If the Samsung Galaxy Note 9 suddenly doesn't react anymore and the screen is frozen, then you can't use the smartphone any more.
So that you don't have to wait until the battery is completely discharged and the smartphone turns itself off on its own, there is a useful function that forces a restart.
This function is called "Soft Reset" and is used whenever the Samsung Galaxy Note 9 no longer responds.
The Soft Reset works similar to removing the battery. Since this is no longer so easy with the Samsung Galaxy Note 9, the Soft Reset is an adequate solution. And you do this as follows:
Soft Reset on the Samsung Galaxy Note 9
1. Press and hold the Power On/Off button for at least 15 seconds
2. Your Samsung Galaxy Note 9 will be restarted immediately
3. Android will start normally Your Samsung Galaxy Note 9 should then work as normal again. If the phenomenon described above occurs more often on your smartphone, a faulty app or malicious software may be responsible.
You should then check your Samsung Galaxy Note 9 intensively.
You now know a quick and easy method to restart the Samsung Galaxy Note 9 when the display is frozen and the device no longer responds to inputs.