I want my iphone unlocked

[PeterTR]

I have bought a new iphone, and am using my old business sim - so want my old iphone unlocking to use as a spare  - how do I get this done?

[pgn · Accepted solution]

Most phones sold by O2 after 2008 are already unlocked, @PeterTR - but guide here if your old phone is of an earlier vintage: Guide: Unlocking an O2 phone to use a different SIM card 

Good luck!