POCO X3 NFC Earpiece Speaker Replacement Guide (POCO X3 Pro / X3)

If you’re facing low call volume, muffled sound, or no sound during phone calls on your Xiaomi Poco X3 series, the earpiece speaker may be faulty. The earpiece speaker is responsible for call audio during normal phone use, and wear, dust, moisture, or drops can cause it to fail over time.

In this guide, we’ll show you how to replace the earpiece speaker on Poco X3, Poco X3 NFC, and Poco X3 Pro step by step. These models share a similar internal structure, making the repair process the same across all variants.

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Repair Overview

• Compatible Models: Poco X3 / Poco X3 NFC / Poco X3 Pro
• Repair Type: Earpiece Speaker Replacement
• Difficulty Level: ⚠️⚠️ Medium
• Estimated Time: 30–45 minutes
• Risk Level: Moderate

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Reasons to Replace the Poco X3 Earpiece Speaker

• Very low call volume
• No sound during calls
• Distorted or crackling call audio
• Sound only works on speaker mode or headphones
• Dust, moisture, or physical damage

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Before You Begin

Compatibility and Model Numbers

• POCO X3 NFC 
• POCO X3 
• POCO X3 Pro

Model Numbers : MZB07Z0IN, MZB07Z1IN, MZB07Z2IN, MZB07Z3IN, MZB07Z4IN, MZB9965IN, M2007J20CI, M2007J20CG, M2007J20CT, M2102J20SG, M2102J20SI

Tools Required

• Mobile phone heating pad or hairdryer/heat gun
• Plastic pry tool / card pry
• Suction cups
• Phillips #00/#000 screwdrivers
• Tweezers (for connectors)
• B7000 glue or double-sided adhesive (for back cover)
• Rubber bands or bonding clips to secure the back cover

How to Find Tools and Parts

• Heating pad – https://amzn.to/3H0tHzJ
• Portable Heat Gun – https://amzn.to/4mszih1
• Clamps https://amzn.to/3GYJT4w
• STREBITO 142 Piece Repair Tool Kit https://amzn.to/3UO1jUx
• Glue | Adhesive https://amzn.to/46exVxe
• Compatible Parts –
  • Battery – https://amzn.to/3HR26Bi
  • Screen – https://amzn.to/4mZPXsI
  • Other Parts – https://amzn.to/3HR26Bi
• Silicone Work Repair Mat https://amzn.to/45Emz5l

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Protect Your Poco X3 Series

• Protector For The Screen https://amzn.to/4gdWWw9
• Best Rated Case https://amzn.to/4fPcV3e

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Step-by-Step Poco X3 Earpiece Speaker Replacement Guide

Step 1: Power Off and Open the Device

Power off the phone completely and remove the SIM tray using a SIM eject tool.

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Step 2: Heat and Remove the Back Cover

Gently heat around the back cover edges to soften the adhesive.

• Use a heating pad (mobile heating mode), heat gun, or hairdryer

Create an opening using a suction cup and carefully slide a plastic pry tool around the edges to remove the back cover.

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Step 3: Remove the Board Frame

Unscrew 11 Phillips screws securing the board frame. Lift and remove it carefully.

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Step 4: Disconnect the Battery

Unplug the battery connector to avoid short circuits during the repair.

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Step 5: Remove the Logic Board and SIM Tray

Take out the SIM tray if not already removed.
Carefully lift the logic board from the body using a plastic pry tool and place it aside.

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Step 6: Remove the Faulty Earpiece Speaker

Apply a small amount of heat near the top of the frame to loosen the adhesive.
Carefully lift and remove the earpiece speaker from its housing.

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Step 7: Install the New Earpiece Speaker

Place the new earpiece speaker into the housing, ensuring it sits properly and aligns with the contacts.

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Step 8: Reinstall the Logic Board and SIM Tray

Place the logic board back into the body and secure it properly. Reinsert the SIM tray.

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Step 9: Reinstall the Board Frame

Place the board frame back into position and secure it using 11 screws. Reconnect the battery connector.

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Step 10: Seal the Back Cover

Check the adhesive on the back cover.
If needed, apply B7000 glue or new double-sided adhesive. Press the back cover firmly and use binding clips or rubber bands for a few minutes.

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Frequently Asked Questions (FAQ)

Q: Is the earpiece speaker the same for Poco X3 NFC and X3 Pro?
A: Yes, the earpiece speaker is compatible across Poco X3, X3 NFC, and X3 Pro.

Q: Will this fix loudspeaker or ringtone issues?
A: No. This repair only fixes call audio. Loudspeaker and ringtone issues require ringer speaker replacement.

Q: Can software cause earpiece problems?
A: Rarely. Most earpiece issues are hardware-related.

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Troubleshooting (After The Repair)

Q: Still no sound after replacing the earpiece
A: Make sure the earpiece is seated correctly and the logic board is installed properly.

Q: Call sound is distorted
A: Check for dust or adhesive blocking the earpiece grill.

Q: Phone does not power on after repair
A: Recheck the battery connector and ensure no flex cables were disturbed.

Related

• Other POCO X3 Repair Guides
• POCO X3 GT Repair Guides