Lately I have noticed that I get prompted to “undo typing” or cancel my text. I would hurriedly press cancel and after getting the message a few times I started to think something was becoming buggy with my phone or my fat fingers were accidentally pressing some wrong button. The I realized — wait there is no “undo” button/feature on the phone where the hell is it coming from? After some quick research, I found out there is an unpublished “undo” feature on the iPhone after SDK 3.0.
Ready for it…..and….
Activate Undo Text Feature:
After typing on the iPhone, shake the phone to undo what you have typed.
Sean Shadmand 