There is more than one way to undo and redo instantly when typing text on an iPhone.
iPhone 12 / Pro / Max: tips and tricks - PhoneArena
some updates on
How to undo/redo on an iPhone - PhoneArena
How to Undo and Redo Typing on an iPhone
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Massive iOS 13 leak details Dark Mode, improved iPad multitasking, undo gesture, and much more - PhoneArena
How to undo/redo on an iPhone - PhoneArena
How to undo/redo on an iPhone - PhoneArena
How to Undo and Redo Typing on iPhone and iPad - iGeeksBlog
How to take a screenshot on iPad - PhoneArena
iPhone 12 / Pro / Max: tips and tricks - PhoneArena