Get tips on iPhone - Apple Support
Record the screen on your iPhone, iPad, or iPod touch - Apple Support
Mark a device as lost in Find My on iPad - Apple Support (TJ)
How to share an iCloud calendar on iPhone, iPad, and iPod touch
Two-factor authentication for Apple ID - Apple Support
How to Identify Your iPhone and iPad Model
How to check the storage on your iPhone and iPad - Apple Support
Identify your iPhone model - Apple Support
iPod touch - Official Apple Support
Identify your iPod model - Apple Support
How to erase all content and settings - Apple Support