O2

Hi, I was wondering how many days after I pay last month's bill will the balance left to pay(if I'd want to upgrade now, which I do) go down? Because I've seen it goes down each month after I pay the bill...but so far this time it didn't and I want t...

So, in february this year i took out an OP 3T on a refresh contract...Now i want to get a Samsung s8 plus, but not through O2. All i'm asking is, can I pay off the device plan about £250 left and then cancel the airtime without any other payments to ...