How do I extend the hardware of Raspberry Pi to add GSM/3G connection? Is it likely that the Android port will be able to utilise such a connection?
I just saw this tutorial and seems you do not need an Arduino for attaching the 3G.
This video was posted weeks after the question was asked. Not sure about 3G though http://priyank.in/2012/09/myphone-5-a-gsm-based-phone-using-raspberry-pi-and-simcom-900/