A:AnswerSeeing how you have the ability to access the Google Play Store and your phone had Bluetooth I would be inclined to say yes since these are the only criteria to connect your watch.
A:AnswerThis watch will work with any phone that meets these criteria.
-Has access to Google Play store or Apples App Store
-Has Bluetooth capability
So yes the J7 meets both of these requirements.
A:AnswerYou can use it for calls without bluetooth only if you get a data enabled version. I.E. AT&T or Verizon. However if you only have the bluetooth model then no you can't.
A:AnswerThe version I purchased does not have cellular capabilities. It is compatible with any Android or iOS device. Unless you planned on using your S3 as a stand alone device, save your money and get this version.
A:AnswerThere are 2 versions of the watch. One version has connectivity thru a cell phone carrier which requires a monthly payment like your phone. The other version does not have that connectivity but will work with your phone connected via Bluetooth so if you get the latter version like I have it will connect to the phone via bluetooth.
