A:AnswerThe watch is more like a remote for your phone. You don't have to add it to your plan, your phone just has to be within bluetooth range. Like how you can place a call with your AirPods.
A:AnswerThe WiFi and cellular watch can make calls. The WiFi one relies on your phones connection to make the call while the cellular one can be activated and given its own service line as if it was its own device
A:AnswerYes. If you wear it to sleep, it monitors your vitals and gives sleep analysis in the morning. I’ll add photos so you can see what it looks like. Tracks sleep cycles, time asleep, etc.
A:Answeryes if you push the water protection button. I went into the pool with it and stayed there for 3 hours without any issues. don't recommend it at the beach.
A:AnswerI bought an open box. You are still able to purchase protection at the counter. Also, like usual you can purchase apple care which I would always recommend!