iPhone SE from 2017 on contract
want to know whether it’s unlocked or not ? I’m guessing the only way to know for sure is by putting a SIM card into the phone from another network?
Just phoned up and was told providers cannot lock iPhone. I’ll try a different network SIM card and see how I get on
Have a look at How do I unlock my mobile phone or tablet? If it is locked, BT will unlock for free if you took it out in 2017, handset terms are 24 months at most.