Replacing the battery

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

  • iPhone 7
  • 17 Steps
  • Medium
  • 30 min.
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Introduction

In this guide, we show you how to replace your iPhone 7’s defective battery on your own.This repair can help if your iPhone 7 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.
Back up all your data before the repair, and touch something like a radiator to get rid of any static charges.

Required tool

  • Hard Plastic Pick

    Hard Plastic Pick

    You need a flat but stable tool such as a pick to pry out parts that are glued in place.

    €1.00 in 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 €6.00 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 in the iDoc store
  • Suction cup

    Suction cup

    A suction cup is perfect for lifting smooth surfaces such as displays or rear glass panels.

    €3.00 in the iDoc store
  • Tweezers

    Tweezers

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

    €16.00 in the iDoc store
  • Pentalobe PL1 screwdriver

    Pentalobe PL1 screwdriver

    You need the right screwdriver for removing pentalobe PL1 screws.

    €10.00 in the iDoc store
  • Phillips PH00 screwdriver

    Phillips PH00 screwdriver

    You need the right screwdriver for removing PH00 screws.

    €7.00 in the iDoc store
  • Y-type screwdriver

    Y-type screwdriver

    You need the right screwdriver for removing Y-type screws.

    €12.00 in the iDoc store

Required replacement part

  • iPhone 7 Battery with Adhesive Strips

    iPhone 7 Battery with Adhesive Strips

    Replace it with a new iPhone 7 battery including the adhesive strips to hold it in place. This powerful new battery can help if your iPhone 7 crashes during heavy use because the voltage temporarily drops, your phone switches off when it gets cold, you can no longer charge it or turn it on, or the battery life is very low. Please note: To ensure optimal performance, you should completely discharge the battery one time (play a video and turn on the flash) and then charge it all the way. Once you’ve installed your new battery, you can talk, listen to music, watch videos or do whatever you want on your phone for much longer. As always, we’ve tested this replacement part to make sure it meets our high standards for quality and functionality. That way, you know you’re getting a battery with full capacity.

    €29.00 in the iDoc store
View product(s) in the iDoc store

Replacement parts and tools for this repair

With our tools and the right replacement part, your repair will be a success.

iPhone 7 Battery with Adhesive Strips

Replace it with a new iPhone 7 battery including the adhesive strips to hold it in place. This powerful new battery can help if...

Tool Kit for iPhone 7 and iPhone 8

No matter what the problem is, our iPhone 7 / 8 tool kit can help you fix it. This repair kit includes an opening tool; Wiha PicoFinish Phillips,...

together for €63.00

Getting started

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

17 steps
  1. Switching off your device

    iPhone 7 - Switching off your device 01
    iPhone 7 - Switching off your device 02
    1. Turn your iPhone off completely to avoid damaging it during the repair. Press the Sleep/Wake button for about three seconds until the slider labeled “power off” appears.
    2. Swipe it from left to right. Now your iPhone will shut down completely, which can take about ten seconds.
    Comments
  2. Removing the enclosure screws

    iPhone 7 - Removing the enclosure screws 01
    iPhone 7 - Removing the enclosure screws 02
    • 2 × 3,3 mm Pentalobe-Schraube

    You need a pentalobe screwdriver (PL1) to open the iPhone 7.

    1. Remove the two pentalobe screws at the bottom of the enclosure. They’re to the right and left of the Lightning connector. Put the screws in the same section of your magnetic pad.
    Comments
  3. Lifting the display

    iPhone 7 - Lifting the display 01
    iPhone 7 - Lifting the display 02
    iPhone 7 - Lifting the display 03
    iPhone 7 - Lifting the display 04
    iPhone 7 - Lifting the display 05
    iPhone 7 - Lifting the display 06
    1. Put your iPhone 7 on a soft, clean surface to avoid scratching the back.
    2. To lift the front panel, you need a suction cup, a hard plastic pick and a heat gun. If the screen is severely cracked, cover all of it with 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. Don’t stick the pick in too far on the side where the Sleep/Wake button is because that could damage the flexible flat display cables.
    5. Now use the pick to push the display toward the Lightning connector so the tabs come out of the aluminum frame. Then you can fold the display over to the side.
    6. Set the display on the aluminum frame so you don’t stretch the flexible flat cables too much.

