A:AnswerI believe so. I use mine in the states but i did some research and see people using the same device in other countries as well including Brazil.
A:AnswerIf you buy the unlocked version of the phone it should work fine. (Unlocked meaning its compatible with any carrier) Just insert your old sim into the new phone and follow the steps.
A:AnswerI believe it will work in India as well yes. I got this phone and got on the Google Fi network using the e-sim and the physical sim slot is empty and could be used for a local sim card.