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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 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.

For optimal performance, after completing this guide, calibrate your newly installed battery: Charge it to 100% and keep charging it for at least two more hours. Then use your iPhone until it shuts off due to low battery. Finally, charge it uninterrupted to 100%.

  1. iPhone 11 Pro Battery Replacement, Remove the pentalobe screws: step 1, image 1 of 2 iPhone 11 Pro Battery Replacement, Remove the pentalobe screws: step 1, image 2 of 2
    • Before you begin, discharge your iPhone battery below 25%. A charged lithium-ion battery can catch fire and/or explode if accidentally punctured.

    • Power off your iPhone before beginning disassembly.

    • Remove the two 6.7 mm-long pentalobe 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.

  2. iPhone 11 Pro Battery Replacement, Heat the lower edge of the phone: step 2, image 1 of 1
    • Heating the lower edge of the iPhone helps soften the adhesive securing the display, making it easier to open.

    • Use a hairdryer or heat gun or prepare an iOpener and apply it to the lower edge of the iPhone for about a minute in order to soften up the adhesive underneath.

  3. iPhone 11 Pro Battery Replacement, Apply suction cup(s): step 3, image 1 of 2 iPhone 11 Pro Battery Replacement, Apply suction cup(s): step 3, image 2 of 2
    • The next two steps demonstrate the iSclack, a handy tool that we recommend for anyone doing frequent repairs. If you aren't using the iSclack, skip down two steps for an alternate method.

    • If the plastic depth gauge is attached at the center of the iSclack, remove it now—it's not needed for larger iPhones like the iPhone 11 Pro.

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

    • Press both suction cups firmly into place.

    • If your display or back glass is badly cracked, covering it with a layer of clear packing tape may help the suction cups adhere. The iSclack also includes two pieces of tape for this purpose.

  4. iPhone 11 Pro Battery Replacement: step 4, image 1 of 3 iPhone 11 Pro Battery Replacement: step 4, image 2 of 3 iPhone 11 Pro Battery Replacement: step 4, image 3 of 3
    • Hold onto your iPhone securely and close the handle of the iSclack to slightly separate the screen from the rear case of the phone.

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

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

    • Skip the next two steps.

  5. iPhone 11 Pro Battery Replacement: step 5, image 1 of 2 iPhone 11 Pro Battery Replacement: step 5, image 2 of 2
    • If you're using a single suction handle, apply it to the bottom edge of the phone, while avoiding the curved portion of the glass.

    • 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.

  6. iPhone 11 Pro Battery Replacement, Lift the display slightly: step 6, image 1 of 3 iPhone 11 Pro Battery Replacement, Lift the display slightly: step 6, image 2 of 3 iPhone 11 Pro Battery Replacement, Lift the display slightly: step 6, image 3 of 3
    • 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.

  7. iPhone 11 Pro Battery Replacement, Separate the screen adhesive: step 7, image 1 of 3 iPhone 11 Pro Battery Replacement, Separate the screen adhesive: step 7, image 2 of 3 iPhone 11 Pro Battery Replacement, Separate the screen adhesive: step 7, image 3 of 3
    • 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 opening pick too far into the iPhone, or you may cause damage to internal components.

  8. iPhone 11 Pro Battery Replacement: step 8, image 1 of 3 iPhone 11 Pro Battery Replacement: step 8, image 2 of 3 iPhone 11 Pro Battery Replacement: step 8, image 3 of 3
    • Re-insert your pick at the bottom edge of the iPhone, and slide it up the right side to continue separating the adhesive.

    • 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.

  9. iPhone 11 Pro Battery Replacement: step 9, image 1 of 3 iPhone 11 Pro Battery Replacement: step 9, image 2 of 3 iPhone 11 Pro Battery Replacement: step 9, image 3 of 3
    • The top edge of the display is secured with both glue and clips.

    • Gently pull the right edge of the display down slightly (in the direction of the Lightning port).

    • Insert your pick into the top-right corner of the phone.

  10. iPhone 11 Pro Battery Replacement: step 10, image 1 of 2 iPhone 11 Pro Battery Replacement: step 10, image 2 of 2
    • Continue pulling the display down (toward the Lightning port) as needed in order to make a gap large enough for the pick.

    • Slide the pick to the top left corner and cut any remaining adhesive securing the display.

    • Again, 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.

  11. iPhone 11 Pro Battery Replacement, Remove the suction cup(s): step 11, image 1 of 1
    • 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.

  12. iPhone 11 Pro Battery Replacement, Open the iPhone: step 12, image 1 of 3 iPhone 11 Pro Battery Replacement, Open the iPhone: step 12, image 2 of 3 iPhone 11 Pro Battery Replacement, Open the iPhone: step 12, image 3 of 3
    • Open the iPhone by swinging the display up from the left side, like the back 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.

