From your Cello home screen click the grey icon to open the main menu.
From here you will be taken to the apps screen find you'll find the 'Settings' option.
Tap on the 'Settings' icon to open up the area. On the left hand side of the screen, tap the 'Apps' option under the 'Device' header.
From here you will see the tab for 'Downloaded' apps.
We're looking for 'All' apps, so scroll left until you see the 'All' tab at the top of the screen.
From here, tap on the 'Browser' option.
In the 'Browser' options, you'll see the 'Clear Cache' button located in the 'Cache' section, tap on this.
Your cache is now clear and you should see a difference in the speed of your computer tablet and your storage availability.