Airtel India offers Blackberry Data Plans at INR 1099 per month, plus INR 21000 for the 7100, and INR 25000 for the 7250 (i think, this is perhaps the model). If you purchase a BB from Airtel Official Showrooms (these are teh large company owned shops), you will get FULL BB SUPPORT. However, personally I think the costs are way too high, especially for tha handset.. (USD1 = 45INR). The 1099 monthly includes only data access and NOT voice.
You also have the option of getting BB Connect on certain other handsets including the Nokia 9300.
APN Settings for Airtel Normal, do not know if it will work with BB :
Access Point Name: airtelgprs.com
Connection Name : Mobile Office
Data Bearer : GPRS
User Name : Your mobile number preceded by 91
Prompt Passord : No
Authentication : Normal
Gateway IP Address : 202.56.231.117
Connection Security : Off
(courtesy
www.macandmobile.com, look under 'Carriers')
Orange settings are there as well.
Orange has a WAP service and a full internet service. you must get the full Internet Service to be of any use.
Orange offers Treo 650 with, if I am not mistaken, Snappermail Support, again, pricing the handset at INR 30,000 (obnoxious)
Persoanly due to the high cost of BB acess, If internet and POP3/IMAP Pull Email can be sufficient I suggest getting a low end handset, or even a Treo and configure it to run on Airtel's EDGE Networks. Airtel charges INR 500 a month for unlimited access. Orange/Hutch charge INR 600 a month for some 1GB or so and INR 0.50 per 10kb thereafter 9or something equally ridiculous, the Hutch Dog must have cost them a lot of money
Friend accesses Airtel Data on SE W800i for INR 5.00 a day, unlimited acccess (GPRS, not EDGE) but sufficient for routine small email.
Most Indian Carriers, if not all, will NOT offer support apart from what their small peripheries see. Airtel's OTA WAP/GPRS setting message supports only Nokia. If you have SE, you will have to manually configure. Thats the support you will get.
Any queries on India, you can ask here.