OnePlus 3 battery repair guide

The battery life is low. Your OnePlus 3 keeps crashing or won’t charge.

In this repair guide, we show you how to replace your OnePlus 3 defective battery on your own. This repair can help if your OnePlus 3 crashes during heavy use because the voltage temporarily drops, you can no longer charge it or turn it on, or the battery life is very low.

Required tools

Tool for prying out batteries

Tool for prying out batteries

You have to use a very stable tool to pry out the battery. At the same time, it has to be flat enough to insert below the battery.
€2.00 at the iDoc store
Flat Picks

Flat Picks

You need a very flat tool such as a flat pick to pry out parts that are glued in place.
€5.00 at the iDoc store
Heat gun

Heat gun

You can use a heat gun to heat parts that are glued on so they’re easier to remove. In most cases, you can also use a hairdryer.
from €14.47 on Amazon
For storing screws

For storing screws

We recommend storing your screws so you don’t mix up the various screws and small parts.
€10.00 at the iDoc store
iFlex Opening Tool

iFlex Opening Tool

Opening your smartphone can be a very delicate operation, especially if the glue is very persistent. The blade of the flexible but sturdy iFlex measures just 0.15 mm, so it fits in even the smallest gaps, such as between the screen and the frame. The practical iFlex is made of stainless steel and sits comfortably in the hand. This makes it the perfect assistant for every smartphone repair.
€10.00 at the iDoc store
Menda ESD Spudger

Menda ESD Spudger

You need a flat plastic prying tool to disconnect the various plugs and connectors.
€7.00 at the iDoc store
Tweezers

Tweezers

We recommend using tweezers to remove screws and various small parts from your device.
€11.00 at the iDoc store
Pick Set

Pick Set

You need a flat but stable tool such as a pick to pry out parts that are glued in place.
€2.00 at the iDoc store
Steel Laboratory Spatula

Steel Laboratory Spatula

You need a flat and sturdy prying tool to disconnect glued parts.
€4.00 at the iDoc store
Phillips PH00 screwdriver

Phillips PH00 screwdriver

You need the right screwdriver for removing PH00 screws.
€12.00 at the iDoc store
Wiha PicoFinish Torx Screwdriver T2

Wiha PicoFinish Torx Screwdriver T2

€12.00 at the iDoc store

Required replacement part

OnePlus 3 Battery

OnePlus 3 Battery

from €19.50 on Amazon

Show all replacement parts for the OnePlus 3

Steps

12 Steps

Removing the back cover screws

Step 1

Removing the SIM card tray

Step 2

Removing the back cover

Step 3

Disconnecting the battery

Step 4

Removing the flex cables

Step 5

Removing the battery

Step 6

Inserting the battery

Step 7

Connecting the flex cables

Step 8

Connecting the battery

Step 9

Attaching the back cover

Step 10

Inserting the SIM card slider

Step 11

Inserting the back cover screws

Step 12

Getting started with the repair of your OnePlus 3

If you get stuck or have questions, you can post a comment. We’d be happy to help.

12 steps

Removing the back cover screws
2 × 2.5 mm Torx

You need a torx screwdriver (T2) to open the OnePlus 3.
Remove the two torx screws from the lower edge of the back cover. They are to the left and right of the charging port and the audio port. Place the screws in the same box of the magnetic pad.
Removing the SIM card tray
You can use the SIM tool or a paperclip to remove the SIM card tray. Press the tool into the small hole on the SIM card try and pull it out.
Removing the back cover
Put your OnePlus 3 on a soft, clean surface to avoid scratching the back.
To lift the display, you need a suction cup, a hard plastic pick and a heat gun. If the screen is severely cracked, cover all of it with a strip of packing tape before you continue.
The screen is glued to the frame. Use a heat gun to heat the outer edges of the display to about 60°C (140°F).
Place the suction cup over the Home button (if possible) or next to it. While lifting the screen with the suction cup, insert the hard plastic pick between the aluminum frame and the display frame and press down the aluminum frame. Because the display’s glued on, you have to slide the pick all around the iPhone between the aluminum frame and the display frame.
The display is latched into the back cover at the top end (above the earpiece). Use a pick to press the display towards the home button and lift it out of the display.
Disconnecting the battery
Before starting the repair, disconnect the battery contact to prevent short circuits and avoid accidentally turning on your device during the repair.
Now carefully pry off the battery connector by carefully sliding a spudger under it.
Removing the flex cables
1 × 2,8 mm Phillips

Remove the bracket plate over the two flex cable connectors, which is secured with a Phillips screw.
Disconnect the two connectors of the flex cables on the mainboard (on top) and the connector on the lower circuit board using a spudger.
Now remove the disconnected flex cable.
Removing the battery
The battery is glued into the display.
First remove the adhesive strips on both sides of the battery. The strips hold the cables of the standby/volume cables in place.
Bend the flex cable of the lower circuit board to the side and make sure not to damage the cable when taking out the battery.
Grab the tab on the battery and pull on it slowly but with force. Press down the display frame and try pulling out the battery far enough so you can slide your fingers underneath and lift it out.
If the tab rips, you can slide a flat, blunt plastic tool under the battery to remove it.
Don't bend the battery too much and don't use a pointed or sharp tool, since this could damage the battery.

Inserting the battery
Slide the battery under the flex cable and position it so that there's a small space on both sides.
Press in the battery so it sticks.
Stick the adhesive strips to the connectors of the standby/volume cables again.
Connecting the flex cables
1 × 2,8 mm Phillips

Connect the top flex cable to the mainboard.

Insert the second flex cable and connect both ends.

Use some pressure to click in the connectors. If it doesn't work right away, take off the connector again and try again.Don't slide the connector over the socket sideways. This could damage the connector.

Put the bracket back on. Latch it in on one side and fasten the screw.
Connecting the battery
Reconnect the battery by pressing it on the mainboard with your finger.
Attaching the back cover
Put the display back into the back cover.
The display latches in at the top end. Start here and then gradually fold the display into the back cover.
Press down the display all around the edges, until it sits flush in the back cover.
Inserting the SIM card slider
Inser the SIM card slider and any cards back in the device. Make sure it's positioned correctly.
Inserting the back cover screws
2 × 2.5 mm Torx

Screw in the two torx screws on the left and right at the bottom end of the device.