JBL Boombox 3 won't connect to Bluetooth: fixes in order
Quick answer: Remove the Boombox 3 from your phone's Bluetooth list, turn Bluetooth off and on, restart the phone and the speaker, then press and hold the speaker's Bluetooth button to put it in pairing mode and pair it as new.
Video not loading? Open the video on YouTube. It may not match your exact model; check the written guidance and device scope before following it.
The fixes, in order
These follow JBL's own steps for pairing problems, with a couple of extra checks that catch the most common mistakes.
1Turn Bluetooth off and on
On your phone or tablet, switch Bluetooth off, wait a few seconds and switch it back on.
2Forget the old pairing
If the Boombox 3 was paired before, open your phone's Bluetooth settings, tap the speaker's name and choose Forget (iPhone) or Unpair (Android). An old, half-broken pairing is the most common reason it won't reconnect.
3Restart the phone
Turn the phone off and on again, then try connecting.
4Restart the speaker
Turn the Boombox 3 off and on with its power button.
5Put the speaker in pairing mode
Press and hold the Bluetooth button on the speaker until it's ready to pair, then open Bluetooth settings on your phone and select the Boombox 3 from the list of new devices.
6Check it isn't connected to something else
If another phone, tablet or laptop nearby connected first, the speaker may be busy with it. Turn Bluetooth off on the other devices and try again.
7Stay close and clear
Pair within a few metres, with no walls in between. Once connected you can move further away.
Still won't connect?
Try pairing a different phone. If no device can connect, contact JBL support (US: 800 336 4525) and say which of these steps you've tried. If only one phone fails, update that phone's software and repeat the steps.
What to tell support
Keep a short record of your exact device model, software or app version, the symptom or error text, and which steps you tried. Note what changed after each step. You can print this page for reference.
Do not include passwords, recovery codes or private account details in public comments.
Sources
Video by FixIt Mobile on YouTube. See the linked sources for current manufacturer guidance. Menu names and available features can vary by model and software version. How we check fixes.