I'm using the galaxy S5 Active and the Gear 2. They work great together. Just in case you all don't know (if you're new to gear), you can only use S Voice to answer texts if you use the stock messaging app. Just the way it goes I guess but I absolutely wanted that capability so I adjusted. I've been using the Gear since the first one and love them. I still think they're the best looking smart watch out there and if you do your homework, you'll also discover they have the most functionality. Some of the others may allow you to install more apps but many don't have the ability to make/receive calls or maybe to store and play music. Anyway, I love my Gear 2 and will stick with it for as long as they make them.