If you find yourself locked out of your Samsung Tablet 4 because the home button is not working, don't worry, there are still ways to reset the password and regain access to your device. Here's a step-by-step guide on how to reset the password on your Samsung Tablet 4 even when the home button is not functional:

1. Use Samsung's 'Find My Mobile' Service: If you have previously set up a Samsung account and enabled the 'Remote Controls' feature on your tablet, you can reset your device's unlock password remotely using the 'Find My Mobile' service. Simply log in to your Samsung account from another device, select your locked tablet, and choose the option to unlock it.
2. Factory Reset: Perform a factory reset on your Samsung Tablet 4 to erase all data, including the password. To do this, power off your tablet, then press and hold the Volume Up and Power buttons simultaneously until the Samsung logo appears. Use the Volume buttons to navigate to the 'Wipe data/factory reset' option and press the Power button to select it. Confirm the reset and wait for the process to complete.
3. Seek Professional Help: If the above methods do not work or you are not comfortable attempting them yourself, consider taking your tablet to a Samsung service center or a professional technician who can help you reset the password without the need for the home button.

By following these steps, you should be able to reset the password on your Samsung Tablet 4 even when the home button is not functioning. Remember to set up alternative methods of unlocking your device in case you encounter similar issues in the future.