BSNL offers speeds of 3.6 Mbps in Single Band frequency and 7.2 Mbps in Tri Band frequency.Airtel also one of the leading mobile networks is also offering speeds of 3.6 Mbps and 7.2 Mbps in 3G Plans.Reliance offers plans of Download speeds upto 21 Mbps and upload of 5.7 Mbps in 3G. However the exact speeds one would get from reliance 3G may vary a lot and should be verfied on location to location basis.
Tata Docomo is offering speeds upto 21.1Mbps on its advanced 3G known as 3.5G+.Â Idea is offering speeds of 3.6 Mbps on its 3G network and is known to deliver what they promise and have shown reliability in the past. Vodafone India is also planning speeds upto 21.1Mbps and will soon roll out attractive plans in every city in India.
Considering the past experiences of these service providers and the plans offered by each of them, it would be better to bet on Vodafone or Tata Docomo for your wireless 3G needs. Idea has also has the reputation of staying near to the speeds they promise.