Featured

Featured Guide

Difficulty

Moderate

Steps

16

Time Required

                          20 - 45 minutes

Sections

3

  • Rear Glass
  • 7 steps
  • Battery Disconnect
  • 4 steps
  • Battery
  • 5 steps

Flags

1

This guide has been found to be exceptionally cool by the iFixit staff.

  • BackOnePlus 8T

  • Full Screen

  • Options

  • History

  • Save to Favorites

  • Download PDF

  • Edit

  • Translate

  • Get Shareable Link

  • Embed This Guide

  • Notify Me of Changes

  • Stop Notifications

Introduction

If your battery is swollen, take appropriate precautions. For your safety, discharge your battery below 25% before disassembling your phone. This reduces the risk of a dangerous thermal event if the battery is accidentally damaged during the repair.

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

What you need

Step 1

              Heat the rear glass
  • Switch off your phone.
  • Heat an iOpener to loosen the adhesive beneath the rear glass. Apply the iOpener for at least two minutes. You might want to repeat this step several times during the rear glass removal.
  • A hair dryer, heat gun, or hot plate may also be used, but be careful not to overheat the phone—the AMOLED display and internal battery are both susceptible to heat damage.

Switch off your phone.

Heat an iOpener to loosen the adhesive beneath the rear glass. Apply the iOpener for at least two minutes. You might want to repeat this step several times during the rear glass removal.

A hair dryer, heat gun, or hot plate may also be used, but be careful not to overheat the phone—the AMOLED display and internal battery are both susceptible to heat damage.

1024

Step 2

              Create a gap
  • Apply a suction cup to the back of the phone, as close as possible to the center of the bottom edge.
  • 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.
  • Pull on the suction cup to create a gap between the rear glass and the frame.
  • Insert the tip of an opening pick into the gap and slide it to the bottom left corner.
  • Leave the opening pick in its place to prevent the adhesive from resealing.

Apply a suction cup to the back of the phone, as close as possible to the center of the bottom edge.

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.

Pull on the suction cup to create a gap between the rear glass and the frame.

Insert the tip of an opening pick into the gap and slide it to the bottom left corner.

Leave the opening pick in its place to prevent the adhesive from resealing.

Step 3

              Slice the adhesive
  • Insert a second opening under the bottom left corner.
  • Slide the opening pick along the bottom edge to the bottom right corner.
  • Leave the pick in its place to prevent the adhesive from resealing.

Insert a second opening under the bottom left corner.

Slide the opening pick along the bottom edge to the bottom right corner.

Leave the pick in its place to prevent the adhesive from resealing.

Step 4

              Slice the adhesive
  • If the adhesive becomes hard to cut, it has most likely cooled down. Use your iOpener to reheat it.
  • Insert a third opening pick under the bottom right corner.
  • Slide the opening pick along the right edge to the top right corner.
  • Leave the opening picks in their place 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.

Insert a third opening pick under the bottom right corner.

Slide the opening pick along the right edge to the top right corner.

Leave the opening picks in their place to prevent the adhesive from resealing.

Step 5

              Slice the adhesive
  • Insert a fourth opening pick under the top right corner.
  • Slide it along the top edge to the top left corner to cut the adhesive.
  • Leave the opening pick in its place to prevent the adhesive from resealing.

Insert a fourth opening pick under the top right corner.

Slide it along the top edge to the top left corner to cut the adhesive.

Step 6

              Slice the remaining adhesive
  • Insert a fifth opening pick under the top left corner.
  • Slide the opening pick along the left edge to the bottom left corner to cut the remaining adhesive.

Insert a fifth opening pick under the top left corner.

Slide the opening pick along the left edge to the bottom left corner to cut the remaining adhesive.

Step 7

              Remove the rear glass
  • Remove the rear glass.
  • After installing the back cover, apply strong, steady pressure to your phone for several minutes to help the adhesive form a good bond—a stack of heavy books works well.

Remove the rear glass.

After installing the back cover, apply strong, steady pressure to your phone for several minutes to help the adhesive form a good bond—a stack of heavy books works well.

