Summary: So far it works pretty well with my Note 3, but sadly it cannot unlock the phone as I do not own a Galaxy S5 which I guess is required for that feature. The weather app clock can be a bit off sometimes, but it is comfortable, and can tell the time even when disconnected from the phone. The heart rate monitor seems accurate, and there are a few extra apps you can get from the play store which add some nice tricks to the watch (flashlight, app launcher, Etc...).
Summary: Although I believe I would like it, possibly love it, I will never know. Because although the site says it works with the Samsung Galaxy 3, it doesn't. When I tried to install the manager app to my phone it had a parsing error. After taking it to Best Buy to have them set it up, they tried and discovered that though the site said it would, upon trying they were given a notice saying that it would not work with the Galaxy 3. You must have a Galaxy 4 at least to use it.
Summary: THIS WATCH IS AMAZING!!! I got this for my boyfriend for Christmas and it's absolutely perfect! He gets so many compliments on it and everyone is so jealous. For the price it was even greater. Everyone wants one soo bad but we all have iphones. PLEASE MAKE ONE THAT IS AVAILABLE FOR IOS! I am considering getting a droid just for this watch, But I love my iphone. No other watch is a simple, nice looking, smart fitness watch.