    If necessary, heat the outer edges of the display a few times. Don’t forget that the flexible flat cables for the display are on the side with the Sleep/Wake button. The display is also hooked onto the edge of the earpiece.

    Comments
  4. Disconnecting the battery contact

    iPhone 7 - Disconnecting the battery contact 01
    iPhone 7 - Disconnecting the battery contact 02
    iPhone 7 - Disconnecting the battery contact 03
    iPhone 7 - Disconnecting the battery contact 04
    • 1 × 2,4 mm Y-Type-Schraube
    • 3 × 1,0 mm Y-Type-Schraube
    • Battery Connector

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

    1. Use a tri-point screwdriver (Y000) to remove the four tri-point screws. Then take off the cover. Put all the parts in the same section of your magnetic pad.
    2. Now carefully lift off the battery contact by inserting a spudger slightly below the connector. If you don’t have a spudger, you can also try using your fingernail.
    Comments
  5. Disconnecting the display contacts

    iPhone 7 - Disconnecting the display contacts 01
    iPhone 7 - Disconnecting the display contacts 02
    iPhone 7 - Disconnecting the display contacts 03
    • Display
    • Home Button
    1. Use the spudger to disconnect the contacts for the display and Home button.
    Comments
  6. Disconnecting the FaceTime contact

    iPhone 7 - Disconnecting the FaceTime contact 01
    iPhone 7 - Disconnecting the FaceTime contact 02
    iPhone 7 - Disconnecting the FaceTime contact 03
    iPhone 7 - Disconnecting the FaceTime contact 04
    iPhone 7 - Disconnecting the FaceTime contact 05
    • 2 × 1,2 mm Phillips-Schraube
    • Facetime Connector
    1. Use a Phillips screwdriver (PH00) to remove the two Phillips screws. Then take off the cover. Put all the parts in the same section of your magnetic pad.
    2. Using a spudger, carefully disconnect the FaceTime contact from the PCB.
    3. Now you can take off the display all the way.
    Comments
  7. Removing the Taptic Engine

    iPhone 7 - Removing the Taptic Engine 01
    iPhone 7 - Removing the Taptic Engine 02
    iPhone 7 - Removing the Taptic Engine 03
    iPhone 7 - Removing the Taptic Engine 04
    iPhone 7 - Removing the Taptic Engine 05
    iPhone 7 - Removing the Taptic Engine 06
    • 2 × 1,9 mm Phillips-Schraube
    • Taptic Engine
    • 3 × 1,5 mm Phillips-Schraube
    1. Unscrew the two Phillips screws in the plastic cover using a Phillips screwdriver (PH00) and remove them.
    2. Use a spudger to disconnect the Taptic Engine’s contact.
    3. Use a Phillips screwdriver (PH00) to remove the three Phillips screws holding the Taptic Engine in place.
    4. Now remove the Taptic Engine.
    Comments
  8. Removing the battery

    iPhone 7 - Removing the battery 01
    iPhone 7 - Removing the battery 02
    iPhone 7 - Removing the battery 03
    iPhone 7 - Removing the battery 04
    iPhone 7 - Removing the battery 05
    iPhone 7 - Removing the battery 06
    1. The battery is attached to the enclosure by two adhesive strips. Use a pair of tweezers or a laboratory spatula to detach them.
    2. Now pull the adhesive strips off to one side very slowly. Hold the adhesive strips as flat as possible at the level of the iPhone.
    3. Hold onto the battery and iPhone when you pull off the last adhesive strip so the battery can’t fall out of the device.
    4. Now simply remove the battery.
    Comments
  9. Preparing the battery

    iPhone 7 - Preparing the battery 01
    iPhone 7 - Preparing the battery 02
    iPhone 7 - Preparing the battery 03
    iPhone 7 - Preparing the battery 04
    iPhone 7 - Preparing the battery 05
    iPhone 7 - Preparing the battery 06
    1. Remove the big blue piece of protective film and center the adhesive strip on the back of the new battery.
    2. Turn the battery over and remove the little blue pieces of protective film from the tabs.
    3. Fold the tabs over so they stick to the new battery.
    4. Remove the pink protective film from the adhesive strips.

