I just got my iPhone 13 Pro Max today. I was using the iPhone 12 Mini and I backup everything to iCloud. After I got the iPhone 13 Pro Max, I did a restore from iCloud. Every works well except for there is a prompt for a software update to IOS15. I downloaded and tried to Install Now but there is a popup saying my phone is not connected to the internet so it cannot verify the update file.
I checked my iPhone 13 Pro Max software version, it shows at 15.0. So is it due to the restore from the iPhone 12 Mini? I had also updated to the iOS 15.0 on my iPhone 12 Mini. I did a reset of network settings, hard reset as well as another factory reset but still it shows as iOS update cannot be verified as my phone is not connected to internet. But I can surf net, whatsapp, watch youtube, etc.
If anyone has any experience, hope you can share how to solve the problem. Thanks in advance