After tooling around with
getting internet sharing working on the
Sprint Mogul for a bit, we discovered this small WMWifiRouter
app by Jorrit Jongma. It’s pretty much an install and run affair
(save a bit of internet connection Wi-fi setup beforehand), but the
only thing you have to watch out for is using a static IP address
on the device you want to access it with (iPhone/laptop/whatever)
because there’s no DHCP server present. There’s a good guide in the
XDA
Dev forum as well. The result? A 3G-ish iPhone. [WMWifiRouter]

Original post by Jason Chen