Well, actually, this is not in my opinion a telephony question, but a programming one. The ultimate question is actually "how can I improve communications performance for smartphone applications over 3G?", but not only that's an incredibly broad question, but also too much "do my homework". So I thought that a good starting point would be to learn more about the 3G network stack, and asked this question at SO, where it got closed. So I came here. I think SF is not only the most likely place to get an answer, but also where people interested in this question are. (reflected by the upvotes)

Just a small side question: Do you think the question is not appropriate because of the definition of this site? (impartially applying the rules) or because you think it is not in the general spirit of this site.

Okay, thank you very much. Where do you think I could take it to?