Fixing Bugani M90 Bluetooth Not Working Problem (2026)

The Bugani M90 Bluetooth not working issue is almost always caused by the speaker being stuck on a previous pairing, a drained battery, or the speaker not being in pairing mode. The fix is usually straightforward: clear the old pairing, force the speaker into discovery mode, and reconnect. Below is every proven fix, starting with the one that works for most people.

Bugani M90 LED Indicator Reference

Before troubleshooting, check what the LED on your M90 is doing — it tells you exactly what state the speaker is in.

LED Behavior	Meaning
Flashing blue	Pairing mode — speaker is searching for a device
Solid blue	Successfully connected to a Bluetooth device
Red (solid)	Charging in progress
LED off (while plugged in)	Battery fully charged
No LED at all	Speaker is off or battery is completely dead
Rapid blue flash after holding Play button	Bluetooth connection has been reset

If you are not seeing the flashing blue light when you power on the M90, the speaker is likely auto-connecting to a previously paired device. That is the most common cause of the “Bluetooth not working” problem — it is working, just connecting to something else.

Method 1: Reset the Bluetooth Connection and Re-Pair

This solves the problem for the majority of users. The M90 remembers the last device it connected to and will auto-connect to it on power-up. If that device is nearby (a laptop, tablet, or another phone), the speaker connects to it instead of yours.

Turn on the Bugani M90 by pressing the Power button.
Press and hold the Play/Pause button for 5 seconds until the LED indicator starts flashing blue rapidly. This clears the speaker’s stored Bluetooth connection.
On your phone or tablet, go to Settings → Bluetooth and look for any existing “M90” or “Bugani” entry in your paired devices list.
Tap the info/settings icon next to it and select Forget This Device (iOS) or Unpair (Android).
With the M90 still in pairing mode (flashing blue), pull down your phone’s Bluetooth device list and tap M90 when it appears.
You should hear a confirmation tone from the speaker and the LED should turn solid blue.

If the speaker still does not appear in your Bluetooth scan, power it off completely, wait 10 seconds, then power it back on and repeat step 2. Some phones also need Bluetooth toggled off and back on before they will detect new devices.

Method 2: Charge the Speaker

A low or completely drained battery can prevent the Bluetooth radio from functioning, even if the speaker appears to turn on. The M90 has a 5,200 mAh battery that charges via Micro USB (not USB-C).

Insert the Micro USB cable into the charging port on the back of the speaker.
Connect the other end to a wall charger rated at 5V/1A or higher. Avoid charging from a laptop USB port — the lower amperage can result in extremely slow or incomplete charging.
The red LED will turn on to indicate charging. When the battery is full, the LED turns off.
Let the speaker charge for at least 2–3 hours before attempting to pair again.

If the red LED does not turn on when you plug in the cable, try a different Micro USB cable. These cables are notorious for developing internal breaks, especially at the connector end. A damaged cable is one of the most commonly overlooked reasons for charging and Bluetooth issues on the M90.

Buy Micro USB Replacement Charging Cable for Bugani M90 on Amazon

Method 3: Force the Speaker Out of AUX Mode

The Bugani M90 supports three input modes: Bluetooth, AUX (3.5mm cable), and TF/microSD card. If an AUX cable was previously plugged in, the speaker may have switched to AUX mode and stayed there even after the cable was removed — or the AUX port’s internal switch may be stuck.

Insert a 3.5mm AUX cable into the AUX port on the back of the speaker.
Wait 3–5 seconds. The LED should turn red, indicating AUX mode is active.
Remove the AUX cable. The LED should begin flashing blue, indicating the speaker has switched back to Bluetooth mode.
If it does not switch back automatically, press the Mode button (if your model has one) or power cycle the speaker after removing the cable.

This AUX port workaround has been reported by multiple users as the fix when the speaker appears powered on but refuses to enter Bluetooth pairing mode.

Method 4: Use the Hidden Reset Button Inside the AUX Port

If the speaker is completely frozen — it will not turn off, the LED is stuck, and no buttons respond — there is a physical reset button hidden inside the AUX port.

Power off the speaker if possible (long-press the Power button for 3–5 seconds).
Get a straightened paperclip, SIM ejector tool, or safety pin.
Insert it straight into the AUX port, angling slightly toward the top of the port. You should feel a small tactile click when you hit the reset button.
Hold it for 3–5 seconds, then release.
Power the speaker back on. It should enter pairing mode (flashing blue LED) as if it were brand new.

