A:Answer The watch is connected / sync'd to your phone via Bluetooth. If you are away from your phone (greater than 30 feet), the watch will not update. Items on the watche that will still work away from your phone are the Samsung Health Fitness items (heart rate, track steps, calories burned, and steps climbed). Once you are back in range to your phone, everything will update. NOTE: I have noticed that my phone gives me a notification "ding" when I walk within or out of range.
There is a more expensive model that has LTE but that requires an additional subscription service with your carrier.