Hey guys !

So there's a problem with my iphone 4 and my gevey ultra sim.
when i try to activate it ( restart phone, enter pin , call 112 for 2 sec)
then at the calling 112 part it activates the sim and i get to use 3G aswell for a small period and then it says no service again

It doesn't change when i try airplane mode etc.. which worked fine when i was using ios5


any help ?