missus has just upgraded and she had a 4s which we decided to sell on
this phone used to be unlocked and about 15 months ago she got it exchanged at an apple store
its been updated to ios 8 and I sold it yesterday presuming it was still unlocked im now getting this message
the Sim card that you currently have installed in this iPhone is from a carrier that is not supported under the activation policy that is currently assigned by the activation server.
now im a bit stumped as I thought its unlocked but now im not sure what network its locked too
3 and 02 don't work
looking at this thread it seems to be a common problem [Only registered and activated users can see links. ]