Forgot password on Samsung Galaxy Tab S4 - how to reset? I've lost my password on my almost new Samsung Galaxy S4. Now I can't unlock the tablet, and I can't shut it down since all these actions require the password. The only thing I can do is restarting it.

Now I want to reset it to factory settings, so I can set a new password. However, all the guides to a hard reset say you have to turn it off first. This I cannot do since it requires the password.

How can I reset or shut down the tablet without a password?
If you have time, let the battery drain. Then power up the tablet with the charger. Press Power + Volume Up to go to recovery (until you see the recovery screen) and reset the tablet.
If not, hold Power + Volume Down for up to 45 seconds to restart the tablet. When it restarts, press Power + Volume Up to go to recovery (until you see the recovery screen) and reset the tablet.


Sources: 

Samsung Galaxy Tab S4 Reset Guide: How to Master Reset, Reset Network Settings, Soft Reset your Tablet

Samsung Galaxy Tab S4 - Factory Data Reset (Powered Off)