recently i flashed a custom rom and then i found out that i had to backup my efs folder.i was nt getting network in that custom rom and with *#06# i was nt getting anything.so i decided to use my nandroid backup.after restoring i have my iemi number shown typing the*#06# keyword and imei identical to the one at back of the batterl slot.sim cards fully functional .my phone is s duos (dual sim). but if i check my efs folder its empty.so my question is do i have efs data lost.??if lost then how am i able to make calls?if nt y is my efs folder empty?
and my friend has given me his s duos efs files can i use it in my phone.is there any way to fix this??