O2

I use a new back up phone and I am on a bundle deal for unlimited texts/phone call so data is outside of the deal. However i noticed that 02 are charging me for data (i think) about 2 pound every day since I got it and and (data ends every day etc) a...

I have an older phone with a mini sim and want to upgrade to a smart phone which will have a nano sim (or micro at least). The current sim won't break down to nano (older version). So can i get a new (nano) sim and retain the old number, how do i do ...