A:AnswerYou can use the watch independently form the phone and as a phone. I believe it is eSim, but you would have to work with your carrier on how to set it up.
A:AnswerNot sure about boost, but i have mine set up with AT&T. Although it’s a superset line for the watch, it is paired with your existing cellular number.
A:AnswerNo. You can do almost everything from your watch that you can on your phone. It does, however, use a lot of battery if you did it all day. Now, just going out for a run using the app and music is not a big deal. But being able to leave your phone at home is one of the best features. It will also work with Spotify. It is a bit tougher to search and play specific music, however. Best used if you are just choosing playlists that you’ve already made.
A:AnswerThe Apple Watch Ultra, according to Apple's website, is water resistant to 100 meters and appropriate for recreational scuba diving up to 40 meters deep. It is also IPX6 dust resistant.
You don't need to do anything to prepare it for water, though you can turn on "automatic depth detection" which will automatically activate the scuba data when submerged. AFTER it's submerged though, you can use the built in water evacuation feature which will use the built
in speakers to pulse water from the ports which the standard watches have as well.
