Samsung Galaxy S8+ fingerprint sensor repair guide

The fingerprint sensor no longer recognizes your fingerprint.

This repair guide shows you how to replace the fingerprint sensor of your Galaxy S8 Plus. This fix is necessary, if your Galaxy S8 Plus no longer recognizes your fingerprints or doesn't let you register new fingerprints.

Required tools

Flat Picks

Flat Picks

You need a very flat tool such as a flat pick to pry out parts that are glued in place.
from €11.95 on Amazon
Heat gun

Heat gun

You can use a heat gun to heat parts that are glued on so they’re easier to remove. In most cases, you can also use a hairdryer.
from €15.99 on Amazon
Steel Laboratory Spatula

Steel Laboratory Spatula

You need a flat and sturdy prying tool to disconnect glued parts.
on Amazon

Required replacement part

Samsung Galaxy S8 / S8+ Fingerprint Sensor

Samsung Galaxy S8 / S8+ Fingerprint Sensor

from €10.98 on Amazon

Show all replacement parts for the Galaxy S8+

Steps

6 Steps

Switching off your device

Step 1

Removing the back cover

Step 2

Disconnecting the fingerprint sensor

Step 3

Removing the fingerprint sensor

Step 4

Inserting the fingerprint sensor

Step 5

Attaching the back cover

Step 6

Getting started with the repair of your Galaxy S8+

If you get stuck or have questions, you can post a comment. We’d be happy to help.

6 steps

Switching off your device
Turn off your device by holding down the power button until the “Power off” option appears.
Use your finger to confirm that you want to shut down your Galaxy S8 Plus and wait until the screen goes blank.
Removing the back cover
The back cover’s really glued to the chassis. Heat the device evenly with hot air to soften the glue.
Then carefully try to lift the rear glass using a flat, blunt tool. It’s best if you find a loose spot where you can insert the first pick. Then work your way around the device step by step.
Use a suction cup to lift the glass if you can’t find anywhere to insert the toolThis step can take a pretty long time. You may have to heat the rear glass or the glue a few more times before you can finally detach itDon’t take off the back cover all the way because you have to disconnect the connector for the fingerprint reader first.
Disconnecting the fingerprint sensor
After detaching the back cover, carefully lift it and disconnect the fingerprint sensor using the spudger.
Then you can completely remove the back cover and set it aside.

Removing the fingerprint sensor
Carefully slide in a steel spatula where the wireless charging coil is glued to the NFC antenna and pry off the contact.

Now slowly remove the entire flex cable from the cover.

If the cable is hard to remove, you can use a heat gun to soften the glue
The images show the rear panel of a Galaxy S8. The Galaxy S8 Plus has the same glass panel.
Inserting the fingerprint sensor
Insert the fingerprint sensor into its intended position in the back cover.
Slightly press down the sensor to make it stick.
Attaching the back cover
Put the back cover back in its original position.
Connect the fingerprint sensor again.
Press the back cover on all over so the glue will stick.
You can also heat your device with hot air and then clamp it or weight it down with a couple books so the glue will stick better.