This is a full factory reset. The speaker will forget all previously paired devices, so you will need to pair everything again from scratch.

Method 5: Multi-Button Hard Reset (For Frozen or Unresponsive Speaker)

If the speaker is completely unresponsive and the AUX port reset did not work, try a multi-button forced reset.

Option A: Press the Power button 5 times rapidly, then on the 5th press, hold it down for 3 seconds.

Option B: Press and hold all four buttons simultaneously (Power, Bluetooth/Play, Volume Up, Volume Down) for 5 seconds, then release.

After either method, the speaker should power down. Wait 10 seconds, then turn it back on. It should boot into pairing mode with the blue LED flashing.

Method 6: Move Within Bluetooth Range and Remove Interference

The Bugani M90 uses Bluetooth 5.0, which has a theoretical range of up to 100 feet (30 meters) in open air. In practice, walls, furniture, other wireless devices, and even your own body significantly reduce this range. Wi-Fi routers operating on the 2.4 GHz band are particularly problematic because Bluetooth also uses 2.4 GHz.

To rule out range and interference issues:

Place the speaker and your phone side by side (within 3 feet) and attempt to pair.
Move away from Wi-Fi routers, microwaves, and other Bluetooth devices.
If you are in a crowded environment with many active Bluetooth devices (gym, office, coffee shop), the 2.4 GHz band may be too congested. Try pairing in a quieter location first, then move back.

If the speaker connects fine at close range but drops out at moderate distance, the issue is environmental interference, not a hardware defect.

Method 7: Check Your Phone’s Bluetooth Settings

Sometimes the issue is on the phone side, not the speaker. These steps apply to both Android and iOS.

On Android:

Go to Settings → Connections → Bluetooth.
Make sure Bluetooth is toggled on.
Tap Scan or pull down to refresh the list of available devices.
If you see “M90” listed under “Previously Connected” or “Paired Devices” but it shows as disconnected, tap it to reconnect. If it fails, tap the gear icon and select Unpair, then scan again.

On iPhone/iPad:

Go to Settings → Bluetooth.
If you see “M90” listed under “My Devices” and it says “Not Connected,” tap it to reconnect.
If that fails, tap the i icon next to it and select Forget This Device, then wait for the speaker to reappear under “Other Devices” and tap it.

Additional phone-side fixes:

Toggle Airplane Mode on and off to reset all wireless radios.
Restart your phone entirely. This clears the Bluetooth stack and resolves many pairing issues.
On Android, go to Settings → Apps → Bluetooth (or Bluetooth MIDI Service) and clear the cache.

Method 8: Verify the Speaker Is Not Connected to Another Device

The Bugani M90 can only maintain one active Bluetooth connection at a time. If someone else’s phone, a laptop, or a tablet previously paired with the speaker is within range and has Bluetooth enabled, the M90 may be auto-connecting to that device instead of yours.

Check all nearby devices (laptops, tablets, other phones) and either turn off their Bluetooth or forget the M90 from their Bluetooth settings.
Once all other devices are disconnected, power cycle the M90 and re-pair using Method 1 above.

This is especially common in households where multiple people have paired with the same speaker.

When to Contact Bugani Support or Consider a Replacement

If you have tried every method above and the speaker still will not connect to any Bluetooth device, the Bluetooth module inside the speaker may be defective. This is uncommon but can happen, particularly with units that have been exposed to moisture beyond the speaker’s IPX7 rating (submerged deeper than 1 meter or for longer than 30 minutes).

Bugani offers support through their official website and Amazon seller page. If your speaker is still within the warranty period, contact them for a replacement. If the speaker is out of warranty, a replacement Bluetooth speaker at a similar price point may be more practical than attempting a repair.

Replacement and accessory links:

Bugani M90 Technical Specifications

Spec	Detail
Audio Output	30W Stereo (dual drivers + twin bass radiators)
Bluetooth Version	5.0
Wireless Range	Up to 100 feet (30 m) line of sight
Battery	5,200 mAh lithium-ion
Playtime	Up to 24 hours at moderate volume
Charging Port	Micro USB (5V/1A recommended)
Charge Time	Approximately 3–4 hours
Water Resistance	IPX7 (submersible up to 1 meter for 30 minutes)
Inputs	Bluetooth, AUX (3.5mm), TF/microSD card
Built-in Mic	Yes (hands-free calling)
USB Output	Yes (can charge other devices as a power bank)
Dimensions	10.6 × 3.8 × 6.2 inches
Weight	3.85 lbs