How to update iOS version 15
How to update iOS new version
iPhone 6 Plus, iOS 12
How to update iOS new version
iPhone 6 Plus, iOS 12
Update iOS new version
Update iOS new version
Update
Your iPhone 6 Plus cannot update past iOS 12.5.5.
The hardware is not compatible, it only has 1 GB RAM (needs at least 2 GB)
It's time to upgrade your iPhone to a newer model.
How to update iOS version 15