I wanted to migrate from my current company as it gives really poor service and also the cost is high.Can you guys tell me which
is the best service provider? I reside in India.
There are various 2G internet service providers in India namely Tata Docomo, Vodafone, Airtel, BSNL, Reliance.
 Airtel has good network coverage and internet can be accessed in remote areas. Good customer service and high speed connection if you live in a city. It is costlier as compared to rest of the service providers. Idea gives good internet experience and is reliable. Their network coverage is good.  Reliance has moderate internet speed and good service. Can't expect strong network coverage in Remote areas. Tata Docomo gives the best internet speed. It has the fastest internet among all other networks. Docomo has cheaper internet plans as well. But their customer service is not up to the mark. Vodafone can give competition to Docomo in terms of Network speed and coverage. BSNL has the good network coverage next to Airtel and also has cheaper internet plans. But its internet speed is not up to the mark.
Personally I would rely on Airtel for their connectivity, speed and customer service.
