Fixes for the most common Jabra BIZ 2400 II problems, from the quickest checks to when to contact Jabra. Start at the top: most issues are a setting, a cable or firmware.
Quick checks
- Restart the device: unplug power for 30 seconds, then reconnect.
- Reconnect the cables, using the ones that came in the box.
- Update the firmware. How
No sound, or people can't hear you
- Check the mute button or mute light on the device and in the app.
- In Teams, Zoom or your softphone, select this device as both microphone and speaker.
- For wireless models, make sure it's connected to the dongle or phone you think it is.
- Update the device firmware and the app.
Bluetooth or dongle won't pair
- Put the device in pairing mode and remove the old pairing from your phone or computer first.
- Plug the USB dongle directly into the computer, not a hub.
- Re-pair the dongle using the manufacturer's desktop app.
- Charge it fully: low battery can prevent pairing.
Keeps disconnecting or drops out
- Update firmware.
When to contact Jabra
If none of this works, the device may need warranty service. Open a case on Jabra support. Bought from us? Contact us and we'll help with the claim.
More BIZ 2400 II guides
- BIZ 2400 II buyer's guide: specs and price
- BIZ 2400 II: setup guide
- BIZ 2400 II: full specs
- BIZ 2400 II: alternatives compared
- All Jabra business headsets compared
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