I'd be interested to see which mobile network has the fastest 3G/HSPA etc speeds. There's a Speedtest app for Android and IOS, which is free as you'd expect. After testing, there's an email option, so you can email yourself the result, which gives an image link, just like with the full Speedtest.net. Here's mine (tested first with the server it picked, then I selected the closest (Maidstone). Full signal, through an HSPA mast (not +, which should be faster). I'm on Three.
