A:Answer Hello Patty, thanks for asking! Samsung has Bluetooth and LTE smart watches. This watch only has Bluetooth connectivity. The LTE version can receive calls and messages without being connected to a phone. However, you'll first need to activate service for your watch through the same carrier as your mobile phone. Don't worry, AT&T, Sprint, T-Mobile, and Verizon all offer plans for the LTE versions of Galaxy Watch. ^Elizabeth