I really wanted a smart watch to use for health monitoring as I’m on new blood pressure medication, and I recently went back to work after being retired for 7 years, so I wanted to track my steps as well. For reference I am unskilled when it comes to technology, so I was a little nervous, but this was very easy to pair with my iPhone. I haven’t had any problems with the pedometer, BP monitor, Pulse, O2 reader, sleep tracker, or weather. Just down load the app to your phone and pair your watch. If you lose the weather app on the watch, open the app on your phone, there’s a watch symbol on the top right corner, tap that and it should re-sync. I haven’t tried calls thru my watch or music, I really do not want to use that as I’m at work, so I put my watch on Do Not Disturb to prevent calls from forwarding thru, it’s very easy to use and I think some of the other reviews are operator error, the instructions are clear as mud lol, but it’s easy to use common sense if you posses it, if you don’t, find a 12 year old to fix you up, they’re way more in tune lol!