Clear App Cache / Data:

NOTE: In case one of your applications doesn’t work properly or takes up too much storage, you might be able to fix these issues by clearing the app’s cache and / or data.

WARNING! When you clear an app’s data, all of your personal information stored within the app will be deleted, including login and credit card information, profiles, saved games, settings, high scores etc. It’s recommended to try fixing the issues by clearing the cache first.

  1. Tap “Apps” on the home screen
  2. Open “Settings
  3. Go to “Phone” and tap “Apps
  4. Swipe to the “All” tab
  5. Select the desired app
  6. Tap “Clear cache
  7. If necessary, tap “Clear data” > “OK

Reboot in Safe Mode and Remove an App:

NOTE: In case you have installed a third party application that causes problems on your phone and prevents you from removing it, you should be able to uninstall it from Safe Mode. In Safe Mode all third party apps are disabled.

  1. With the device powered on, press and hold “Power
  2. In the pop-up window, tap and hold “Power off
  3. When prompted to “Reboot to safe mode”, tap “Restart
  4. Once the phone finishes rebooting in safe mode, open the apps drawer and go to “Settings
  5. Scroll to “Phone” and tap “Apps
  6. Swipe to the “Downloaded” screen and select the desired app
  7. Tap “Uninstall” > “OK” to confirm

Wipe Cache Partition:

NOTE: If your phone is unresponsive or crashes / freezes, you might be able to fix this behavior by clearing the device’s cache partition. This can have a similar effect as a factory reset, without losing any personal data on the internal storage.

  1. Press and hold “Power” to turn off the phone
  2. With the device powered off, press and hold “Volume Down
  3. Press and release “Power” while holding “Volume Down
  4. When the device displays a black screen with red and blue lines of text, release “Volume Down
  5. Press “Volume Down” repeatedly to navigate to and highlight “reboot to bootloader
  6. Press “Power” to select the highlighted option
  7. In the next menu, use “Volume Down” to highlight “Boot to Recovery Mode
  8. Press “Power” and wait for the recovery menu to appear (it may take several minutes)
  9. From the “Android system recovery” screen, use “Volume Down” to highlight “wipe cache partition
  10. Press “Power
  11. Once the cache is wiped and “reboot system now” is highlighted, press “Power

NOTE: If clearing the cache partition didn’t help, you can visit this thread for a guide on how to factory reset the Desire 520.

See More: HTC Desire 520: Clear App Cache / Data; Reboot in Safe Mode; Wipe Cache Partition