A:Answer We're here to help with your JBL Endurance Peak II. For us to isolate the issue, please try connecting the earbuds to other source devices and see if the issue remains. Also, please make sure to keep a clear line of sight between devices to avoid interference. Shut down unused Bluetooth devices that could interfere with the connection. Avoid concrete/brick walls that interrupt the signal. Open spaces like parks can also cause issues with Bluetooth signals. If you need more help with the unit, please get in touch with our customer support.