You should contact O2 about the unlock code, they will usually give it to you as long as your account is in good standing balance. Otherwise there are many services online (on eBay) that can also help you.
Verizon iPhone 5 32GB black unlocked
PagePlus iPhone 5 16GB black unlocked
T-Mobile Samsung Galaxy Note 2 16GB Titanium
T-Mobile Samsung Galaxy Note 2 16GB Titanium (2nd)
T-Mobile Samsung Galaxy S3 white (cracked)
AT&T iPhone 4S 16GB white (cracked)
PagePlus iPhone 4 16GB
MetroPCS iPhone 4 16GB (cracked, non-usable)
AT&T iPad 3 16GB LTE (somewhere in the house)
iPad mini 32GB white
iPod touch 5 32GB blue
iPod touch 4 8GB white (missing display, non-usable)
Blackberry Bold 9700 AT&T
Bookmarks