A:AnswerYes, it works great. You don't have to have your cell phone even with you. It works as a stand alone, you just need to forward your cell number to your Samsung watch (may need to be with Verizon).
A:AnswerYes, it connects via Bluetooth/ wifi. This version is better because it has a built in speaker unlike the non-cellular version. Speaker is a must have! I enjoy using this whilre driving my car with Bluetooth synced to my phone.