iPhone 7 not updating to iOS 16

dattatray178 wrote:

cant install my iPhone 7 ios 16

That is correct.

You cannot install iOS 16 on an iPhone 7. You will never be able to install iOS 16 on an iPhone 7. If you need to run some version of iOS more recent than iOS 15, you will need to buy a new iPhone.

Probably you are seeking for an iOS update becuase --> New Apps that require higher iOS versions than your device can be updated to... - Apple Community