I want to update my phone v

"phone V"? As in iPhone 5? The highest version of iOS available for the iPhone 5 (assorted versions) is iOS 10.3.4. The highest version of iOS available for the iPhone 5c is iOS 10.3.3.

If you are asking about the iPhone 7 in your tag line, you can update it as far as the latest release of iOS 15 – but no higher. It cannot run iOS 16 or later.

I want to update my phone

This is not possible, if you have an iPhone 7.

You will need an iPhone 8 to run iOS 16.

You will need an iPhone XS or higher model to run iOS 17.