Hi,
I have bought a factory 'unlocked' GD55, however when inserting my O2 pay as SIM is shows "unregsitered SIM" I have tried all the other provider's SIM's and it recognises the Network but will not recieve or send calls. This is except for an Orange SIM which works fine.
Any ideas of what is happening, any help would be greatly appreciated as its my wife's birthday present
Thanks