I discovered something interesting about using a Galaxy S7 Edge with a 2015 Macbook... up to just recent, I was using my iphone 6S plus as my mobile hotspot and was always bothered by the fact that my Macbook would never automatically connect to my phone. I always have to manually connect it, even after my Macbook screen goes off, I still have to manually connect. Now that I have the S7 Edge, my Macbook automatically connects quickly and stays connected even when my screen goes out. I thought it was weird that the S7 can do that but not the iphone (which I assumed would work perfectly with the Macbook).