The first tutorial in a series aimed at showing some of the more esoteric features available to Unity developers. In this tutorial, we cover the basics of ev...
You need to stay under 10k vertices and 20 drawcalls for your game to have a chance of performing well on a 3G. I have a 3G as my primary test device and that's what I've seen.
The primary weakness of the 3G is its CPU is really slow so you won't be able to have much physics, AI, or any other CPU related activities going on.