How can I update my apple phone

Assuming you have a compatible device, see: Update your iPhone, iPad, or iPod touch - Apple Support

And: If your iPhone, iPad, or iPod touch won't update - Apple Support

If the above Apple articles do not help, please post back with relevant information. 

Nanakey Said:

"How can I update my apple phone: How can I update my phone"

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Updating an iPhone:

What's the model of your iPhone?

Use my User Tips:

• Computer:  Update your iPhone Using a Computer - User Tip
• Cellular: Use an iPhone 12 or later, that is using 5G, in order to update over Cellular - 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