It happened it's own. I removed Sim for a few day it was good. I realized when I put my sim back to use. I don't have any efs back up of this rom because I wiped everything to flash the stock rom. Stock rom also didn't help. Still same problem. But I have one efs back up on my SD card from my previous rom Blekota hote4. I will try flashing from recovery and let you know. Thanks for your help.usually when the ROM is installed, in the SDCard a backup of the EFS is created named as efs.tar.gz... try flashing it via recovery
alternatively, flash the stock 4.3 ROM via Odin, that will restore the EFS
by the way, did you perform any specific steps leading to the situation or did it happen on its own?