I moved a few months ago, but at the time it was somewhere between 65 and 69p PER DAY out of bundle, with a 'fair usage' limit of 25mb for the day to stay within that charge. Not bad when you think they used to charge 4 quid a MEG out of bundle.. For smartphones there's a 'Your Orange' app which lets you check your remaining data on the go, and you can see any additional daily charge levied (thinking about it, I'm pretty sure it's 69p)