WARNING! Master resetting the phone will result in the deletion of all personal data stored on the device’s internal memory, including applications, contacts, downloaded content, media files and ringtones etc. Furthermore, all settings will be restored to factory values. However, data stored on the SIM and SD cards will not be affected.

NOTE: Before factory resetting the phone, you can visit this thread for instructions on how to back up and restore data on the Samsung Galaxy S7.

Master Reset via Settings:

  1. Tap “Apps” on the home screen
  2. Go to “Settings
  3. Scroll to “Personal” and tap “Backup and reset
  4. Optionally, enable or disable “Back up my data” and “Restore
  5. Tap “Factory data reset” > “Reset device
  6. In case your phone is protected by a lock screen, enter your password or PIN to proceed
  7. Tap “Continue” > “Delete all” to confirm

Master Reset via Recovery (Hardware Buttons):

NOTE: If your phone crashes, freezes, or otherwise doesn’t allow you to reset it via Settings, you can try resetting the device from the recovery menu, which can be accessed by performing a combination of button presses.

  1. First, turn off the device
  2. Next, press and hold “Volume Up”, “Home” and “Power” at the same time
  3. At the “Samsung” logo, release “Power
  4. When the “Android” logo appears, release “Volume Up” and “Home”. (NOTE: The device might take 30-60 seconds to show the Android system recovery menu)
  5. From the recovery menu, press “Volume down” repeatedly to navigate to and highlight “Wipe data / factory reset
  6. Press “Power” to select the highlighted option
  7. Press “Volume down” to highlight “Yes – delete all user data
  8. Press “Power” to confirm
  9. Wait for the reset to complete, and once done, “Reboot system now” should be highlighted
  10. Press “Power” to confirm and reboot your phone

Check for Firmware Updates:

NOTE: After factory resetting your phone, it’s recommended to check if new software updates are available for download. To do this:

  1. Open the apps drawer
  2. Go to “Settings
  3. Scroll to, and tap “About device
  4. Check the software version, and follow the on-screen prompts to download and install an update if applicable

See More: Samsung Galaxy S7: Master Reset and Check for Firmware Updates