I have tried two separate activation processes with two separate carriers and although my phone is unlocked and acceptable by both, it will not work for either. Please tell me why that is?
iPhone 8, iOS 15
See -> If you can't activate your iPhone or iPad (Wi-Fi + Cellular)
If you can't activate your iPhone or iPad (Wi-Fi + Cellular) - Apple Support
See -> If you can't activate your iPhone or iPad (Wi-Fi + Cellular)
If you can't activate your iPhone or iPad (Wi-Fi + Cellular) - Apple Support
Iphone8 will not allow activation to either carrier that I have tried
