OnePlus 3 - Replacing the battery

  • OnePlus 3
  • 12 Steps
  • Medium
  • 30 min.
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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.

    €2.00 at the iDoc store
  • Hard Plastic Picks

    Hard Plastic Picks

    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
  • 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.

    €5.00 at the iDoc store
  • Tweezers

    Tweezers

    We recommend using tweezers to remove screws and various small parts from your device.

    €10.00 at the iDoc store
  • Steel Laboratory Spatula

    Steel Laboratory Spatula

    You need a flat and sturdy prying tool to disconnect glued parts.

    €7.00 at the iDoc store
  • Torx Toolkit, 15 pieces T2

    Torx Toolkit, 15 pieces T2

    Do you need to repair your smartphone? This kit includes the tools you need to tackle basic repairs for yourself, from the spudger to the suction cup, as well as the iDoc magnetic pad that holds your screws and small parts in place while you work. Not sure what goes where? Don’t worry – our detailed repair guides tell you what tool to use for each step.

    €49.00 at the iDoc store
  • Phillips PH00 screwdriver

    Phillips PH00 screwdriver

    You need the right screwdriver for removing PH00 screws.

    €13.00 at the iDoc store

Required replacement part

Show all replacement parts for the OnePlus 3 

Replacement parts and tools for this repair

Our tools plus the right spare part help you fix your device easily.

for €49.00

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
  1. Removing the back cover screws

    OnePlus 3 - Removing the back cover screws 01
    OnePlus 3 - Removing the back cover screws 02
    • 2 × 2.5 mm Torx

    You need a torx screwdriver (T2) to open the OnePlus 3.

    1. 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.
  2. Removing the SIM card tray

    OnePlus 3 - Removing the SIM card tray 01
    OnePlus 3 - Removing the SIM card tray 02
    1. 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.
  3. Removing the back cover

    OnePlus 3 - Removing the back cover 01
    OnePlus 3 - Removing the back cover 02
    OnePlus 3 - Removing the back cover 03
    OnePlus 3 - Removing the back cover 04
    OnePlus 3 - Removing the back cover 05
    OnePlus 3 - Removing the back cover 06
    OnePlus 3 - Removing the back cover 07
    1. Put your OnePlus 3 on a soft, clean surface to avoid scratching the back.
    2. 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.
    3. 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).
    4. 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.
    5. 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.
  4. Disconnecting the battery

    OnePlus 3 - Disconnecting the battery 01
    OnePlus 3 - Disconnecting the battery 02

    Before starting the repair, disconnect the battery contact to prevent short circuits and avoid accidentally turning on your device during the repair.

    1. Now carefully pry off the battery connector by carefully sliding a spudger under it.
  5. Removing the flex cables

    OnePlus 3 - Removing the flex cables 01
    OnePlus 3 - Removing the flex cables 02
    OnePlus 3 - Removing the flex cables 03
    OnePlus 3 - Removing the flex cables 04
    OnePlus 3 - Removing the flex cables 05
    • 1 × 2,8 mm Phillips
    1. Remove the bracket plate over the two flex cable connectors, which is secured with a Phillips screw.
    2. Disconnect the two connectors of the flex cables on the mainboard (on top) and the connector on the lower circuit board using a spudger.
    3. Now remove the disconnected flex cable.
  6. Removing the battery

    OnePlus 3 - Removing the battery 01
    OnePlus 3 - Removing the battery 02
    OnePlus 3 - Removing the battery 03
    OnePlus 3 - Removing the battery 04
    OnePlus 3 - Removing the battery 05
    OnePlus 3 - Removing the battery 06

    The battery is glued into the display.

    1. First remove the adhesive strips on both sides of the battery. The strips hold the cables of the standby/volume cables in place.
    2. 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.
    3. 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.

  7. The right tools for your repair

    With the right tools, you will succeed in any repair. In our store you will find a large selection of professional quality tools.
    VIEW NOW
  8. Inserting the battery

    OnePlus 3 - Inserting the battery 01
    OnePlus 3 - Inserting the battery 02
    OnePlus 3 - Inserting the battery 03
    OnePlus 3 - Inserting the battery 04
    1. Slide the battery under the flex cable and position it so that there's a small space on both sides.
    2. Press in the battery so it sticks.
    3. Stick the adhesive strips to the connectors of the standby/volume cables again.
  9. Connecting the flex cables

    OnePlus 3 - Connecting the flex cables 01
    OnePlus 3 - Connecting the flex cables 02
    OnePlus 3 - Connecting the flex cables 03
    OnePlus 3 - Connecting the flex cables 04
    OnePlus 3 - Connecting the flex cables 05
    • 1 × 2,8 mm Phillips
    1. Connect the top flex cable to the mainboard.
    2. Insert the second flex cable and connect both ends.
    3. 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.

    4. Put the bracket back on. Latch it in on one side and fasten the screw.
  10. Connecting the battery

    OnePlus 3 - Connecting the battery 01
    OnePlus 3 - Connecting the battery 02
    1. Reconnect the battery by pressing it on the mainboard with your finger.
  11. Attaching the back cover

    OnePlus 3 - Attaching the back cover 01
    OnePlus 3 - Attaching the back cover 02
    OnePlus 3 - Attaching the back cover 03
    OnePlus 3 - Attaching the back cover 04

    Put the display back into the back cover.

    1. The display latches in at the top end. Start here and then gradually fold the display into the back cover.
    2. Press down the display all around the edges, until it sits flush in the back cover.
  12. Inserting the SIM card slider

    OnePlus 3 - Inserting the SIM card slider 01
    OnePlus 3 - Inserting the SIM card slider 02
    1. Inser the SIM card slider and any cards back in the device. Make sure it's positioned correctly.
  13. Inserting the back cover screws

    OnePlus 3 - Inserting the back cover screws 01
    OnePlus 3 - Inserting the back cover screws 02
    • 2 × 2.5 mm Torx
    1. Screw in the two torx screws on the left and right at the bottom end of the device.
Ø 4.8 (10 Ratings)

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