How to upgrade my iPhone

On your iPhone, go to Settings > General, then tap Software Update.

[Update your iPhone or iPad - Apple Support]

Kelvindekings Said:

"How can I upgrade my iPhone"

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Updating an iPhone 11 Pro Mac to iOS 16:

Update the iOS Using a Computer:

• Use my User Tip:  Update your iPhone Using a Computer - User Tip
• IMPORTANT: If you have an option to update, however, then be certain you backup your iPhone first. That way, you will have something to restore your iPhone from should anything go wrong with the update