hi guys !!

my SSim was working perfectly , after i went on vacation and tried the card there (which worked ) i came back home (austria ) and now my SSim works with other providers(from friends) but not with mine (it worked perfect before my vacation)!!I also tried the card of my wife (same provider ) - NO SIM !!!

What can i try guys ! !!! thanks for any help!!! i am a bit desperate !!!