LG G6 fingerprint sensor repair guide

Your fingerprint sensor / standby button isn't working.

This repair guide shows you how to replace the fingerprint sensor of your LG G6. This fix is necessary, if your LG G6 no longer recognizes your fingerprints or your on/off button no longer works.

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
iFlex Opening Tool

iFlex Opening Tool

Opening your smartphone can be a very delicate operation, especially if the glue is very persistent. The blade of the flexible but sturdy iFlex measures just 0.15 mm, so it fits in even the smallest gaps, such as between the screen and the frame. The practical iFlex is made of stainless steel and sits comfortably in the hand. This makes it the perfect assistant for every smartphone repair.
from €10.95 on Amazon
Steel Laboratory Spatula

Steel Laboratory Spatula

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

Show all replacement parts for the G6

Getting started with the repair of your G6

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

5 steps

Switch off the device
Turn off your device by holding down the power button on the back until the “Power off” option appears.
Tap to confirm and wait until the screen goes black.
Remove back cover
To loosen the back cover, use a heat gun or an ordinary hair dryer. Warm glue is easier to loosen, allowing you to remove the back cover.
The easiest way to loosen the back cover is to use a flat and flexible tool such as the iFlex.
We also recommend inserting flat picks to prevent the glue from sticking again.

Heat the entire rear glass. It's glued all around the edges and around the home button and over the USB port.

Insert the iFlex between the rear glass and the frame, but not more than 5 mm.

Be extra careful, the back cover can break very easily. Don't pry with the tool, but only slide it around the edges. If necessary, apply the heat several times and try again. Removing the back cover might take a while. Take a little more time and work carefully to make sure you don't break anything.

Once the rear glass comes off in one place, insert a pick into the gap to keep it open.

Then run the iFlexit around all the edges to gradually loosen the glue.

The rear glass has extra glue around the home button and over the USB port. Here you need to insert the iFlexit a little deeper. But not to far, or you could damage parts on the home button.
Once the rear glass is unglued, you can lift it off. There's not cable attached.

Remove fingerprint sensor
If you only replace the rear glass, check your spare part first. It may already come with a fingerprint sensor. Then you can skip this step.
Heat the fingerprint sensor / standby button in the rear glass to soften the glue.
Then use a flat tool to release the sensor's flex cable.
The work the tool all around the sensor to separate it from the rear glass. Then take out the sensor.
Insert fingerprint sensor
Place the sensor into the opening in the rear glass.
Position the flex cable. The two holes in the cable fit on the two pins in the rear glass.
Then press on to attach the sensor and flex cable. If necessary, use hot air to soften the glue.
Attach rear glass
Place the rear glass back on the device and press it on.
You can heat the rear glass again to make the glue stick better.