Introduction

iPhone batteries are rated to hold 80% of their capacity for up to 500 charge cycles, which lasts roughly 18-24 months for most users. After that, your iPhone may need to be charged far more frequently, and iOS may warn you that performance is affected (in other words, your phone will run slower). Use this guide to replace your battery and restore your iPhone 13 mini to like-new performance.

If your battery is swollen, take appropriate precautions.

Note: After the repair, your iPhone may display a warning about the “genuineness” of the battery, even when using original Apple parts. If your iPhone functions normally, you can safely ignore the warning.

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

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    • For your safety, discharge the 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. If your battery is swollen, take appropriate precautions.

    • Power off your iPhone before beginning disassembly.

    • Remove the two 6.8 mm-long pentalobe P2 screws at the bottom edge of the iPhone.

    • Opening the iPhone's display will compromise its waterproof seals. Have replacement seals ready before you proceed past this step, or take care to avoid liquid exposure if you reassemble your iPhone without replacing the seals.

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    • Heating the bottom edge of the iPhone helps soften the adhesive securing the display, making it easier to open.

    • Heat an iOpener and apply it to the bottom edge for two minutes.

    • A hair dryer, heat gun, or hot plate may also be used, but be careful not to overheat the iPhone 13 mini—the display and internal battery are both susceptible to heat damage.

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    • This step demonstrates the iSclack. If you aren't using an iSclack, skip to the next step for an alternate method.

    • Position the suction cups near the bottom edge of the iPhone—one on the front, and one on the back.

    • If your display or back glass is badly cracked, covering it with a layer of clear packing tape may help the suction cups adhere.

    • Don't try to completely separate the display; a small opening along the bottom edge is all you need.

    • Press both suction cups firmly into place. Hold onto your iPhone securely and close the handle of the iSclack to slightly separate the screen from the rear case of the phone.

    • Insert an opening pick into the gap under the display on the lower edge of the iPhone.

    • Skip the next two steps.

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    • If you're using a single suction handle, apply it to the bottom edge of the phone, as close to the edge as possible.

    • If your display is badly cracked, covering it with a layer of clear packing tape may allow the suction cup to adhere. Alternatively, very strong tape may be used instead of the suction cup. If all else fails, you can superglue the suction cup to the broken screen.

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    • Pull up on the suction cup with firm, constant pressure to create a slight gap between the front panel and rear case.

    • Insert an opening pick into the gap.

    • The watertight adhesive holding the display in place is very strong; creating this initial gap takes a significant amount of force. If you're having a hard time opening a gap, apply more heat, and gently rock the screen up and down to weaken the adhesive until you create enough of a gap to insert your tool.

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    • Slide the opening pick around the bottom right corner and along the right edge of the iPhone, slicing through the adhesive holding the display in place.

    • Don't insert the opening pick too far underneath the front panel, or you may cause damage to internal components.

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    • Re-insert your pick at the bottom left corner of the iPhone.

    • Slide the opening pick around the lower left corner and up the left edge of the iPhone, slicing through the adhesive holding the display in place.

    • Don't insert the pick very far, or you may damage the display cables along this side of the iPhone. Insert it only a few millimeters, or about the width of the display bezel.

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    • The top edge of the display is secured with both glue and clips.

    • Insert your pick into the right edge of the phone. Slide it around the top-right corner and across the top edge.

    • Don't insert the pick more than a few millimeters—about the width of the display bezel—or you may damage the front panel sensor array.

    • Gently pulling the front panel assembly towards the bottom edge of the phone simplifies this step a little.

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    • Pull on the small nub on the suction cup to remove it from the front panel.

    • If you used an iSclack and it's still affixed to the iPhone, remove it now.

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    • Open the iPhone by swinging the display up from the right side, like the front cover of a book.

    • Don't try to fully separate the display yet, as several fragile ribbon cables still connect it to the iPhone's logic board.

    • Lean the display against something to keep it propped up while you're working on the phone.

    • During reassembly, lay the display in position, align the clips along the top edge, and carefully press the top edge into place before snapping the rest of the display down. If it doesn't click easily into place, check the condition of the clips around the perimeter of the display and make sure they aren't bent.

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    • Remove the 1.2 mm-long Y000 screw securing the battery and display connector cover.

    • Throughout this repair, keep track of each screw and make sure it goes back exactly where it came from to avoid damaging your iPhone.

