Awful app, it is clear that their sound design standards didn't rub off to the app design standards. if you close your headphones, god forbid, and then turn them on again after a day/ few hours you can't connect again to them, you must delete all app data in order for it to be able to connect to the headphones again. This happens while they are connected to my phone and playing music, so no problem with the Bluetooth. It isn't able to connect to headphones if location services isn't working.