Rajesh Jain in his  Weblog on Emerging Technologies, Enterprises and Markets - Emergic.org talks about the growth of mobile industry in India. Pertinent information on providers, growth rates and costs of various services are highlighted. I for one was interested to see how messaging charges vary so greatly from region to region.

India Per Capita Income: $600 [Population: 1 billion]

PCs: 18 million; growing at 5 million/year
Internet users: 35 million; growth 50%/year
Cybercafes: 100,000; accounts for two-thirds of Internet access
Landlines: 45 million (declining slightly)
Broadband users: 1 million (most additions in 2005)
Broadband: $5 per month for 256 Kbps with 100 MB download
eCommerce: $250 million; growing at 100%
Online Advertising: $35 million; growing at 30%; 1.2% of total advertising spend

Mobiles: 75 million; growing at 4.5 million/month; 77% pre-paid; 75% GSM; 25% CDMA
Mobile Voice calls: 3c/min (avg); SMS: 2c/message
In India, calling party pays for calls. There is no charge for receiving SMSes.
GPRS-enabled phone: $80+
GPRS Tariff: $8+/month for 100 MB download (plans vary across operators)
Mobile VAS: $90 million; growing at 40%
Mobile ARPU: $8.50 [Split: Voice: 70%; Rentals: 20%; VAS: 10%]
Mobile VAS Split: Person-to-Person SMS, Caller Line Identification, Roaming: 70%; Content: 30%
Content: Ringtones, Ringback Tones, Games, Wallpapers, Interactive Voice Response, Person-to-App SMS
Content Providers get about 10-30% of revenue for their content