Introduction
This guide shows how to remove and replace the logic board for your iPhone 16 Pro Max.
The logic board has connectors on its top and bottom, so you may need to remove the screen to complete the repair. This procedure will attempt to connect the logic board without removing the screen first. If you remove the screen, you'll also need screen adhesive.
You'll need replacement back glass adhesive to complete this repair.
After your repair, calibrate authentic Apple replacement components using Repair Assistant.
What you need
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Unplug any cables from your iPhone.
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Hold the power and either volume buttons, and slide to power off your iPhone.
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If your screen or back glass is badly cracked, lay overlapping strips of packing tape over the glass to protect yourself and make disassembly easier.
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Use a P2 pentalobe driver to remove the two 7.4 mm-long screws on either side of the charge port.
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Measure 3 mm from the tip and mark the opening pick with a permanent marker.
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Tool used on this step:iOpener$14.99
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Use a hair dryer or heat gun to heat the bottom edge of the back glass until it's hot to the touch.
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A delicate cable connecting the back glass to the iPhone, right next to the volume up button. Don't insert your pick here to avoid slicing the cable.
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Multiple spring contacts around the perimeter of the iPhone.
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Slide the opening pick along the bottom edge to slice the adhesive.
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Leave the opening pick in the bottom-left corner to prevent the adhesive from resealing.
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Use a hair dryer or heat gun to heat the left edge of the back glass until it's hot to the touch.
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Insert a second opening pick into the bottom-left corner, close to the existing pick.
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Slide your pick along the left edge to separate the adhesive and release the metal clips.
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Leave this pick inserted in the top-left corner to prevent the adhesive from resealing.
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Use a hair dryer or heat gun to heat the top edge and top-right corner of the back glass until it's hot to the touch.
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Insert a third opening pick into the top-left corner.
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Slide the opening pick along the top edge and around the top-right corner, stopping above the volume up button.
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Leave this pick inserted to prevent the adhesive from resealing.
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Use a hair dryer or heat gun to heat the right edge of the back glass until it's hot to the touch.
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Insert a fourth opening pick into the bottom-right corner.
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Slide the opening pick around the corner and up the right edge, stopping below the volume down button.
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Leave this pick inserted to prevent the adhesive from resealing.
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Swing open the back glass to the right of the iPhone to separate the remaining adhesive.
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Support the back glass with a clean, sturdy object.
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Use a tri-point Y000 driver to remove the three screws securing the battery connector cover:
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Two 1.3 mm‑long screws
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One 1.0 mm‑long screw
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Use the point of a spudger to pry up and disconnect the battery press connector.
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Use a tri-point Y000 driver to remove the four screws securing the back glass connector cover:
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Two 1.3 mm‑long screws
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Two 1.0 mm‑long screws
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Use the point of a spudger to pry up and disconnect the back glass connector.
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Use the point of a spudger to pry up and disconnect the earpiece speaker and 5G mmWave antenna press connectors.
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Use a spudger to pry up and disconnect the seven silver press connectors from the top of the logic board.
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This image shows the display connector underneath the logic board. The next two steps show how to disconnect this connector from the bottom of the logic board.
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Insert the flat edge of an opening pick between the battery and the left edge of the logic board. Hold the pick in place with your fingers.
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Insert the flat end of a spudger underneath the right edge of the logic board.
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Gently pry with the spudger to lift the logic board and disconnect the display connector.
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Hold the logic board so that the front sensor cable is close to its connector.
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Align the front sensor cable connector carefully over its logic board socket.
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Use the point of a spudger or your finger to press the connector until it clicks into place.
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Gently bend all the loose press connectors out of the way so you can lay the logic board in place.
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Lay the logic board in its recess.
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Make sure the logic board rests in place against its screw posts. The posts will properly align the board to the display connector underneath it.
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Align the top edge of the earpiece speaker with the top edge of the frame.
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Lay the earpiece speaker into its recess.
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Tool used on this step:Tweezers$4.99
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Use blunt nose tweezers or your fingers to remove large pieces of adhesive from the frame perimeter.
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Use a spudger to scrape the adhesive residue off of the frame.
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If the adhesive feels stubborn, apply some heat using a hair dryer or heat gun and try again.
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Tool used on this step:Microfiber Cleaning Cloths$3.99
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If you're reusing your back glass, apply a few drops of highly-concentrated isopropyl alcohol (over 90%) to a microfiber or lint-free cloth and wipe around the perimeter to prepare the surface for new adhesive.
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Wrap a lint-free cloth or a coffee filter over the point of a spudger and apply a few drops of highly-concentrated isopropyl alcohol (over 90%) to it.
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Wipe in one direction along the perimeter of the frame to clean the adhesive residue.
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Lay the adhesive sheet over the frame to determine its proper orientation.
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Use your finger or a spudger to press and connect the battery press connector onto the logic board.
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Align the back glass connector cover by its screw holes and lay it in place.
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Use your fingers or a spudger to peel away all perimeter liners, exposing the adhesive.
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Check the frame and back glass for any stray liners and remove them. There should be no liners remaining.
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Use a hair dryer, heat gun, or an iOpener to heat the back glass perimeter until it's slightly too hot to touch.
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Use your fingers to firmly squeeze around the perimeter of the iPhone.
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Use a P2 pentalobe driver to install the two 7.4 mm-long screws on either side of the charge port.
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After your repair, calibrate genuine replacement parts using Apple's Repair Assistant. Navigate to Settings → General → About → Parts & Service History, tap Restart & Finish Repair, and follow the onscreen prompts.
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 Answers community for help.
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