In reply to Neil Williams:
I just left O2 due to their new data plans, where you have to pay for massive ammount of minuttes to get the high end data plans.
Also used to be on the unlimited data from O2.
Think data usage vary a lot depending on how they meassure it.
My phone will tell me a data usage specific to programme, and the browser (opera) also gives the data usage but there is a huge difference in the two.
Still waiting to see my usage from T mobile to see how much they say i have used.
On O2 i used an average of 740 Mb a month, without streaming much media.
So far i have used it more on my new contract with T mobile as signal is better at work, and the phones listed usage is a lot less than what O2 say i used to use......