yesterday I did a bit of research. I reset my iphone's data counter and hold a 2 minute skype call over 3g with my girlfriend. We held a normal conversation wit

yesterday I did a bit of research. I reset my iphone's data counter and hold a 2 minute skype call over 3g with my girlfriend. We held a normal conversation with both of us talking. After two minutes, I sent out 652 KB of data and received 798 KB. So this means that a minute of data is around 750KB. My mobile subscription (Swisscom) comes with 250MB of inclusive data for CHF 35/month (around $35 or EUR 25). With 750KB per minute, I can in theory talk for around 5.5 hours if I do nothing but Skype. My current data usage is around 50 MB/month, which leaves 200 MB unused which then is good for 4 hours of talk time. Not bad. I would have thought that a Skype conversation uses way more bandwidth than it apparently does.