iPhone 6 new to iPhone need to set up start using App Store need to install update to 15.1

The last and final update for the iPhone 6 was iOS 12.5.7. No more updates are available for the iPhone 6.

The iPhone 6 cannot install iOS 13, 14, 15, 16 or 17.

You would need an iPhone 7 to run iOS 15.

You would need an iPhone 8 to run iOS 16.

You would need an iPhone XR or higher model to run iOS 17.

Apple introduced the iPhone 6 in September 2014 – nearly 10 years ago. At that time, it ran iOS 8.

iOS 12 is the end of the line for the iPhone 6. Many third-party apps now require later versions of iOS than that.