Have a new iPhone. Swapped the SIM but the details in my BT account are stuck on the old phone details.
Tried putting the SIM into a really old Nokia. Get settings updates etc. Then put it back into the iPhone. Get a message saying 'Your SIM is now active' but still my account has the old iPhone / IMEI details.
Does this info take a while to catch up?
Makes you wonder why they bother if they know it is inaccurate. You’d have thought it was needed so they know what equipment is accessing their network.