How to Disconnect the Battery in the Samsung Galaxy S21 Plus

Written By: Dominik Schnabelrauch

Comments: 1

How to Disconnect the Battery in the Samsung Galaxy S21 Plus

Difficulty

Moderate

Steps

Time Required

25 - 35 minutes

Introduction

This is a prerequisite guide! This guide is part of another procedure and is not meant to be used alone.

This guide was performed on the SM-G996B/DS (international) model. Other models have an additional antenna cable sitting in the left edge of the midframe.

Use this guide to disconnect the battery in the Samsung Galaxy S21 Plus.

Tools

Parts

Step 1

Heat an iOpener and apply it to the bottom edge of the back cover for two minutes.
A hair dryer, heat gun, or hot plate may also be used, but be careful not to overheat the phone—the display and internal battery are both susceptible to heat damage.

Step 2

Secure a suction handle to the bottom edge of the back cover, as close to the edge as possible.
If the back cover is cracked, 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.
If you have trouble creating a gap, apply more heat to further soften the adhesive. Follow the iOpener instructions to avoid overheating.
Insert an opening pick into the gap you created.
Slide the opening pick to the bottom left corner to slice the adhesive.
Leave the opening pick in place to prevent the adhesive from resealing.

Step 3

Insert a second opening pick at the bottom edge of your phone.
Slide the opening pick to the bottom right corner to slice the adhesive.
Leave the opening picks in place to prevent the adhesive from resealing.

Step 4

Heat an iOpener and apply it to the right edge of the back cover for two minutes.

Step 5

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

Step 6

Heat an iOpener and apply it to the top edge of the back cover for two minutes.

Step 7

When you slice near the camera assembly, insert only the tip of the opening pick (~4-5 mm) to avoid damaging or smearing the camera.
Insert a fourth opening pick underneath the top right corner of your phone.
Slide the opening pick along the top edge to slice the adhesive.
Leave the opening pick in the top left corner to prevent the adhesive from resealing.

Step 8

Heat an iOpener and apply it to the left edge of the back cover for two minutes.

Step 9

Insert a fifth opening pick underneath the bottom left corner.
Slide the opening pick along the left edge of the back cover to slice the remaining adhesive.
When you slice near the power button, insert only the tip of the opening pick (~3-4 mm) to avoid damaging the power and volume button flex cable.

Step 10

Remove the back cover.
During reassembly:
This is a good point to power on your phone and test all functions before sealing it up. Be sure to power your phone back down completely before you continue working.
Remove any adhesive chunks with a pair of tweezers or your fingers. Apply heat if you're having trouble separating the adhesive.
If you're using Samsung custom-cut adhesives, follow this guide.
If you're using double-sided tape, follow this guide.

Any suggestions as to what width adhesive to buy?

motty altman -

Step 11

Take care not to puncture or bend the battery with your tool—a punctured or bent battery may leak dangerous chemicals or cause a thermal event.
Be careful of the cable that runs beneath the charging coil. Work slowly and stop sliding the pick if it catches on the cable.
Insert an opening pick underneath the left bottom end of the NFC antenna and charging coil assembly.
Carefully slide the opening pick along the bottom left edge of the assembly to separate it from the battery.

Step 12

Insert an opening pick underneath the bottom end of the NFC antenna and charging coil assembly.
Carefully slide the opening pick along the bottom of the assembly to separate it from the loudspeaker.