Reset: Samsung Galaxy S 4G T959v

Learn how to wipe or master reset the Samsung Galaxy S 4G T959v 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 phone.
  2. Note: If the phone will not power down, remove the battery and reinsert it.
  3. Hold the Volume Up, Volume Down and Power Key simultaneously.
  4. Release the keys when the Android recovery screen appears.
  5. Press the Volume Down key to highlight Wipe Cache Partition.
  6. Press the Power key or Home key (this varies based on the software version of your phone) to select.
  7. The phone will display Cache Wipe Complete after a few seconds.
  8. Press the volume keys to highlight Reboot System Now.
  9. Press the Power key to select.

 

 

Back to top

 

 

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. From any Home screen, tap the Menu key.
  3. Tap Settings.
  4. Scroll to and tap Privacy.
  5. Tap  the Automatic restore check box to  turn off, if desired.
  6. Tap  the Back up my data check box to  turn off, if desired and tap OK.
  7. Tap Factory data reset.
  8. Check/uncheck the Format USB storage, if desired.
  9. Tap Reset phone.
  10. Tap Erase everything.

 

 

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. Save any open files and back up all necessary data. See: Preparing for a master reset on Android.
  3. Turn off the phone.
    • Note: If the phone is unresponsive and does not turn off, remove the battery and then re-insert it.
  4. Hold down the Volume Up, Volume Down, and Power keys simultaneously.
  5. When the Samsung logo appears, continue to hold the keys until the master reset menu appears.
  6. Press the Volume Down key to select Delete all user data or Wipe Data / Factory Reset.
  7. Press the Power key to confirm your selection.
  8. Press the Volume Down key to select Yes – delete all user data.
  9. Press the Power key to confirm your selection.
  10. Press the Power key to select reboot system now.

 

 

Back to top

 

 

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

 

 

Back to top