Step 8

              Unscrew the motherboard cover
  • Use a Phillips screwdriver to remove the nine 3.8 mm-long screws securing the motherboard cover.

Use a Phillips screwdriver to remove the nine 3.8 mm-long screws securing the motherboard cover.

Step 9

              Unclip the motherboard cover
  • Insert the tip of an opening pick under the bottom left corner of the motherboard cover.
  • Use the opening pick to lift the motherboard cover up and release the plastic clips that hold it in place.

Insert the tip of an opening pick under the bottom left corner of the motherboard cover.

Use the opening pick to lift the motherboard cover up and release the plastic clips that hold it in place.

Step 10

              Remove the motherboard cover
  • Remove the motherboard cover.

Remove the motherboard cover.

Step 11

              Disconnect the battery
  • Use a spudger to disconnect the battery by prying the connector straight up from its socket.

Use a spudger to disconnect the battery by prying the connector straight up from its socket.

Step 12

              Disconnect the flex cables
  • Use the flat end of a spudger to disconnect the two flex cables which are covering the battery.

Use the flat end of a spudger to disconnect the two flex cables which are covering the battery.

Step 13

              Uncover the battery
  • Bend the two flex cables toward the bottom of the phone and out of the way of the battery.
  • Take care not to crease the cables.

Bend the two flex cables toward the bottom of the phone and out of the way of the battery.

Take care not to crease the cables.

Step 14

              Pull up the battery
  • Peel back the red pull tab and the black sticker from the left edge of the battery.
  • Pull the tab up with slow and steady force to separate the battery from the adhesive holding it in place.

Peel back the red pull tab and the black sticker from the left edge of the battery.

Pull the tab up with slow and steady force to separate the battery from the adhesive holding it in place.

Step 15

              Pull up the battery
  • Peel back the red pull tab and the black sticker from the right edge of the battery.
  • Pull the tab up with slow and steady force to separate the battery from the adhesive holding it in place.

Peel back the red pull tab and the black sticker from the right edge of the battery.

Step 16

              Remove the battery
  • Remove the battery.

Remove the battery.

If possible, turn on your device and test your repair before installing new adhesive and resealing.Secure the new battery with pre-cut adhesive or double-sided adhesive tape. In order to position it correctly, apply the new adhesive into the device at the places where the old adhesive was located, not directly onto the battery. Press the new battery firmly into place.To reassemble your device, follow these instructions in reverse order. Apply new adhesive where necessary after cleaning the relevant areas with isopropyl alcohol (>90%).For optimal performance, calibrate your newly installed battery: Charge it to 100% and keep charging it for at least 2 more hours. Then use your device until it shuts off due to low battery. Finally, charge it uninterrupted to 100%.Take your e-waste to an R2 or e-Stewards certified recycler.Repair didn’t go as planned? Try some basic troubleshooting, or ask our Answers community for help.

Cancel: I did not complete this guide.

                                                                                      6 other people completed this guide.

Author

                                      with 2 other contributors 


                    Adriana Zwink

Member since: 12/18/2019

36,607 Reputation

                                      167 Guides authored                  



                       Badges:
                       34







                                                        +31 more badges

Team

                       iFixit                        

                                                  Member of iFixit 



                    Community                     


                                            141 Members                     


                                            15,772 Guides authored

LAURA-ANN CHARLOT - Sep 19, 2022

Reply

Michael Rooplall - Oct 7, 2022

Reply

My refurbished OP8T’s battery gave up randomly one day. Plugging in any charger/any attempt to boot would just briefly showed a lightning bolt icon and would fade to black.

With that said, I completed my fix yesterday evening without any issues. I used a blow-dryer to loosen the back cover rather than the iFixit heating tool, and it worked fantastically. I removed the dead stock battery and replaced it with a 4600mAh from eBay, taking care to move the sticky pull tabs from the old battery to the new for future repairs. The battery and two removed cables snapped in with an audible click.

When reseating the motherboard cover, be aware there’s a little connector that needs to line up with the board, and that will click into place.

In total, repairs cost about $40 and 40 minutes of my time. Great guide!