To remove cache you will need to select the menu in the bottom right corner. You will then need to select the settings option at the bottom of the list.
Under the privacy settings select ‘Clear Private Data’. You will have the option to select which area of private data you would like to remove. If you would like to remove cache alone you will need to ensure that the other tabs are turned off. If the tabs are off they will appear grey, if they are on they will appear blue.
Once you have selected ‘Cache’ you will need to select ‘Clear Private Data’ at the bottom of the page.