I put the sim card from the old phone into the new phone and it says there is no sim phone card. please help
why is the sim card not working in my new phone? Both phones are identical.
iPhone 12, iOS 15
See this Apple articles below:
How to unlock your iPhone for use with a different carrier
https://support.apple.com/en-us/HT201328
If you can't activate your iPhone
https://support.apple.com/en-us/HT201407
If you see 'invalid SIM' or 'no SIM' on your iPhone or iPad