Use iMessage apps on your iPhone and iPad - Apple Support

Share and assign reminders on your iPhone or iPad - Apple Support

Add or remove your phone number in Messages or FaceTime - Apple Support (CA)

Switch apps on your iPhone, iPad, or iPod touch - Apple Support

Contact - Official Apple Support

Use message effects with iMessage on your iPhone, iPad, and iPod touch - Apple Support

Use Memoji on your iPhone or iPad Pro - Apple Support

Delete emails on your iPhone or iPad - Apple Support

Unsend and edit messages on iPhone - Apple Support

Set up iCloud for Messages on all your devices - Apple Support

Search within your text messages on iPhone - Apple Support

Two-factor authentication for Apple ID - Apple Support

Use Focus on your iPhone or iPad - Apple Support

Share your name and photo in Messages on Mac - Apple Support