Got a new iPhone 11. Already a sim only customer so an upgrade via mobiles.co.uk. Transferred every over ok, however when I to log onto my O2 I get an error msg. This number is associated with another device. Do I have to call again?
I have no affiliation whatsoever with O2 or any subsidiary companies. Comments posted are entirely of my own opinion. This is not Customer Service so we are unable to help with account specific issues.