Find the software version on your iPhone, iPad, or iPod - Apple Support

Where to find downloads on your iPhone or iPad – Apple Support (UK)

What Version of iOS Does My iPhone or iPad Have?

My iPhone won't update to the current iOS… - Apple Community

How to back up your iPhone, iPad, or iPod touch to your Mac — Apple Support

If you're missing notes on your iPhone, iPad, or iPod touch - Apple Support

iOS versions: Every version of iOS - and the latest iOS version

Set up iPhone - Official Apple Support

Call with Wi-Fi Calling - Apple Support

Watch on iPhone or iPad - Apple Support

Update your iPhone or iPad - Apple Support

How to uninstall iOS or iPadOS beta software - Apple Support

How to update your iPhone

iPad models compatible with iPadOS 17 - Apple Support

How to find what iOS version the iPad is running

How to Restore your iPad with iTunes : IRIS Software Systems Ltd