hi every one, i have bought 2 i phone 4s and there both not on my network (o2) keeps telling me SIM Not Valid is there any help on how i can get one of my phones working or how to unlock this its getting frustrating now thank you
iPhone 4S
Posted on Feb 14, 2016 7:01 AM
Q: unlocking iphone 4s
How to unlock your iPhone for use with another carrier - Apple Support