4. Clear the app’s cache. This frees up space by removing temporary files.
5. Reset the phone.
Keyboard not working
If your keyboard has problems, like a missing spacebar:
1. Check for updates to your keyboard app.
2. Turn your phone off and then on again.
3. Clear the cache for the keyboard app.
Problems with Facebook, WhatsApp, other apps
If you’re having problems with messaging apps that you installed:
1. Check for updates to the app.
2.
If you can open the app, touch or > Help and look for troubleshooting information.
3. Turn your phone off and then on again.
4. Clear the app's cache.
Gmail problems
For help with Gmail, read Google's troubleshooting information.
Play Store problems
For help with Play Store, read Google's troubleshooting information.
Fix a problem : App issues 198