How to find out how much Internet I have left?

I'm on contract with EE and I have no idea how much Internet I have left on my iPhone. Is there a number to call or can I go on something on my iPhone which tells me how much Internet I have left?

611 is the customer service number and its always free to dial.

If i'm not mistaken you can download an App on your phone that can tell you various pieces of information about your price plan and what you have used in terms of minutes.

If its like most over apps like my 02 i can see how much data i have used and got left

http://help.ee.co.uk/system/selfservice.controller?CONFIGURATION=1016&PARTITION_ID=1&secureFlag=false&segment=consumer&TIMEZONE_OFFSET=&CMD=VIEW_ARTICLE&ARTICLE_ID=20226

there's a link to the app on EE's website