A:AnswerI am not sure how much use you could get out of the watch if you do not have an iphone. All the features are within the phone such as notifications. You cannot even change the face of the watch without being on the phone. Hope that helps!
A:AnswerAs long you are on the same wifi network as your phone, you can be anywhere in the building and receive calls and text. The watch has its own fitness tracking, but I believe the fitbit app is accessible as long as it on your phone.
A:AnswerThe Apple Watch series 3, GPS does not require a data plan. You will log in to your Apple ID on your watch so it connects to your phone and the data plan that you use on your phone. If you want your Apple Watch to work away from your phone, you can buy the Apple Watch series 3, Cellular. The Cellular Apple Watch does require you to purchase a cellular data plan with it.
A:AnswerYes you can. There are multiple sleep tracker apps in the App Store to help you keep track of hours slept, HR, etc. When you wear it to bed, your alarm will come through the watch as well. The subtle vibration surprisingly does a great job waking me up.
A:AnswerThere is a quick release notch on the backside of the watch. One above and one below the heart rate sensor. Depresss this notch with your fingernail and slide the band right off. Might take some wiggling during your first attempt.