[HELP] my Pocket Neo GT-S5312 null IMEI & no network

Hello..

I can any problem with my samsung galaxy pocket neo GT-S5312.

I'm so confused :(

so, my device problem is null IMEI on SIM 2..
and then, always no network or signal..
I already flashing firmware , but still no signal..
Can u help me?? :(
I hope so
Sorry if my bad speaking, because i'm indonesian..

Thank's bro