HWChecker is a very simple app that allows you to check the operation of your buttons.

It has a user-friendly interface, so even if you don't know anything about programming or hardware, you can still use it.

You just have to select the type of button you want to check (for example, button, on/off switch, or push/pull sensor) and then select the device on which you want to check it (your phone, tablet, or other mobile devices).

It will then display the key codes and actions for you.

You can use this app to check the operation of your buttons on your phone, tablet, or other mobile devices.