Dont know whether my comment is relevant. I wish to speak about Reliance CDMA network in konkan (Mumbai-Goa highway). In January this year, I drove from Ganpatipule to Mumbai and had a really bad experience about RCDMA. The network was barely available at Ganpatipule (i stayed at Bhandarpule) and next came a big shock. I went to three places enroute. Diveagar, Shrivardhan and Harihareshwar, and the CDMA network was zero at all these places.
I was there for two days and initially assumed that something was wrong with my handset. But then I asked mobilephone vendors in the region and found none of them selling RCDMA connections. The network is shut in this region, they said.
I can understand a company not maintaining a network in one village, but these places (Divegagar, Harihareshwar, Shrivardhan) have huge tourists footfall and no company can ignore its network here. RCDMA does. This was one reason why I ported back to Idea a few months later. Pathetic experience.
Otherwise, RCDMA and RGSM networks are fantastic in Mumbai.