Clearing the cache will not affect any saved image files; this only removes temporary files created by the app.
Make sure that your device is connected to the Internet.
On some models, it may say “System Update. “[1] X Research source It takes some time to check whether the updates are available. The time depends on the speed of your Internet connection.
It takes some time to download updates on your phone. The time depends on the speed of your Internet connection and on the size of the update file. A progress bar will appear displaying the status of the update.
Press and hold the power button on the right side of your phone. Tap Restart Tap Restart to confirm. Wait for your phone to restart.