I am planning to pickup an non contract AT&T iPhone 5 in US. I just want to make sure that this phone will work in India (I am guessing in 3G AT&T had same baseband as Airtel) but now with 4G LTE etc. Just want to make sure it will work. I am planning to get it unlocked from many sites that sell unlock codes for 10 dollars. Please let me know if this is feasible. As buying a factory unlocked phone comes out to be more expensive, and if AT&T phone can be unlocked and will work in India without any problem than I would ideally like to save the money!