In year 2000 GSM were Offering Service but there was no Data Enhancement which Support Browsing
Soon after that in 2003 GPRS, WAP Started followed with Free Call Divert, Call Waiting, Dialer Call back tone, EDGE, Background Tones, Missed Call Alert
and everybody knows that CDMA were 2 year behind in all these. Missed call alert, Dialer Tones have been Introdueced too late.
Now already EDGE is there which Support Better Data rate and Always on Net without Disturbing the Incomming Calls etc.
Reliance and Other CDMA have Best Backend Technology but in Front end Device they have ZERO, and aldo in Value Added Services they are Far Behind GSM
And Lets HSDPA come it will Throw Stif Competetion to CDMA with Bettyer Data Rate and Congestion Less Traffic as it more Efficent Technology at par with EVDO Rev A.
Reliane have Better International Bandwidth with Good National Fiber Backbone but Still Airtel is Getting more Subscriber that Reliance this Directly Shows the GSM is more Prefered and Loved Technology.
It Love GSM and want to go to HSDPA