The Oticon hearing aids disconnect from the app often, either 1 or the other or both. One will connect back but not the other and it can be either one that has problems. With both connected, when answering the phone one of them will disconnect. Use the app to pair the hearing aids and connect them to your Bluetooth then close the app. Now when I talk on the phone or listen to music it always works great as long as the app is not running.