Type with the onscreen keyboard on iPhone - Apple Support

Use Visual Look Up to identify objects in your photos and videos on iPhone - Apple Support

Send email in Mail on iPhone - Apple Support

7 ways to make your iPhone keyboard bigger

Create and edit events in Calendar on iPhone - Apple Support

Add emoji and stickers with the iPhone keyboard - Apple Support

Switch between open apps on iPhone - Apple Support

View Live Activities in the Dynamic Island on iPhone - Apple Support

Change iPhone keyboard sounds or haptics - Apple Support

Move your cursor with the keyboard — Apple Support

Virtual keyboards Apple Developer Documentation