Clearing the Cache Partition:

In case you are experiencing issues with your smartphone and you're considering master resetting it, then you might want to try clearing the cache partition before doing so. Clearing the cache will not result in loss of personal data, and it could sort the issues. To do this:

  1. Power off your smartphone
  2. Press and hold the "Volume Up", "Home" and "Power" buttons at the same time
  3. Once the phone vibrates, release the "Power" button but keep pressing the other two
  4. As soon as the "Android System Recover" screen appears, release the "Volume Up" and "Home" keys
  5. Use the volume rocker to navigate to and highlight "wipe cache partition"
  6. With the aforementioned option highlighted, press "Power" to select it. Your phone will now clear the cache and reboot in normal mode

Master Resetting via the Settings Menu:

If clearing the cache didn't help, then you can apply a master reset via the settings menu. WARNING: master resetting your smartphone will result in loss of personal data, including custom ringtones, photos, apps, contacts and downloaded content. Data stored on the SD and SIM cards will not be affected.

  1. If necessary, back up your personal data
  2. From the home screen, press "Menu"
  3. Tap "Settings"
  4. Scroll to "Accounts" and tap "Backup and reset"
  5. Optionally, clear the check boxes associated with "Automatic restore" and "Back up my data"
  6. Select "Factory data reset" > "Reset device"
  7. If your smartphone's screen lock is enabled, enter your PIN or password and tap "Continue"
  8. Press "Delete all"

Master Resetting via Hardware Keys:

Assuming that your smartphone is frozen, crashes constantly and otherwise won't allow you to apply a factory reset form the settings menu, you can still reset your device through a combination of hardware keys. WARNING: resetting your device to factory values will result in loss of data stored on the internal storage

  1. Back up your data if necessary
  2. Power off the smartphone
  3. Press and hold "Volume up", "Home" and "Power" at the same time
  4. Release the "Power" button as soon as the phone vibrates
  5. When the "Android System Recovery" screen pops-up, release the other two buttons
  6. Press the "Volume down" button to navigate to and highlight "wipe data / factory reset"
  7. Press the "Power" key to select the option
  8. Use the volume rocker to highlight "delete all user data"
  9. Press "Power" again to select the option and start the resetting process
  10. Once the phone has been reset, the "Reboot system now" message will be highlighted
  11. Press "Power" to restart your smartphone in normal mode

Enabling Safe Mode:

Safe mode allows you to reboot your device with all the third-party applications disabled. This can be very helpful if you've installed a malicious app that doesn't allow you to reboot your smartphone in normal mode, or it prevents you from uninstalling it. To reboot in safe mode:

  1. Turn off your smartphone
  2. Press and hold the "Power" button
  3. As soon as the "Samsung Galaxy" screen appears, release the "Power" button and immediately press and hold "Volume down" instead
  4. Continue to hold the volume key until the smartphone reboots completely
  5. If done correctly, the "Safe mode" message will appear in the lower-left corner

To get rid of the problematic app:

  1. Press "Menu" while on the home screen
  2. Tap "Settings"
  3. Go to the "More" tab
  4. Select "Application manager"
  5. Swipe to the "Downloaded" screen and tap the application that you wish to get rid of
  6. Tap "Uninstall" and press "OK" to confirm
  7. To get out of Safe Mode, press and hold the "Power" button and tap "Restart"

See More: Samsung Galaxy Grand 2: Master Reset, Clear the Cache and Boot in Safe Mode