Samsung Galaxy A40 Battery Disconnect Replacement

Written By: Dominik Schnabelrauch

Comments: 9

Samsung Galaxy A40 Battery Disconnect Replacement

Difficulty

Moderate

Steps

Time Required

20 - 25 minutes

Introduction

Prerequisite only! Use this guide to disconnect the battery in your Samsung Galaxy A40.

Tools

Step 1

Insert a SIM card eject tool, a SIM eject bit or a straightened paper clip into the hole on the SIM tray located on the left side of the phone.
Press your SIM card eject tool firmly into the hole in order to eject the SIM card tray.
Remove the SIM card tray.
When reinserting the cards, make sure to properly orient them in the tray.

Step 2

Apply a heated iOpener to the back cover to loosen the adhesive underneath. Apply the iOpener for at least two minutes.

Step 3

Secure a suction handle to the right edge of the back cover, as close to the edge as possible.
If the phone's back cover is damaged, the suction handle may not stick. Try lifting it with strong tape, or superglue the suction handle in place and allow it to cure so you can proceed.
Lift the back cover with the suction handle to create a small gap between the back cover and the frame.
Insert an opening pick into the gap.
In case you have trouble creating a gap, apply more heat to further soften the adhesive. Follow the iOpener instructions to avoid overheating.

Step 4

Slide the opening pick to the bottom right corner and leave it in place to prevent the adhesive from resealing.

Step 5

Insert a second opening pick at the bottom right corner.
Slide the opening pick along the right edge of your phone to cut the adhesive beneath the back cover.
Leave the opening pick in the top right corner.
At this point of the back cover removal feel free to remove the suction cup or continue to use it for a better grip.

Step 6

Insert a third opening pick at the top right corner of your phone.
Slide the opening pick along the top edge of your phone to cut the adhesive.
Leave the opening pick in the top left corner to prevent the adhesive from resealing.
If the adhesive becomes hard to cut, it has most likely cooled down. Use your iOpener to reheat it.

Step 7

Insert a fourth opening pick at the top left corner of your phone.
Slide the opening pick along the left edge of your phone to cut the adhesive.
Leave the opening pick in the bottom left corner.

Step 8

Insert a fifth opening pick to cut the remaining adhesive at the bottom edge of your phone.
In order to cut all the adhesive at the bottom edge of the device, you need to insert the opening pick about 0.4 inch (1cm).

Step 9

To avoid tearing the fingerprint cable during the following step, make sure to gently press down the fingerprint reader while lifting the back cover.
Fold the back cover upwards and remove it.

The next step is to remove screws. You cannot remove the plastic mid-frame without first removing the screws. The guide is missing this step.

John Westlund - 25/01/21

La cover posteriore è di vetro o in plastica?

The back cover is made in plastic or glass?

jacopo -

Hi Jacopo, the Samsung Galaxy A40 has a plastic back cover.

Dominik Schnabelrauch -

attenzione al sensore di impronta! a me è rimasto attaccato alla cover e si è rotto il cavo

Maria Elena Colombi -

Step 10

Remove the thirteen 3.4 mm-long Phillips #00 screws.

Kijk uit voor de vingerafdrukscanner. De flat cable kan aan de behuizing blijven hangen, en kan dan afscheuren.

Arno van Duijn -

You can remove the cover for the fingerprint contact AFTER you remove the plastic mid-frame, so when re-assembling it you can get access to the cable connections.

If you DO try to remove the plastic cover first, it probably WILL go flying at great speeds, so cover the area with your hand, or put a finger on it.

I tried from the top, with a tiny flat-head screwdriver & it went flying, I dont think that was the right place to bend, maybe try from one of the sides?

Sebastian -

Step 11

Insert an opening pick between the left edge of the phone assembly and the midframe.
Slide the opening pick along the left edge of the phone to release the plastic clips holding the midframe in place.