Use Markup to add text, shapes, signatures, and more to documents on iPad - Apple Support
Use Night Shift on your iPhone, iPad, and iPod touch - Apple Support
5 ways to check warranty status of your iPhone or any Apple device
Use Siri on iPad - Apple Support
Where to find downloads on your iPhone or iPad - Apple Support
Access Control Center on your iPad - Apple Support
Use Quick Start to set up a child's iPhone or iPad - Apple Support
View your purchase history for the App Store, iTunes Store, and other Apple media services - Apple Support
Use Guided Access with iPhone, iPad, and iPod touch - Apple Support
Change the language on your iPhone or iPad - Apple Support
Set up your iPhone or iPad - Apple Support
See who has access to your iPhone or iPad – Apple Support (UK)