I've got MBB with Three and we've got iPhones with the £15 all-you-can-eat PAYG. The MBB costs a hefty £25 for 7GB on PAYG but it works well and as a result we had the BT landline taken out nearly two years ago. (What a good move that was for all sorts of reasons). I typically get 8 to 10 mbps on the MBB HSDPA which is fine for most things. Speed fluctuates a bit but has been pretty reliable over the last couple of years. My iPhone 5 usually gives me 13 to 16 mbps. 4G arrived here (six miles south of Birmingham) yesterday and last night I recorded 53 mbps up and 12 down on the iPhone. Three are now offering 4G MBB for £35 for 60GB (+ £30 for the dongle/router) for 12 months. I know I could do it cheaper with a landline or even sign up for the One Plan on the iPhone then tether my PC but I have to say this package is very tempting. Any thoughts?