Are there any numbers of how much memory there is to stuff with textures? So to say the memory that is left after Unity loaded up?
Interested in: iPhone 3G, 3Gs, iPod 1st gen and iPod 2nd gen
Apple recommend no more than 25MB. On the 1st gens, you can sometimes get up to around 35MB without crashing, and on the 3GS you can get to around 50MB. I would really recommend not going about 25MB though, as the iPhone isn't very good at freeing up memory in between apps, which can often cause crashes.