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When you use apps on your phone, various data is stored temporarily in the phone memory. If your phone runs out of memory, it may help deleting this data.
1. 1. Find "Storage"
Slide two fingers downwards starting from the top the screen.
Press the settings icon.
Press the required app.
2. 2. Delete temporary data
Press CLEAR CACHE.
3. 3. Return to the home screen
Press the Home key to return to the home screen.