I tried unlocking my iPhone but I got an email saying The IMEI - xxxxxxxxxxxxxxx has not been used on our network with the MPN
provided, so it will not be possible to unlatch it. Will I still be able to unlock my device and if so how?
[mod edit: please do not post IMEI numbers on the public board. Thanks!]
You just need to get an O2 SIM and use it on O2 for a few days.
Track usage, upgrade and get support with the My O2 appDownload My O2