Samsung Galaxy A13 Fingerprint Sensor Replacement Guide

Hi everyone, welcome back to DIYGeardo.

Today, we’ll show you how to replace the fingerprint sensor on the Samsung Galaxy A13 4G mobile phone.

If the fingerprint sensor is not responding, fails to recognize fingerprints, or stops working after a drop or repair, replacing the fingerprint sensor flex is the most effective solution. In this guide, we’ll walk you through the complete replacement process step by step using safe disassembly techniques.

Before starting, make sure the phone is powered off and you have the right tools, which you can find linked in the description.

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Estimated Repair Time

⏱ 15–25 minutes

Repair Difficulty

🛠 Easy

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Compatibility and Model Numbers

This repair guide based on Samsung Galaxy A13 4G device, but it also compatible with Galaxy M13 4g and Galaxy F13 models.

Compatible Mode Numbers l SM-A135F, SM-A135F/DS, SM-A135M, SM-A135U, SM-A135U1, SM-A135N, SM-A137F, SM-A137F/DSN, SM-A137F/DS, SM-M135F, SM-M135F/DSN, SM-E135F, SM-E135F/DS

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Before You Begin

Required Tools

• Heating pad / heat gun / hairdryer
• Suction cup
• Plastic card pry tools / opening picks
• Phillips screwdriver
• Adhesive (B7000 or double-sided back cover adhesive)
• Bonding clips or rubber bands (optional but recommended)

Make sure the phone is turned off and the SIM tray is removed before starting.

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/4mwa41Z
  • Screen – https://amzn.to/4n0XV4X
  • Other Parts – https://amzn.to/41lzman
• Silicone Work Repair Mat https://amzn.to/45Emz5l

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Step-by-Step Repair Instructions

Step 1: Power Off & SIM Tray

First, turn off the phone completely.
Remove the SIM tray and prepare the device for back cover removal.

Step 2: Remove the Back Cover

Create a small gap near the SIM slot or charging port using a picker or plastic card pry tool.
Insert the pry tool and gently move around the phone to release the plastic clips on the frame.

⚠️ Be gentle while lifting the back cover, as the fingerprint sensor flex is attached.

Step 3: Remove the Board Frame

Undo the screws securing the board frame and carefully lift it out of the phone.

Step 4: Remove the Faulty Fingerprint Sensor

Disconnect the fingerprint sensor flex cable from the board.
Carefully remove the faulty fingerprint sensor from the back cover.

Step 5: Install the New Fingerprint Sensor

Place the new Galaxy A13 4G fingerprint sensor into position on the back cover.
Ensure the sensor is properly aligned and the flex cable is routed correctly.

Step 6: Reinstall the Board Frame

Reconnect the fingerprint sensor flex if required.
Place the board frame back into position and secure it with screws.

Final Step: Close the Phone

Snap the back cover into place and press around the edges to secure all clips.
Insert the SIM tray, power on the phone, and test the fingerprint sensor.

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FAQs

1. Is the fingerprint sensor separate from the power button on Galaxy A13 4G?
Yes. The fingerprint sensor is rear-mounted and separate from the power button.

2. Will fingerprint data remain after replacing the sensor?
No. You will need to re-register fingerprints after replacement.

3. Can a damaged fingerprint flex cause battery drain?
In rare cases, a shorted flex cable may cause abnormal power usage.

4. Are Galaxy A13 4G and A13 5G fingerprint sensors interchangeable?
No. They use different connectors and are not compatible.

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Troubleshooting Fingerprint Sensor After the Repair

1. Fingerprint not detected after replacement
Ensure the fingerprint flex cable is fully connected and seated correctly.

2. Fingerprint option missing in settings
Reboot the phone and recheck the flex connection.

3. Sensor works intermittently
Make sure the sensor is aligned correctly and not pressed unevenly against the back cover.

Related Repair Guides

• View Other Samsung Galaxy A13 Repair Guides
• If you have a Galaxy A13 5G, Click Here