manual search.


• IMEI is valid and not stolen or spoofed. imei info shows everything alright.


• In status shows Network = Unknown, Service State = Out of service

Things I have tried:

• Factory reset, hard reset from recovery, data wipe etc.


• CWM with custom roms like Trans-K and TransWin


• Rooted and changed CSC type from INS to INU


• Installed latest official firmware from SamMobile

But nothing helped till now. Please suggest what to do now. Service provide says problem is with your phone and SIM is perfectly fine works with other phones.

Thanks,

Help! Pls. Samsung grand quattro doesnt boot

HELP! I rooted before without installing cwm recovery. Now I think it is not booting because of lot of tweaking. It is stuck on "Samsung" logo whenever I start it. Now I install CWM recovery. And try to restore and reboot. Still stuck in it. I have already wipe all. Still stuck. PLease help can't afford to buy another phone. :(