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

Restore an iPhone, iPad, or iPod touch that needs a newer version of iOS or iPadOS - Apple Support

Locate a device in Find My on iPod touch - Apple Support

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

About software updates for Apple devices - Apple Support

Move from Android to iPhone, iPad, or iPod touch - Apple Support

Apple - Support - Downloads

Check your Apple ID device list to find where you're signed in - Apple Support

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

If you can't update or restore your iPhone or iPod touch - Apple Support

Use Tags and Smart Folders in Notes on your iPhone and iPad - Apple Support

Apple Releases iOS 8.2, It's The Big One