Step 1. From the home screen of your Android phone, navigate to the Settings app.
Step 2. Scroll down the Settings page to find the Storage tab. Open it and go to the bottom of the screen to tap the Cached data tab.
Step 3. Press the Cached data tab and a popup will appear to delete it. Just select OK option to confirm the deleting process.
After that, all of your cached data and temporary files will be wiped completely from your Android device.