A:AnswerIn the Ad specifications it does not say GSM but it does use a SIM card so it must be GSM. CDMA is the alternative but it doesn't use a SIM card.
A:AnswerHello. This link includes information on the features and design of the Galaxy S7. Thank you for reaching out to us. ^Kayla
https://www.samsung.com/global/galaxy/galaxy-s7/