How do I troubleshoot a malfunctioning mobile device keyboard?

1. First: Check if the keyboard is Where it Should Be
2. Second: Restart the Mobile Device
3. Third: Update the Mobile Device’s Operating System and Apps
4. Fourth: Check for Keyboard-specific Settings
5. Fifth: Check the Key Remapping System
6. Sixth: Run an Antivirus Scan
7. Seventh: Clean The Mobile Device Keyboard
8. Eighth: Swap Out the Keyboard