Clear App Cache/Data:

NOTE: In case one of your applications doesn’t work as intended, crashes, freezes, or takes up too much storage inexplicably, you can try fixing these issues by clearing the app’s cache and/or data.

WARNING! When you clear an app’s data, all your personal data stored within the app will be deleted, including settings, user profiles, save files, high scores, credit card and login information etc. To avoid losing personal app data, clear ONLY the app’s cache.

  1. Open the apps drawer and launch “Settings
  2. Tap “Apps” and select the desired application
  3. Access “Storage
  4. Tap “Clear cache” to clear the app’s cache
  5. If clearing the cache didn’t help, tap “Clear data” (check WARNING above)

Wipe the Cache Partition:

NOTE: If your phone crashes, freezes, runs out of storage inexplicable or otherwise doesn’t work as intended and you’re considering factory resetting it, alternatively you can try fixing these issues by clearing the phone’s cache partition. This can lead to results similar to a factory reset, without losing any personal data on the device.

  1. First make sure the phone is powered off
  2. Then, press and hold “Home” and “Volume Up” at the same time, then press “Power” as well
  3. At the “Android” logo, release all buttons and wait up to 1 minute for the Android System Recovery screen
  4. Once in Recovery, press “volume down” repeatedly to highlight “wipe data / factory reset
  5. Press “Power” to select the highlighted option
  6. Press “volume down” to highlight “wipe cache partition
  7. Press “Power
  8. Next, highlight “Yes” using “Volume down” and press “Power” again
  9. Once the cache is cleared, highlight “Reboot system now” and press “Power” one last time to confirm

NOTE: If clearing the cache partition didn’t solve the issues, you can check this thread for instructions on how to factory reset the device instead.

Reboot to Safe Mode and Remove an App:

NOTE: If you have installed a third party application that causes issues and prevents you from removing it, you can try uninstalling the app from Safe Mode. In this mode, all third party apps are disabled.

  1. Turn the phone Off if necessary
  2. Press and hold “Power” past the model name screen
  3. At the “Samsung” logo, release “Power” and immediately press and hold “Volume down” instead
  4. Keep “Volume down” pressed until the device finishes rebooting. Once done, you should see a “Safe Mode” watermark in the lower area of the home screen
  5. To remove an app, launch “Settings” and go to “Apps
  6. Select the desired app and tap “Uninstall” two times
  7. To exit Safe Mode, press and hold “Power” and tap “Restart

See More: Samsung Galaxy J3 (2017): Clear App Cache/Data; Wipe Cache Partition; Reboot to Safe Mode