A:AnswerNo, unfortunately from everything I have read none of the prepaid companies (Straightalk, Total Wireless, etc.) are set up for the cellular Series 3. Hoping that will change in the future.
A:AnswerYou will need apple device to activate it. Its more so a apple companion not ment to use with other devices. However I believe it can be used as a stand alone but activating it requires apple device, sim card is embedded in watch so carrier will have to add it to plan as well.
A:AnswerJust take the watch into your service provider and they will resolve the problem. Have had similar issues with other devices and ATT has been great at getting the proper account settings.
A:AnswerYes, you only pay $20.00 a month until it is paid off. Keep in mind that you will also pay for the cell service for the watch if you get that particular model.Then you only pay the activation fee at the time of purchase. The price varies according to your wireless provider. I hope that helps. If you get the Apple Watch protection that is an additional fee as well.