iPhone - how to disable Shake for undoing read/unread email? Can anyone help me understand if there have been changes to the &quot;shake-to-undo&quot; feature specific to Mail using it to undo marking messages read/unread? My mom gets a pop-up just about every time she opens Mail, asking &quot;Undo read message?&quot;
We both have shake-to-undo enabled globally, but mine does not do this (nor do I want it to). Shake-to-undo typing is working equally for both of us.
In further troublehsooting, I notice that I'm still in iOS 12.3.1, and she's on 13.x (not at her phone rn).
Does anybody recall this behavior being specifically added in iOS 13? By any chance has it been changed since then? I've done a lot of searching on this, and there are countless posts from others who are frustrated by it.
We had to turn off the global setting to get her phone to stop doing this, which is unfortunately b/c it is otherwise an important and useful feature.
Open the settings app
Swipe down slightly
Enter undo in the search field
Tap “Swipe to undo”
Make your choice


The setting is global and not app specific.
Since you didn’t list actual troubleshooting steps, once you conclude you can suppress this by disabling it globally and that it returns.
Look for other differences for your experience. Different accelerometer sensitivities, different actual accelerations or pursue software resets.

power cycle it normally
force reset the device
Leave the undo off for a day globally
restore the device
swap or repair the hardware

Being organized is the only way to troubleshoot a frustrating situation like you mention.