    • During reassembly, this is a good point to power on your iPhone and test all functions before you seal the display in place. Be sure to power your iPhone back down completely before you continue working.

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    • Use a pair of tweezers to remove the battery and display connector cover.

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    • Use a spudger to pry the battery and OLED panel cable connectors up from their sockets on the logic board.

    • Try not to damage the black silicone seal surrounding this and other board connections. These seals provide extra protection against water and dust intrusion.

    • Bend the connector slightly away from the logic board to prevent it from accidentally making contact with the socket and providing power to the phone during your repair.

    • To re-attach press connectors like this one, carefully align and press down on one side until it clicks into place, then repeat on the other side. Do not press down on the middle. If the connector is misaligned, the pins can bend, causing permanent damage.

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    • Remove the three screws (securing the front sensor assembly cover):

    • One PH000 1.4 mm-long screw

    • One Y000 1.8 mm-long screw

    • One Y000 1.2 mm-long screw

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    • Use a pair of tweezers to remove the front sensor assembly connector cover.

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    • Use a spudger to disconnect the front sensor assembly cable connector.

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    • Remove the four 1.5 mm-long Phillips screws securing the speaker.

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    • Use a pair of tweezers to remove the speaker.

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    • The battery is secured to the rear case with three pieces of stretch-release adhesive—two on the bottom edge of the battery, and one on the top edge.

    • Peel down the first battery adhesive pull-tab to un-stick it from the bottom edge of the battery.

    • Don't jab the battery with any sharp tools. A punctured battery may leak dangerous chemicals or catch fire.

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    • Grab the first pull-tab with a pair of tweezers or your fingers and slowly pull it away from the battery, toward the bottom of the iPhone 13 mini.

    • Pull hard enough to maintain tension on the strip, but don't force it. Give it plenty of time to stretch and un-stick from under the battery.

    • Don't press down on the battery. Hold the iPhone firmly by its sides.

    • Keep the strip flat and unwrinkled. Try to pull evenly on the whole strip, rather than pulling mainly in the middle or on one side.

    • Pull at a low angle so the strip doesn't snag on the edge of the battery.

    • If the adhesive strip breaks off, try to retrieve it using your fingers or blunt tweezers, and continue pulling—but do not pry under the battery.

    • If any of the adhesive strips break off underneath the battery and can't be retrieved, try to remove the other strips, and then proceed as instructed below.

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    • Grab the wide pull tab with blunt nose tweezers and slowly pull it away from the battery, toward the bottom of the iPhone.

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    • Grab the second pull-tab with your fingers and pull it away from the battery, toward the bottom of the iPhone.

    • Follow the same procedure as with the previous strip: don't press down on the battery, keep the strip flat and unwrinkled, and pull at a low angle.

    • If the adhesive strip breaks off, try to retrieve it using your fingers or blunt tweezers, and continue pulling—but do not pry under the battery.

    • If the adhesive breaks off underneath the battery and can't be retrieved, continue with the next step.

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    • Grab the pull tab on the top with tweezers and slowly pull it away from the battery, toward the top of the iPhone.

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    • Using the same procedure as before, pull the remaining tab to stretch and remove the remaining adhesive strip holding the battery in place. Try not to snag the adhesive on anything.

    • If the adhesive breaks off underneath the battery and can't be retrieved, apply a few drops of high concentration (over 90%) isopropyl alcohol under the edge of the battery in the area of the broken adhesive strip(s).

    • Wait about one minute for the alcohol solution to weaken the adhesive.

    • Use the flat end of a spudger to gently lift the battery.

    • Don't try to forcefully lever the battery out. If needed, apply a few more drops of alcohol to further weaken the adhesive. Never deform or puncture the battery with your pry tool.

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    • Remove the battery.

    • If there's any alcohol solution remaining in the phone, carefully wipe it off or allow it to air dry before installing your new battery.

    • Use this guide to install new battery adhesive strips.

    • Perform a force restart after reassembly. This can prevent several issues and simplify troubleshooting.

Conclusion

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 the above steps in reverse order. Apply new adhesive where necessary after cleaning the relevant areas with isopropyl alcohol (>90%).

For optimal performance, after completing this guide, calibrate your newly installed battery.

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 iPhone 13 mini Answers community for help.

Adriana Zwink

Member since: 18/12/19

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