O2

I've added an extra called cafeyn.just how do I access it ?.I don't know how to access it .There is no link or anything

I am wanting to check something with 02 . just to save me calling them can I use a live chat .if so where do I go to use this

I have an o2 pay monthly phone. so I have a mobile data of 2GB. which I don't use as I use home wi fi . now I'm using it and it says that I will not go over 2GB of data as that's qll I have to use. so now it's saying I've used so yesterday I thought ...