Samsung Galaxy Note9 - Factory Data Reset (Powered Off)
A factory data reset may help with a blank or frozen screen, apps crashing or freezing, keypad/touchscreen problems, can't hear, device making noises, can't make or receive calls, and device won't sync.
For devices with Android Device Protection turned on, it's imperative Google™ sign-in credentials are known prior to completing a factory reset with the device powered off. If credentials are unknown, do one of the following:
Attempt to sign in with any Google account previously used on the device.
Perform a factory data reset only if absolutely necessary as it removes all data including:
System and app data
Media (Music, pictures and videos, etc.)
Ensure the device is powered off.
Simultaneously press and hold the Volume Up, Bixby and the Power button.
Continue to hold the Volume Up, Bixby and the Power buttons until 'Samsung Galaxy Note9' displays on the screen.
Release the buttons once the screen goes blank and the 'Android Recovery' screen appears.
From the 'Android Recovery' screen, select Factory Reset.
Utilize the Volume buttons to cycle through the available options and the Power button to select.
Allow several minutes for the reboot process to complete.
If applicable, set up your device.