Portronics Muffs M4 — Troubleshooting Guide

TABLE OF CONTENTS

• Quick Troubleshooting
• 1. Headphones Do Not Turn On
• 2. Bluetooth Is Not Connecting
• 3. Headphones Will Not Reconnect
• 4. Bluetooth Connected but No Sound
• 5. ANC Does Not Turn On or Off
• 6. Headphones Are Not Charging
• 7. Headphones Turn Off Automatically
• 8. No Sound in AUX / Wired Mode
• 9. Music Controls Are Not Working
• 10. Calls or Voice Assistant Are Not Working
• 11. Battery Life Seems Short
• Still stuck?

Quick Troubleshooting

1. Headphones Do Not Turn On

1. Connect the Type-C charging cable to the headphones.
2. Check that the other end is connected to a working USB port or suitable charger.
3. Check whether the red LED indicates charging.
4. Allow the headphones to charge.
5. Press and hold the Power Button for about 3 seconds.

2. Bluetooth Is Not Connecting

1. Turn on the headphones by holding the Power Button for about 3 seconds.
2. Wait for the red and blue LEDs to flash.
3. Open Bluetooth settings on your phone, tablet or computer.
4. Search for Portronics Muffs M4 and select it.
5. Keep the device within approximately 10 metres during pairing.

3. Headphones Will Not Reconnect

1. Make sure the headphones are powered on.
2. Enable Bluetooth on the previously paired device.
3. Select Portronics Muffs M4 from saved devices.
4. If connection fails, choose Forget or Remove.
5. Pair the headphones again.

You can hold the Power Button while the headphones are on to disconnect the current connection before reconnecting.

4. Bluetooth Connected but No Sound

1. Confirm Muffs M4 is selected as the active audio output.
2. Increase the volume on your phone or computer.
3. Press and hold the “+” button to increase headphone volume.
4. Check that playback is not paused.
5. Confirm the source device supports the A2DP Bluetooth audio profile.
6. Restart the headphones and reconnect if necessary.

5. ANC Does Not Turn On or Off

1. Press the ANC Button.
2. Check whether the white LED turns on and a voice prompt plays.
3. Press the ANC Button again to turn ANC off.
4. Check whether the white LED turns off.

If the button does not respond, restart the headphones and try again.

6. Headphones Are Not Charging

1. Connect the Type-C cable securely.
2. Use a compatible USB port or suitable charger.
3. Check the cable for visible damage.
4. Observe the LED:
   • Solid red: charging.
   • Blue: fully charged.
5. Allow approximately 2.5 hours for a full charge.

7. Headphones Turn Off Automatically

The headphones turn off after approximately 5 minutes of inactivity to save battery.

1. Turn the headphones on again.
2. Reconnect them to Bluetooth if needed.
3. Start playback or continue using them.

8. No Sound in AUX / Wired Mode

1. Connect a compatible 3.5mm AUX cable securely to the headphones.
2. Connect the other end to the correct audio output on your device.
3. Start playback on the source device.
4. Increase the source-device volume.
5. Try another compatible audio source or AUX cable if available.

9. Music Controls Are Not Working

Use the button instructions:

• Play / Pause: press the Power Button once.
• Next Track: press “+”.
• Previous Track: press “−”.
• Volume Up: press and hold “+”.
• Volume Down: press and hold “−”.

10. Calls or Voice Assistant Are Not Working

1. Confirm the headphones are connected to your phone through Bluetooth.
2. Press the Power Button once to answer a call.
3. Press the Power Button twice to redial the last number.
4. Press and hold the Power Button to reject an incoming call.
5. Use the button marked with the microphone icon to activate the voice assistant.

Call controls may vary depending on the phone and app.

11. Battery Life Seems Short

Up to 40 hours of playtime. Actual runtime varies with volume, ANC use, connection conditions and battery condition.

1. Fully charge the headphones.
2. Test playback at moderate volume.
3. Turn ANC off when you do not need it.
4. Note the runtime if the battery drains unusually quickly.

Still stuck?

If the issue persists after performing all troubleshooting steps, please raise a support request.

Our support team will assist you further.

Support

• Visit: www.portronics.com
• Support Portal: support.portronics.com