Unlock your iPad that is locked to O2 UK.
Service supports any model as long as the iPad is not reported lost / stolen or part of an unpaid bill.
Simply enter your iPad’s IMEI and allow the allocated time.
When your iPad is ready to be unlocked simply put the sim card in you would like to use and connect it to iTunes to re activate your iPad.
To find your IMEI number go to your iPad’s Settings – General – About.