Reset: Samsung Galaxy S II

Learn how to wipe or master reset the Samsung Galaxy S II through the menu or hardware keys. Find out more on this page:

 

Cache partition

Master reset

Safe mode

 

 

Cache partition

Wipe cache partition

If the phone is not working correctly, you may need to master reset it and also clear the cache partition. These two resets clear different parts of the phone storage. Unlike a master reset, wiping the cache partition does not delete your personal data.

 

To wipe the cache partition, follow these steps:

 

  1. Turn off the device.
  2. Press and hold both Volume Up and Volume Down keys at the same time.
  3. Press the Power key only until the phone vibrates once, then release only the Power key.
  4. Continue to hold the Volume up and Volume Down keys until the Android System Recovery screen appears.
  5. Press the Volume Down key to highlight wipe cache partition.
  6. Press the Home(GB only) or Power(ICS only) key to select.
  7. Make sure Reboot System Now is highlighted and press the Home (or Powerkey to reboot.

 

 

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Master reset

Master reset from settings menu

A master reset restores the original factory settings and may delete your personal data on the internal storage, such as downloaded content, ringtones, images, apps, and contacts. It does not delete data stored on the SIM card or SD card.

 

To perform a master reset, follow these steps:

 

  1. Back up all data on the internal memory. See: Back up & restore
  2. Back up all necessary data that is on the internal memory.
  3. From any Home screen, tap the Menu key.
  4. Tap Settings.
  5. Scroll to and tap Back up and reset.
  6. Tap Factory data reset.
  7. Tap Reset device.
  8. Tap Delete all.

 

 

Master reset with hardware keys

A master reset restores the original factory settings and may delete your personal data on the internal storage, such as downloaded content, ringtones, images, apps, and contacts. It does not delete data stored on the SIM card or SD card.

 

If the device menus are frozen or unresponsive, you can master reset using hardware keys. To perform a master reset, follow these steps:

 

  1. Back up all data on the internal memory.See Back up & restore
  2. Turn off the device.
  3. Press and hold both Volume Up and Volume Down keys at the same time.
  4. Press the Power key only until the phone vibrates once, then release only the Power key.
  5. Continue to hold the Volume up and Volume Down keys until the Android System Recovery screen appears.
  6. Press the Volume Down key to highlight wipe data / factory reset.
  7. Press the Power key to select.
  8. Press the Volume Down key to highlight Yes - Delete all user data.
  9. Press the Power key to select.
  10. Press the Power key to reboot.

 

 

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Safe mode

Turn on and use safe mode

Safe mode allows you to turn on the device with third-party apps disabled. Then you can easily remove all apps that may be causing a conflict or software problem.

 

To turn on safe mode and use it to fix app problems, follow these steps:

 

  1. Remove the battery from the phone.
  2. Re-insert the battery.
  3. Press and hold the Menu key.
  4. While holding the Menu key, turn on the device.
  5. When you see the lock screen, you can release the Menu key.
    'Safe mode' displays in the lower-left corner.

    30911-safe22.png
  6. Uninstall any third-party apps that gave you problems.

 

 

Turn off safe mode

To turn off safe mode, follow these steps:

 

  1. Press and hold the Power key.
  2. Touch Power off.
  3. Remove the battery.
  4. Re-insert the battery.
  5. Press the Power key to turn on the device, but do not touch any keys during the restart.
    Note: If this does not work, see: Cannot turn off Safe mode: Android

 

 

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