Clear App Cache / Data:

NOTE: If one of your applications doesn’t work as intended or takes up more space than it should, you might be able to fix these issues by clearing the app’s cache and / or data.

WARNING! Clearing an app’s data will result in the deletion of all personal data stored within the app, including credit card and login information, profiles, saved games, high scores etc. As such it’s advised to clear the app’s cache first and see if this solves the problems.

  1. Tap “Apps” on the home screen
  2. Go to “Settings
  3. Under “Applications”, tap “Application manager
  4. Swipe to “Downloaded” or “All
  5. Select the desired app and tap “Clear cache
  6. If necessary, tap “Clear data” > “OK

Reboot in Safe Mode to Remove an App:

NOTE: In case you have installed a third party application that causes problems and prevents you from removing it, you should be able to uninstall the app by first rebooting your phone in Safe Mode. In this mode all third party apps are disabled by default.

  1. Turn off the device
  2. Press and hold “Power
  3. When the “Samsung” logo appears, release the “Power” key but immediately press and hold “Volume Down
  4. Keep holding the volume button pressed until the phone powers up completely (you should see a “Safe Mode” label in the lower-left corner)
  5. Next, access “Settings
  6. Swipe to “Device” and tap “Applications
  7. Tap “Application manager
  8. Go to “Downloaded” and select the app you want to remove
  9. Tap “Uninstall” twice to confirm
  10. Once the app has been removed, reboot your phone as you normally would by holding “Power” and tapping “Restart

Wipe the Cache Partition:

NOTE: If your phone doesn’t work as intended and you are thinking about factory resetting it to solve these issues, then you might want to try and clear the phone’s cache partition first. This can have similar effects as a master reset, without losing your personal data.

  1. Turn off the phone
  2. Press and hold “Volume Up”, “Power” and “Home” simultaneously
  3. After the phone vibrates, release “Power” and “Home” but keep “Volume Up” pressed
  4. Once you see the “Android System Recovery” menu, release all the buttons
  5. From the recovery menu, use the volume buttons to navigate to and highlight “Wipe cache partition
  6. Press “Power” to select the highlighted option
  7. Once the cache has been wiped, “Reboot system now” should be highlighted
  8. Press “Power” and wait for the device to restart

NOTE: If wiping the cache partition didn’t help then you might want to visit this thread to see how you can factory reset the Samsung Galaxy J7.

See More: Samsung Galaxy J7: Clear App Cache / Data; Reboot in Safe Mode; Wipe Cache Partition