iPhone 15 says it's unlocked but it's still locked to one network?
I have never seen this issue before. It shows no SIM restrictions and an IMEI check also shows that it's unlocked. Yet only EE (UK) SIM cards work but I've used Esims whilst travelling which have worked fine, but physical Sims don't work at all unless they're under the EE network.
What on earth could the issue be? It's so strange