I wonder if anyone else had this experience. I recently received my replacement Charge HR. Since this would be my third one, I hadn't ever had any problems adding devices to my account. I deleted the previous device from my account and attempted to sync the new one. No matter what, it does not find my Fitbit. I tried resetting the Fitbit, I tried restarting my phone, I tried deleting the app and installing it again...none of it worked. However, when I sync my Fitbit to my iOS device, I have zero problems. So I'm certain it's not a problem with the tracker itself. Since I've never had problems with my phone (Samsung Galaxy Note 4, Android 6.0.1), I wonder if there's a setting that may be causing this issue. I don't think anything is different, but I'd really like to be sure. My phone is my primary Fitbit syncing device. It would be unfortunate to defer to my iPad all of the time.