A:AnswerNo, my daughter wanted this watch and thankfully the associate asked what kind of phones we had and my daughter has the 7 and told us it’s NOT compatible.
A:AnswerYes if you have the one with just gps your phone will have to be near by and the one with cellular can make calls without your phone being around.
A:Answer12 month limited warranty by Apple - Basically they will cover any problems that might arise in their hardware which is not caused by the owner.
Please note that Apple has the right to refuse service if they believe the damage caused is not under their hardware criteria.
They also provide 12 month chat and phone support for the product.
A:AnswerThis seems to be a major issue for the Apple Watch.
What helped it last longer is to delete any unneeded apps and notifications. Then make sure you don't leave your charger at home. I miss my Fitbit that lasted 5+ days.