    • Remove two 1.3 mm long Y000 screws securing the battery cover bracket.

    • 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.

  13. iPhone 11 Pro Battery Replacement, Remove the battery connector cover: step 14, image 1 of 1
    • Remove the bracket.

  14. iPhone 11 Pro Battery Replacement, Disconnect the battery: step 15, image 1 of 2 iPhone 11 Pro Battery Replacement, Disconnect the battery: step 15, image 2 of 2
    • Use a spudger or a clean fingernail to pry the battery connector up from its socket 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.

  15. iPhone 11 Pro Battery Replacement, Unscrew the logic board cover screws: step 16, image 1 of 2 iPhone 11 Pro Battery Replacement, Unscrew the logic board cover screws: step 16, image 2 of 2
    • Use a Y000 driver to remove six 1.3 mm screws securing the logic board cover bracket.

  16. iPhone 11 Pro Battery Replacement, Remove the logic board cover bracket: step 17, image 1 of 1
    • Remove the bracket.

  17. iPhone 11 Pro Battery Replacement, Disconnect the OLED display cable: step 18, image 1 of 2 iPhone 11 Pro Battery Replacement, Disconnect the OLED display cable: step 18, image 2 of 2
    • Use a spudger or a fingernail to disconnect the OLED panel cable connector.

    • 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.

  18. iPhone 11 Pro Battery Replacement, Disconnect the front sensors + digitizer: step 19, image 1 of 3 iPhone 11 Pro Battery Replacement, Disconnect the front sensors + digitizer: step 19, image 2 of 3 iPhone 11 Pro Battery Replacement, Disconnect the front sensors + digitizer: step 19, image 3 of 3
    • Use a spudger or a fingernail to disconnect the front sensor assembly cable connector.

    • Use a spudger or a fingernail to disconnect the digitizer cable connector.

    • If any part of your screen doesn't respond to touch after your repair, disconnect the battery and then re-seat this connector, making sure it clicks fully into place and that there's no dust or other obstruction in the socket.

  19. iPhone 11 Pro Battery Replacement, Remove the display assembly: step 20, image 1 of 1
  20. iPhone 11 Pro Battery Replacement, Unscrew the lower battery connector cover: step 21, image 1 of 1
    • Use a Y000 driver to remove the four 1.5 mm screws securing the lower battery connector cover.

  21. iPhone 11 Pro Battery Replacement, Remove the cover: step 22, image 1 of 1
    • Remove the lower battery connector cover.

  22. iPhone 11 Pro Battery Replacement, Disconnect the lower battery connector: step 23, image 1 of 2 iPhone 11 Pro Battery Replacement, Disconnect the lower battery connector: step 23, image 2 of 2
    • Use a spudger to disconnect the lower battery flex cable by prying it straight up from its socket.

  23. iPhone 11 Pro Battery Replacement, Disconnect the Taptic Engine: step 24, image 1 of 2 iPhone 11 Pro Battery Replacement, Disconnect the Taptic Engine: step 24, image 2 of 2
    • Use a spudger to disconnect the Taptic Engine flex cable by prying it straight up from its socket.

    • Remove the three screws securing the Taptic Engine:

    • One 1.9 mm-long Y000 screw

    • One 1.4 mm-long Y000 screw

    • One 4.1 mm-long standoff screw

    • Standoff screws are best removed using a standoff screwdriver or bit.

    • In a pinch, a small flathead screwdriver will do the job—but use extra caution to ensure it doesn't slip and damage surrounding components.

  24. iPhone 11 Pro Battery Replacement, Remove the Taptic Engine: step 26, image 1 of 1
    • Remove the Taptic Engine.

  25. iPhone 11 Pro Battery Replacement, Unscrew the flex cable bracket: step 27, image 1 of 2 iPhone 11 Pro Battery Replacement, Unscrew the flex cable bracket: step 27, image 2 of 2
    • Use a Y000 driver to remove the two 1.4 mm screws securing the Lightning flex cable bracket.

  26. iPhone 11 Pro Battery Replacement, Remove the flex cable bracket: step 28, image 1 of 1
    • Remove the flex cable bracket.

  27. iPhone 11 Pro Battery Replacement, Disconnect the Lightning flex cable: step 29, image 1 of 3 iPhone 11 Pro Battery Replacement, Disconnect the Lightning flex cable: step 29, image 2 of 3 iPhone 11 Pro Battery Replacement, Disconnect the Lightning flex cable: step 29, image 3 of 3
    • Pry up to disconnect both of the Lightning flex cable connectors from the Logic board.

