LG K40S Fingerprint Scanner Replacement
Use this guide to replace the fingerprint scanner in your LG K40S
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Power off your phone by holding the power key, pressing power off, then confirm.
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Use a SIM Eject tool (real one, bent paperclip or otherwise) to eject the 2 SIM & SD Card trays before removing them from the phone.
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The back panel is made of plastic significantly reducing the chance of breakage compared to a glass back.
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The back panel is held on with plastic clips and can be unclipped using plastic picks.
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Open the back panel to the right as shown in image 1.
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Disconnect the fingerprint scanner flex cable using a plastic pick or spudger
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Pull the back panel away from the phone.
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Carefully remove the black tape covering the fingerprint scanner using your fingers or a plastic pick, being careful not to insert your pick too far if using one.
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Carefully push the fingerprint scanner through the back panel.
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Use a plastic pick to carefully unadhere the flex cable from the back panel.
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Pull the fingerprint sensor away from the back panel.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
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