Company founder, geek and entrepreneur, Josh Russell, posted this link to a very useful set of instructions on how to use your iPhone 3G (using OS version 3.0) to share it’s data connection. The concept being that you don’t need to mess around with a 3G data dongle — you can just use your iPhone instead. And avoid paying your operator extra for the privilege.
Richard Lai is the author of the set of instructions — and looking through them, I reckon it’ll take maybe 10 minutes to complete the steps. I’ll have a play of this later on.
Interestingly you can either tether via Bluetooth or USB — although Richard points out that you’ll kill the already rubbish iPhone battery by Bluetoothing — so you’re better to use the USB cable.
There’s no need to jailbreak or do anything untoward to your device and Richard has tested this on an iPhone 3G 16GB on o2 UK and also on an iPhone 3GS on o2.
Richard also recommends avoiding using your newly tethered iPhone to watch/download too much streaming video — or do anything that might quickly take you over your fair-use ‘unlimited’ data allowance.
It looks like you’ll be able to do this on with almost any official iPhone. There’s a link from Richard’s site to grab the AT&T config file (as well as the o2 UK and European ones).
Thank you for posting, Richard — and nice one Josh.