Clear your Bose product memory of previously-connected Bluetooth® devices.
Your Bose product remembers the last several devices it connected to so it can quickly reconnect to them. In case there is an issue with the device memory, clear it and then try to reconnect the device. For more info, see Clearing the product memory of paired Bluetooth® devices
and Connecting a Bluetooth® device
On the Bluetooth® device, remove all entries of your Bose product from the Bluetooth menu. Then, try connecting again.
In the Bluetooth menu of the Bluetooth device, you'll find a list of Bluetooth products that have been previously connected. Your Bose product might show up one or more times in the list (i.e. it might be listed a second time with "LE" in the name). Select each entry for your product and remove it by selecting Forget
or something similar. After, try connecting again. For more info, see Connecting a Bluetooth® device
Check the cellular reception of your phone.
A weak connection to the cell service could cause poor audio quality while on a call. Try the call again when the reception improves.
Try playing different types of media.
Different media types might produce different quality sound. For example, Podcasts, music stored locally on your phone, MP3s, streaming music services (Spotify, Pandora), videos on your device or stored in the cloud, etc. can all vary in quality. Try different media to determine if the issue is specific to certain media.
Try a different app.
If the issue only occurs with a particular app, it is likely related to the app or app settings.
Your product may need service.
If the steps provided do not resolve your issue, your product may need service. Follow the link below for more information on how to service your product. Depending on your product and region, you will be provided a contact number or the ability to setup service online.
Click here to start service