The CodeJacked weblog has a nice primer on keyboard macros - keystroke sequences you can record and playback in various software applications to automate tasks.

Tap on the Settings gear within the Samsung Keyboard, then tap Keyboard size and layout. Select Reset, then Done. Alternatively, you can try simply restarting your Samsung device.

She also goes over how she changes her keycaps and then demonstrates removing and replacing her mechanical keyboard keycaps to a PBT keycap set.

Shortcuts, Hotkeys, Macros, Oh My: How to Remap Your Keyboard If you're looking to change key functions on your computer's keyboard in Windows or macOS, these methods can help.