Samsung Galaxy M31 Back Cover & Fingerprint Sensor Replacement

はじめに

Use this guide to remove the back cover and the fingerprint sensor on your Samsung Galaxy M31.

You’ll need replacement adhesive to reattach the fingerprint sensor when reassembling the device.

必要な工具と部品

手順1 Remove SIM Card Tray

Samsung Galaxy M31 Back Cover & Fingerprint Sensor Replacement, Remove SIM Card Tray: 手順 1、 3の画像 1

Samsung Galaxy M31 Back Cover & Fingerprint Sensor Replacement, Remove SIM Card Tray: 手順 1、 3の画像 2

Samsung Galaxy M31 Back Cover & Fingerprint Sensor Replacement, Remove SIM Card Tray: 手順 1、 3の画像 3

Insert a SIM card eject tool, a SIM eject bit or a straightened paper clip into the hole on the SIM tray located at the left side of the phone.
Press firmly to eject the tray.

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手順2

Samsung Galaxy M31 Back Cover & Fingerprint Sensor Replacement: 手順 2、 3の画像 3

Insert an opening pick between the phone assembly and the back cover at the bottom edge of the phone.
Slide the opening pick around the bottom right corner to release the clips holding the back cover in place.

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手順3

Insert a second opening pick between back cover and the phone assembly at the bottom edge of the phone.
Slide the opening pick around the bottom left corner to release the plastic clips holding the back cover in place.

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手順4

Slide the opening pick along the left side of the phone to release the plastic clips on the left side of the back cover.

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手順5

Slide the opening pick along the right side of the phone to release the plastic clips on the right side of the back cover.

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手順6 Remove Back Cover

Samsung Galaxy M31 Back Cover & Fingerprint Sensor Replacement, Remove Back Cover: 手順 6、 3の画像 1

Samsung Galaxy M31 Back Cover & Fingerprint Sensor Replacement, Remove Back Cover: 手順 6、 3の画像 2

Samsung Galaxy M31 Back Cover & Fingerprint Sensor Replacement, Remove Back Cover: 手順 6、 3の画像 3

The flex cable of the fingerprint sensor is very short and the sensor is likely to disconnect itself during the following removal procedure. Avoid damaging the cable by removing the back cover too quickly.
Carefully lift the phone assembly out of the back cover.
During reassembly, this is a good point to power on your phone and test all functions before reinstalling the back cover. Be sure to power your phone back down completely before you continue working.

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手順7 Soften Fingerprint Adhesive

Samsung Galaxy M31 Back Cover & Fingerprint Sensor Replacement, Soften Fingerprint Adhesive: 手順 7、 1の画像 1

Apply a heated iOpener to the back of the phone where the fingerprint sensor is located to loosen the adhesive underneath. Apply the iOpener for at least two minutes.

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手順8

Samsung Galaxy M31 Back Cover & Fingerprint Sensor Replacement: 手順 8、 3の画像 3

Slide an opening pick underneath the edge of the fingerprint reader.
Slide the opening pick around the edge of the fingerprint reader to cut the adhesive underneath.

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手順9 Remove Fingerprint Sensor

Samsung Galaxy M31 Back Cover & Fingerprint Sensor Replacement, Remove Fingerprint Sensor: 手順 9、 2の画像 1

Samsung Galaxy M31 Back Cover & Fingerprint Sensor Replacement, Remove Fingerprint Sensor: 手順 9、 2の画像 2

Remove the fingerprint reader.

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終わりに

To reassemble your device, follow these instructions in reverse order. Apply new adhesive where necessary after cleaning the relevant areas with isopropyl alcohol (>90%).

Secure the fingerprint sensor with pre-cut adhesive or double-sided adhesive tape during reassembly.

Removal didn’t go as planned? Try some basic troubleshooting, or ask our Answers community for help.

6 の人々がこのガイドを完成させました。