I downloaded 6.0 a couple of weeks ago on Verizon. In the past few days it has been randomly disconnecting. First my Ford Sync, then my desk speaker and now from my Gear S. Most of the issues are with my watch which can connect and reconnect 5 times in a couple of minutes. Killing battery on both. Spent an hour with a Verizon tech and they are sending a replacement phone. Just wondering if I should keep it on lollipop. I never had any issues before and frankly see no big deal with Marshmallow.