A:AnswerYes and no. You need the iPhone to set up the watch, and you need a cellular phone plan to which you will add a wearable. Once you are all set up, you can leave the phone at home and still get your emails, texts and such using the cellular connection. With the GPS only version, you would need to have the phone within Bluetooth distance, or the watch needs to be able to connect to a previously used Wifi network, in order to do emailing, texting, etc,
A:AnswerI bought the wrong one when I was in the store and was able to exchange it right away. If yours is coming to your house I would recommend not opening it that way you can take it to a store location and see if they’ll exchange it. I don’t believe they’d have any issues doing that.
A:AnswerNot a direct trade per say but you can trade in your watch for a Best Buy card which can be used to purchase the new watch. I traded in my old iPhone to buy the watch .
A:AnswerIf within range if your phone or WiFi it will but if wAtch is standalone and not LTE it will not. So if you have it in range of your iPhone you are good