Portronics Harmonics Z11 Pro — Troubleshooting Guide

TABLE OF CONTENTS

• Quick Troubleshooting
• 1. Headset Does Not Turn On
• 2. Bluetooth Is Not Connecting
• 3. Headset Powers Off Before Pairing
• 4. Headset Does Not Reconnect
• 5. Bluetooth Connected but No Sound
• 6. Next or Previous Track Is Not Working
• 7. Calls Are Not Working
• 8. Voice Assistant Does Not Activate
• 9. Headset Is Not Charging
• 10. Low-Battery Alert
• 11. Headset Keeps Disconnecting
• 12. Incoming-Call Vibration Does Not Alert You
• 13. Charging Seems Slow
• Still stuck?

Quick Troubleshooting

1. Headset Does Not Turn On

1. Separate the magnetic earbuds to power on the headset.
2. Check whether the red and blue LEDs flicker and the power-on voice prompt plays.
3. If there is no response, connect the Type-C charging cable.
4. Use a suitable 5V/1A USB power source.
5. Retry after charging.

The manual notes that the headset can shut down automatically if its battery voltage falls below 3.1V.

2. Bluetooth Is Not Connecting

1. Separate the magnetic earbuds to turn on the headset.
2. Wait for the red and blue LEDs to flash alternately.
3. Turn on Bluetooth on your phone.
4. Search for Harmonics Z11 Pro.
5. Select it to connect.
6. Look for the voice prompt “You are now connected”.

3. Headset Powers Off Before Pairing

If a Bluetooth connection is not made within 5 minutes, the headset powers off automatically.

1. Separate the magnetic earbuds again.
2. Open Bluetooth settings immediately.
3. Search for Harmonics Z11 Pro.
4. Select it to pair before the timeout.

4. Headset Does Not Reconnect

1. Make sure the headset is powered on by separating the earbuds.
2. Turn on Bluetooth on the phone.
3. Select Harmonics Z11 Pro from the saved-device list.
4. If the phone was out of range, bring it back within range and wait for automatic reconnection.
5. If it still does not connect, disconnect the old pairing and pair again.

5. Bluetooth Connected but No Sound

1. Confirm Harmonics Z11 Pro is selected as the audio output.
2. Increase the phone's media volume.
3. Short press Volume Up on the headset.
4. Check that playback is not paused.
5. Reconnect Bluetooth if the issue remains.

6. Next or Previous Track Is Not Working

Use the controls as follows:

• Next track: press and hold Volume Up.
• Previous track: press and hold Volume Down.
• Volume adjustment: short press Volume Up or Volume Down.
• Play / Pause: press the MFB once.

7. Calls Are Not Working

1. Confirm the headset is connected to the phone through Bluetooth.
2. Check that call audio is routed through Harmonics Z11 Pro.
3. Press the MFB once to answer a call.
4. Press and hold the MFB for about 3 seconds to reject an incoming call.
5. Double-click the MFB to redial the last number.

8. Voice Assistant Does Not Activate

1. Confirm the headset is connected to the phone.
2. Make sure the phone's voice assistant is enabled.
3. Press and hold the MFB for about 1.5 seconds.
4. Try again after reconnecting Bluetooth.

9. Headset Is Not Charging

1. Connect the Type-C cable securely.
2. Use a suitable 5V/1A USB power source.
3. Check the cable and charging port for visible damage.
4. Observe the LED:
   • Red LED stays on: charging
   • Blue LED stays on: fully charged
5. Keep the charging port dry.

10. Low-Battery Alert

The headset gives a low-battery voice prompt—“Low Battery, Please Charge”—and the red LED flashes. The prompt repeats about every 30 seconds.

1. Connect the Type-C charging cable.
2. Charge the headset using a suitable power source.
3. Wait until charging is complete before extended use.

11. Headset Keeps Disconnecting

1. Keep the phone within approximately 10 metres.
2. Reduce obstacles between the phone and headset.
3. Check whether the phone is switching to another Bluetooth device.
4. If the connection drops because of distance, return within range and wait for automatic reconnection.
5. If needed, reconnect from the phone's Bluetooth settings.

12. Incoming-Call Vibration Does Not Alert You

1. Check whether the headset is connected to the phone.
2. Confirm the phone is receiving calls normally.
3. Make sure the headset is powered on and within range.
4. If the vibration alert still does not work, note the behaviour for support.

13. Charging Seems Slow

The product listing specifies Type-C fast charging and states that 10 minutes of charging can provide up to 120 minutes of playtime under suitable conditions. Actual charging and runtime depend on battery condition and use.

1. Use a suitable Type-C cable and 5V/1A power source.
2. Check for visible damage to the cable or port.
3. Allow charging to continue and observe the LED.

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