Nokia 3.1 Display Assembly Replacement

はじめに

This guide walks you through the process of replacing a cracked display of a Nokia 3.1 smartphone. You will need some patience while removing the back cover as it might be hard to open it up at first. Also disassembling the display itself needs some patience as you will need to heat it up.

必要な工具と部品

手順1 Battery

Nokia 3.1 Display Assembly Replacement, Battery: 手順 1、 1の画像 1

First, remove the SIM and SD card trays.

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手順2 Open the back cover

Nokia 3.1 Display Assembly Replacement, Open the back cover: 手順 2、 3の画像 1

Nokia 3.1 Display Assembly Replacement, Open the back cover: 手順 2、 3の画像 2

Nokia 3.1 Display Assembly Replacement, Open the back cover: 手順 2、 3の画像 3

この手順で使用する道具：

Plastic Cards

$2.99

購入する

Try to use a thin tool like a razor blade to start to pry open the back cover.
When you opened it up just a little bit put a plastic card or a plastic opening tool inside the gap.
Using the plastic tool slowly make your way around the back cover. You can also use a guitar pick or similar.
Hint: the back cover is attached to the body with several plastic noses as well as a thin strip of adhesive. The cover is quite flexible and sturdy.

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手順3 Remove logic board cover

Nokia 3.1 Display Assembly Replacement, Remove logic board cover: 手順 3、 2の画像 1

Nokia 3.1 Display Assembly Replacement, Remove logic board cover: 手順 3、 2の画像 2

Remove the seven Torx T5 screws from the logic board cover.
Remove the logic board cover.
Lift up the battery connector from the logic board.

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手順4 Remove battery adhesive strips

Nokia 3.1 Display Assembly Replacement, Remove battery adhesive strips: 手順 4、 2の画像 1

Nokia 3.1 Display Assembly Replacement, Remove battery adhesive strips: 手順 4、 2の画像 2

At the bottom end of the battery you will see two black ends of adhesive strips showing up from underneath the battery.
Slowly pull at those adhesive strip ends to be able to lift out the battery.

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手順5 Remove logic board

Nokia 3.1 Display Assembly Replacement, Remove logic board: 手順 5、 2の画像 1

Nokia 3.1 Display Assembly Replacement, Remove logic board: 手順 5、 2の画像 2

Remove of connectors from the logic board:
button connector,
display connector,
second board connector and
WIFI cable connector.
Now remove the logic board by slowly wiggling it up. There are no screws used to attached it to the case. Only an adhesive strip on its back holds it in place.

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手順6 Peal up display cable

Nokia 3.1 Display Assembly Replacement, Peal up display cable: 手順 6、 1の画像 1

Slowly peal up the display cable starting from the connector.

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手順7 Remove the display

Nokia 3.1 Display Assembly Replacement, Remove the display: 手順 7、 2の画像 1

Nokia 3.1 Display Assembly Replacement, Remove the display: 手順 7、 2の画像 2

この手順で使用する道具：

Plastic Cards

$2.99

購入する

Before trying to disassemble the display you need to heat it up to loosen the adhesive that holds it in place.
Hint: There is much less glue at the sides of the display compared to the top and bottom. So start on the sides to get under the display.
Use a flat tool like a razor blade to get under the display. Slowly loosen up the sides by cutting through the heated up adhesive.
Especially after getting under the display initially with the razor blade a slightly thicker tool like a plastic card might be worth a try. When loosening up the top and bottom of the display you will need patience and a plastic card won't damage the plastic frame as much.