GT-S5282 no network problem

hi,
When it goes to standby mode and after unlock screen lock it shows this sign instead of signals.
and when i turn on this cell with simcard it run simcard perfect but when it goes to standby then this problem occure
http://i1372.photobucket.com/albums/...psc2e8d5ef.jpg
and after appear this sign i cant make a call and if try to make call then shows "no network registered"
i flashed this cell
wrote efs and also wrote imei but no success.
http://i1372.photobucket.com/albums/...psa167e222.jpg

http://i1372.photobucket.com/albums/...ps1c699bd8.jpg

it's software info:
PRODUCT_UNKNOWN
PDA_XXAMEA
PHONE_XXAME3
CSC_OJVAME1

HOW I CAN SOLVE IT ANYBODY HAVE SOLUTION.

I think nobody have any solution for this............?