How to update my iPhone 6s Plus?
Help me update my phone
[Re-Titled by Moderator]
iPhone 6s Plus, iOS 12
The iPhone 6s can update to iOS 15.7.7
However, if you're still on iOS 12, the chances are high that you have an iPhone 6, and not an 6S. The iPhone 6 can not update further then iOS 12.5.7 due to hardware limitations, this iPhone is too old to update any further