Who is you favourite network operator for your mobile phone? Why would you recommend them? How long have you been with them and what like is there customer service ? I have has experience on pay as you go on all networks except 3 and Virgin Mobile. I have had a contract on T-Mobile for 2 x 18 month contracts and then i moved to o2 and i have had 1 x 18 month contract and i am now on to my second 18 month contract Out of all i would say T Mobile i would say are ok but had very little dealings with there customer service desk until i had to upgrade my contract and i ended up paying for 2 lines for 3 months until it was sorted out - thats my only gripe is make sure you cancel your old contract if they take out a new one for you as upgrade and new contract prices vary. O2 today have been very good i have had no issues with them at all and even have the early upgrade options for the iphones this is brilliant.