Try these steps to resolve your issue:
Applies to:
Make sure Bluetooth® is turned on or enabled on your device
Make sure you select "Bose® Mini SoundLink®" in your device's pairing list and that the connection is confirmed by your device
Your Bluetooth® device may be out of range. Try moving it closer to the speaker
If possible, turn off all other nearby Bluetooth® devices or disable their Bluetooth® functionality
Make sure your Bluetooth® device supports the A2DP (stereo Bluetooth) profile
When connecting to a PC or Mac computer, make sure to select the Bose® SoundLink® Mini speaker as the audio output device within the audio settings menu of the device. You may need to play an audio track to finalise the connection (see the device manufacturer for detailed instructions)
Check for updated software for your Bluetooth® device, or go to owners.Bose.com for updates to the Bose® SoundLink® Mini speaker