A:Answer Hello,
GPS is dedicated to helping you for find your way around, analyzing your heart rate, stress levels, and other fitness metrics. Additional features include music storage, Bluetooth technology for syncing with other mobile devices.
An unlocked mobile device (phone, watch, tablet) is a device that is not exclusively tied to a particular mobile carrier such as AT&T, T-Mobile, Sprint, Verizon, etc. For example, if you purchased a phone or mobile device from Apple (manufacturer) that is unlocked, it is your choice to choose your own carrier for service.
Hope this helps!