Can I use my US-based cellphone in India???
The usual cell phones used in USA are CDMA-based and hence you cannot use it in India.But if you have the tri-band phones which both AT&T and T-Mobile are using by default can be used in India if it is a Tri-band phone.Hence the new handset can be used anywhere in the world where GSM is used.I personally prefer the GSM technology over CDMA simply because it is used in more then 170 countries and hence your handset can work in some many places compared to CDMA which can only work in US and probably Canada. Currently I use pre-paid cell phone service from .There is no recurring monthly fees,no service charges, and no contract. Also if you are buying a new cell-phone please consider donating your old cell-phone to Support Network for Battered Woman or Wireless Foundation.