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How to Factory Reset Samsung Galaxy Note 7 with Hardware Keys
If you find that the touchscreen is unresponsive on your Note 7, you still factory reset your Note 7 using the hardware keys.
• Turn off the Samsung Note 7.
• Press and hold the Volume up button, the Home button, and the Power button at the same time until you see the Android icon.
• Using the Volume down select wipe data/factory reset option and press the Power button to select it.
• Using the Volume down highlight Yes – delete all user data and press Power to select it.
• After the Galaxy Note 7 has rebooted, then use the Power button to select it.
• When the Galaxy Note 7 restarts, everything will be wiped and will be ready to set up again.