I'm traveling to India (from USA) in 2 weeks, and will be staying for approximately 3 months. I have an iPhone, with a Verizon plan. I would like to make my phone serviceable in India, for both international and local calling - at affordable rates. Thanks for any advice.
Get a local SIM card, they're cheap and calls back home are cheap too. You'll get a different number so make sure everyone knows what it is, but it'll be hundreds of times less expensive than global roaming.
India has a very mature cell phone network and the competition means prices are very low. You can get SIM cards just about anywhere! almost 5 years ago