A:AnswerThe watch will work fine without a phone. You can look at a lot of things on the face which is a good thing. But to get the most out of it overall, you will need access to a phone. Even if you just put the app on one of the household phones she can check it periodically.
A:AnswerThere is an app to change the watch face to a number of different options. Some of those faces are free and some are paid. I haven't tried to design a face and then apply it to the watch.
A:AnswerFitbit offers their own warranty and it’s the best they are easy to contact and will replace your product with a new one if needed. They even replace if you scratch the screen.