Gboard, the popular Android keyboard, now includes undo and redo buttons in its latest stable update (version 15). These function like Ctrl+Z and Ctrl+Y on a computer but undo only one letter at a time. The buttons can be accessed via the shortcuts menu and dragged to the shortcuts bar for convenience.
This update follows recent Gboard tweaks, including a revised Assistant Voice Typing layout and more rounded keys, making typing more efficient than ever.
Source: Android Authority