Give mi ios 16 update on my iPhone 7 plus

These are the iOS options based on iPhone Model --> You need to Identify your iPhone model - Apple Support

• iOS 15.7 —> 6S / 6S Plus, SE (1st Gen), 7 / 7 Plus,
• iOS16.0.3 --> SE (2nd and 3rd Gen), 8 / 8 Plus, X, XR, XS /XS Max, 11,11 Pro /11 Pro Max, iPhone 12, 12 Mini, 12 Pro, 12 Pro max, iPhone 13, 13 Mini, 13 Pro, 13 Pro Max, 14, 14 Plus, 14 Pro and 14 Pro Max
• iOS 12.5.6 —> Final release supported on iPhone 5S, iPhone 6/6 Plus, 

Learn how to--> Update your iPhone, iPad, or iPod touch - Apple Support

The iPhone 7 Plus iOS update will only reach up to iOS 15.7 and nothing further. You will need an iPhone 8 or a newer iPhone model to install and use iOS 16.

Axel F.

An iPhone 7 plus can only be updated to iOS 15.7.

iOS 16 is compatible with these devices - Apple Support (IN)