One drawback in India Cellphone Providers is that there is no websms service.

So if you are looking to send sms to India from your cellphone in US then you can check with your service provider on what would be the ideal code and way before sending an sms.

Otherwise, there are other ways where you can try to send sms from your PC or internet.This could be done by following instructions on all those FreeSms sites on web.However, there is no guarantee that they do reach to the person you want to send.