  28. iPhone 11 Pro Battery Replacement, Push the flex cable aside: step 30, image 1 of 2 iPhone 11 Pro Battery Replacement, Push the flex cable aside: step 30, image 2 of 2
    • Gently lift the Lightning flex cable and bend it slightly toward the bottom edge of the iPhone for better access to the battery underneath.

  29. iPhone 11 Pro Battery Replacement, Locate the adhesive pull-tabs: step 31, image 1 of 3 iPhone 11 Pro Battery Replacement, Locate the adhesive pull-tabs: step 31, image 2 of 3 iPhone 11 Pro Battery Replacement, Locate the adhesive pull-tabs: step 31, image 3 of 3
    • The battery is secured to the rear case with three pieces of stretch-release adhesive—one near the bottom edge of the battery, one near the top, and one on the right.

    • Each piece of adhesive has one or two black pull-tabs at the end, which are lightly adhered to the side edges of the battery.

    • In the following steps, you'll pull each tab to slowly stretch out the adhesive underneath the battery. These "command-strip" style adhesives lose their stick when stretched, so you can remove the battery with ease.

    • If the strips break, don't panic! They don't always work as intended. Keep reading for tips on removing broken strips.

  30. iPhone 11 Pro Battery Replacement: step 32, image 1 of 2 iPhone 11 Pro Battery Replacement: step 32, image 2 of 2
    • 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.

  31. iPhone 11 Pro Battery Replacement, Remove the bottom adhesive strip: step 33, image 1 of 3 iPhone 11 Pro Battery Replacement, Remove the bottom adhesive strip: step 33, image 2 of 3 iPhone 11 Pro Battery Replacement, Remove the bottom adhesive strip: step 33, image 3 of 3
    • Grab the pull tab with your fingers and slowly pull it away from the battery, toward the bottom of the iPhone.

    • 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.

  32. iPhone 11 Pro Battery Replacement: step 34, image 1 of 3 iPhone 11 Pro Battery Replacement: step 34, image 2 of 3 iPhone 11 Pro Battery Replacement: step 34, image 3 of 3
    • The top pull tabs lie very close to the Face ID sensors. If damaged, Face ID can only be repaired by Apple, so work with care. Don't touch the lenses with your fingers.

    • Peel down the battery adhesive pull tabs to un-stick them from the top edge of the battery.

  33. iPhone 11 Pro Battery Replacement, Remove the top adhesive strip: step 35, image 1 of 3 iPhone 11 Pro Battery Replacement, Remove the top adhesive strip: step 35, image 2 of 3 iPhone 11 Pro Battery Replacement, Remove the top adhesive strip: step 35, image 3 of 3
    • Grab both pull tabs at the same time, and slowly pull to stretch the adhesive away from the battery, toward the top 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.

  34. iPhone 11 Pro Battery Replacement: step 36, image 1 of 3 iPhone 11 Pro Battery Replacement: step 36, image 2 of 3 iPhone 11 Pro Battery Replacement: step 36, image 3 of 3
    • Peel up the two remaining battery adhesive pull-tabs to un-stick them from the right edge of the battery.

  35. iPhone 11 Pro Battery Replacement, Remove the side adhesive strip: step 37, image 1 of 3 iPhone 11 Pro Battery Replacement, Remove the side adhesive strip: step 37, image 2 of 3 iPhone 11 Pro Battery Replacement, Remove the side adhesive strip: step 37, image 3 of 3
    • Using the same procedure as before, pull both tabs at the same time to stretch and remove the remaining adhesive strip holding the battery in place. Try not to snag the adhesive on the edge of the iPhone.

    • Be careful not to fling the battery from the iPhone as the final adhesive strip comes out.

    • If you removed all the adhesive strips successfully, skip the next step.

    • Otherwise, continue with the next step below.

  36. iPhone 11 Pro Battery Replacement, How to remove a stuck battery: step 38, image 1 of 2 iPhone 11 Pro Battery Replacement, How to remove a stuck battery: step 38, image 2 of 2
    • If you're still having trouble removing the battery, 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.

  37. iPhone 11 Pro Battery Replacement, Remove the battery: step 39, image 1 of 1
    • 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.

    • Before you adhere the replacement battery, temporarily reconnect the battery connector to the motherboard socket. This ensures that the battery is properly aligned in its recess.

    • Adhere the battery, disconnect it, and continue reassembling your device.

    • If your new battery didn't come with adhesive preinstalled, refer to this guide for help replacing the adhesive strips.

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

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Compare your new replacement part to the original part—you may need to transfer remaining components or remove adhesive backings from the new part before installing.

To reassemble your device, follow the above steps in reverse order.

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 11 Pro Answers community for help.

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Jeff Suovanen

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Community

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Amer Khan - crwdns2853112:0crwdne2853112:0

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