Been on 3 now for about a month now. Checked my data usage allowance yesterday and found I only had 456mb remaining. Strange, I thought as I'm on the "all the data you can eat" "One Plan". Rang Customer Services and was told that the "unlimited data" had just been introduced but my allowance was based on the old 1GB plan. I was informed that if I did hit my stated "allowance" I wouldn't be charged. Might be worth checking yourself if you're on the "One Plan". So come on 3, upgrade your system to reflect current contracts.