iPhone 3GS can't use 3G Sims?

Adam

New member
I have a very weird problem...
I have an iPhone 3GS on O2, which is currently using a 2G Sim.
When I insert a 3G Sim, it comes up Different Sim Detected, Please connect to iTunes.
When I connect it to iTunes, it will try to back up, but fail continuously.
Could someone please tell me how ti fix this problem?

Note that the 3G Sim card I tried to insert was also on O2.
 
Back
Top