My phone is not recognizing my sim
My iPhone 6 is not reading my new sim. I put this sim in an iPhone 5s and it is working. Additionally, I know that my iPhone 6 is unlocked because I have used it in other countries using their SIM cards without any problem. The phone is reading an old sim I have from the UK but not my new sim. I have tried restarting my phone, a hard reset, resetting network settings and resetting factory settings. What else can I do? It doesn’t seem to be a hardware issue as it is reading the old sim?