This is yet another reason to love Airtel! 3G was enabled on my phone ever since they were offering free trials in the month of Feb-March 2011. However for some reason, even though my Nokia N73 was 3G enabled, I still got slow EDGE speeds, not sure why.
After I got my Android phone, I experienced real 3G speeds of 3.5 Mbps, however the free 3G trial ended soon after a few days. Yet, when I set my phone to 3G mode post the trial, I get a constant speed of 500-800 Kbps, which is on my 2G Mobile Office plan priced at 98/month with a 2G free data usage limit.