    When attaching the adhesive strip, make sure you can still fold over the tabs at the end.


    Comments
  10. Inserting the battery

    iPhone 7 - Inserting the battery 01
    iPhone 7 - Inserting the battery 02
    1. Put the battery back in the enclosure. Use the battery contact to help you position it right.
      Make sure there’s a little space between the battery and the frame on all sides.
    Comments
  11. Installing the Taptic Engine

    iPhone 7 - Installing the Taptic Engine 01
    iPhone 7 - Installing the Taptic Engine 02
    iPhone 7 - Installing the Taptic Engine 03
    iPhone 7 - Installing the Taptic Engine 04
    iPhone 7 - Installing the Taptic Engine 05
    • 3 × 1,5 mm Phillips-Schraube
    • Taptic Engine Connector
    • 2 × 1,9 mm Phillips-Schraube
    1. Put the Taptic Engine back between the battery and the Lightning connector.
    2. Fasten the Taptic Engine with the three Phillips screws again.
    3. Connect the Taptic Engine’s contact to the Lightning connector again.
    4. Put the plastic cover back in the iPhone and secure it with the two Phillips screws.
    Comments
  12. Connecting the FaceTime contact

    iPhone 7 - Connecting the FaceTime contact 01
    iPhone 7 - Connecting the FaceTime contact 02
    iPhone 7 - Connecting the FaceTime contact 03
    • Facetime-Kontakt
    • 2 × 1,2 mm Phillips-Schraube
    1. Hold the display upright on the frame and connect the FaceTime contact to the logic board.
    2. Set the display on the side of the frame.
    3. Put the FaceTime contact’s cover back in the iPhone and secure it with the two Phillips screws.
    Comments
  13. Connecting the display

    iPhone 7 - Connecting the display 01
    iPhone 7 - Connecting the display 02
    iPhone 7 - Connecting the display 03
    iPhone 7 - Connecting the display 04
    iPhone 7 - Connecting the display 05
    • Display
    • Homebutton
    1. Connect the two contacts from the Home button and display to the logic board.
    Comments
  14. Connecting the battery contact

    iPhone 7 - Connecting the battery contact 01
    iPhone 7 - Connecting the battery contact 02
    iPhone 7 - Connecting the battery contact 03
    • 1 × 2,4 mm Y-Type-Schraube
    • 3 × 1,0 mm Y-Type-Schraube
    1. Reconnect the battery by connecting the battery contact.
    2. Put the cover back in the iPhone and secure it with the four tri-point screws.
    Comments
  15. Attaching the display

    iPhone 7 - Attaching the display 01
    iPhone 7 - Attaching the display 02
    iPhone 7 - Attaching the display 03
    1. Put the display on the side of the frame and lower it onto the iPhone.
    2. Push the display toward the Sleep/Wake button so the tabs click into place.
    3. Then press the entire display into the frame.

    We can’t guarantee that it will still be waterproof. You’d have to reglue the display to make sure of that.

    Comments
  16. Fastening the enclosure screws

    iPhone 7 - Fastening the enclosure screws 01
    • 2 × 3,3 mm Pentalobe-Schraube
    1. Screw the two pentalobe screws to the left and right of the Lightning connector into the enclosure.
    Comments
  17. Setting the time

    iPhone 7 - Setting the time 01

    When the battery is removed from the device, the iPhone loses the time and sets itself to 1:00 a.m. on 1/1/1970. You could have trouble connecting to the cellular network if the time isn’t set.

    After a repair, complete the following steps:

    1. Synchronize your iPhone with iTunes or connect to a WLAN network and wait until the time is set.
      The time won’t be set automatically unless you enable this feature in the settings.
      Settings > General > Date & Time > Set Automatically
    2. Remove the SIM tray with the SIM card and reinsert it.
    3. Activate airplane mode on the device and then deactivate airplane mode.
      Settings > Airplane Mode
    Comments

You did it!

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