How to force s21 ultra to restart?

 How to force s21 ultra to restart?

To force restart a Samsung Galaxy S21 Ultra, press and hold the power button and the volume down button simultaneously for about 10 seconds. The phone should vibrate and restart automatically. If the phone does not respond, you may need to remove the battery and then reinsert it to restart the phone. It is important to note that forcing a restart of your phone should only be done as a last resort and may cause data loss or other problems. It is always best to try other methods of restarting your phone before resorting to a forced restart.