There are bigger, more mature markets elsewhere. Go after them. You might even get more people to use your services (maps, etc.) on a mobile than they would on a PC.
Also, $350-$400 (may be even $500 for topend) is a sweet spot for smart phones in India. And people do buy these phones in open market without a contract.
All the best. Go forth and prosper.
/an iPhone and Droid owner.