Try the following steps to resolve your issue:
Applies to:
Your Bluetooth® device may be out of range. Try moving it closer to the Bose® SoundLink® Mini speaker
Move your Bluetooth® device away from any device that generates electromagnetic interference, such as another Bluetooth® enabled device, cordless phone, microwave oven or wireless router
Reduce the number of applications running on your Bluetooth® device. Running multiple applications can reduce the amount of internal resources available to transmit audio. Closing non-essential applications may improve audio quality
Try turning off Wi-Fi® to improve audio quality
Try clearing your Bluetooth® device from the Bose® SoundLink® Mini speaker by disabling Bluetooth® on your device. Pair the device and speaker again
Turn the speaker off and back on
If your Bluetooth® device is in your pocket, try placing it in open air, without your body between the device and the speaker
Check for updated software for your Bluetooth® device and the Bose® SoundLink® Mini speaker