How can I update my iPhone 7

Go to Settings ➜ General ➜ Software Update.

The iPhone 7 can be updated to iOS 15.7.4.

click here ➜ Update your iPhone or iPad - Apple Support

click here ➜ About the security content of iOS 15.7.4 and iPadOS 15.7.4 - Apple Support

An iPhone 6s, iPhone 7, iPhone 7 Plus, or iPhone SE 1 isn't capable of 16 or above; they require an A11 or better CPU. To install 15.7.5, use a computer or the Software Update function in Settings.

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