What about IPhone 7 Plus?

Abusaleh66 Said:

"What about IPhone 7 Plus? A new update has been released for IPhone 8 and up. what about IPhone 7 Plus? is it facing same problem? regards"

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Updating an iPhone 7 Past iOS15:

A. You can't.  The iPhone 7 will only install to iOS 15.7.8. See here: Update your iPhone or iPad Software if you're Experiencing Issues with Location, Date, and Time - Apple Support. And, for the note, even if you could update, only the latest compatible version will install.

So, what to Try:

B. Update Using a Computer:

Have a Computer Handy? If so, try using a computer to update. Use my User Tip Update your iPhone Using a Computer - User Tip. If any updates are availabe, they will install, sure enough

Not a problem. It’s just an old phone. It was released in September 2016. The old hardware cannot support the new updates.