Introduction

This guide shows how to replace the motherboard, which is necessary to replace other components.

Turn off the device. Prepare an iOpener and lay it along one edge of the display for about 90 seconds to soften the adhesive underneath. Alternatively, you may use a heat gun or hair dryer to heat the adhesive.
  • Turn off the device.

  • Prepare an iOpener and lay it along one edge of the display for about 90 seconds to soften the adhesive underneath. Alternatively, you may use a heat gun or hair dryer to heat the adhesive.

  • Use a suction cup to pull up on the display and create a slight gap between the display and the phone's enclosure.

    • If your display is cracked, cover it with packing tape to help the suction cup adhere and to prevent glass shards from popping loose.

  • Insert an opening pick into the gap.

  • Slide the opening pick around the perimeter of the display, slicing through the adhesive that secures it.

This one step has broken my screen and I didn’t even manage to remove it. I suspect it was the amount of heat that was applied as the left side of the screen, the side which I applied the heat, the pixels are blue/pink instead of white. The bottom inch of the screen is black. The touch screen is sporadic, which makes the phone unusable. After about 20 minutes of applying heat with the iOpener and the screen not budging, it eventually raised enough for me to get the blue opening pick. As I slid the pick up, I notice a tiny crack forming on the screen, so I gave up at this point, not wanting to break the screen. When I turned the phone back on, I noticed the damage I’ve mentioned. So I don’t know if it was the heat, or the pressure of the pick, but the damage matches the iOpener pack.

Neil Martin - Reply

Considering the instruction says to apply heat for 90 seconds and you did it for 20 minutes, I'd say it's a safe bet you burned your screen.

Andrew Bowman - Reply

When reassembling, does the adhesive still hold the phone together when closed or do we need to apply more adhesive?

Jess Haddow - Reply

Slowly pull the screen off the device with your hands.
  • Slowly pull the screen off the device with your hands.

  • Be careful to not pull too hard on the ribbon cable behind the display when lifting the screen off of the device.

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Using a screwdriver, remove the two black 3.5 mm T5 screws that secure the display cable connector bracket.
  • Using a screwdriver, remove the two black 3.5 mm T5 screws that secure the display cable connector bracket.

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Use tweezers to remove the bracket that holds the display connector in place.
  • Use tweezers to remove the bracket that holds the display connector in place.

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Use a spudger to remove the connector from the device, and remove the screen completely.
  • Use a spudger to remove the connector from the device, and remove the screen completely.

  • Before applying new adhesive, clean the edges of the frame, taking special care to remove any small glass fragments. Clean adhesion areas with high concentration isopropyl alcohol (at least 90%).

  • Be sure to turn on your phone and test your repair before installing new adhesive and resealing the phone.

  • The replacement adhesive should only be applied to the edges of the frame, but may come with the center filled in.

    • To remove the unnecessary center section of the adhesive strip, carefully peel away the perforated rectangle in middle of the white backing. At the same time, peel up the black adhesive underneath the white backing.

    • Only adhesive for the edges of the frame should remain.

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Using a screwdriver, remove the nine 3.5 mm T5 screws holding the  mid-frame in place. The device's mid-frame has 9 screws total, but in the device shown, there are only 8.
  • Using a screwdriver, remove the nine 3.5 mm T5 screws holding the mid-frame in place.

  • The device's mid-frame has 9 screws total, but in the device shown, there are only 8.

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Wedge an opening tool into the notch that is located at the top left part of the phone. Slide the opening tool across the seam of the device and lift the mid-frame.
  • Wedge an opening tool into the notch that is located at the top left part of the phone.

  • Slide the opening tool across the seam of the device and lift the mid-frame.

  • Hearing clicks as you lift the mid-frame off is normal because of the clasps holding it down.

  • When lifting the mid-frame, be careful not to damage the ribbon cable connecting the earpiece speaker to the motherboard.

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Use a spudger to disconnect the earpiece speaker cable from the motherboard.
  • Use a spudger to disconnect the earpiece speaker cable from the motherboard.

  • Remove the mid-frame completely by lifting it off the device.

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Use a SIM ejection tool to remove the SIM card tray located at the top left of the device. Use a SIM ejection tool to remove the SIM card tray located at the top left of the device.
  • Use a SIM ejection tool to remove the SIM card tray located at the top left of the device.

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Using a spudger, disconnect the battery ribbon cable from the motherboard.
  • Using a spudger, disconnect the battery ribbon cable from the motherboard.

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Use tweezers to lift up the adhesive strip at the top of the battery, and peel it back to expose the connector underneath.
  • Use tweezers to lift up the adhesive strip at the top of the battery, and peel it back to expose the connector underneath.

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Use a spudger to disconnect the  charging port ribbon cable from the motherboard.
  • Use a spudger to disconnect the charging port ribbon cable from the motherboard.

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Use a spudger to disconnect the thin, black ribbon cable connecting the power and volume buttons to the motherboard.
  • Use a spudger to disconnect the thin, black ribbon cable connecting the power and volume buttons to the motherboard.

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Use a spudger to disconnect the black signal wire attached to the motherboard.
  • Use a spudger to disconnect the black signal wire attached to the motherboard.

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Use a spudger to disconnect the white signal wire attached to the motherboard.
  • Use a spudger to disconnect the white signal wire attached to the motherboard.

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Remove the two silver 2.5 mm T5 screws holding the motherboard in place. Remove the two silver 2.5 mm T5 screws holding the motherboard in place.
  • Remove the two silver 2.5 mm T5 screws holding the motherboard in place.

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Use tweezers to lift the motherboard from the device.
  • Use tweezers to lift the motherboard from the device.

  • When lifting the motherboard, be careful not to damage the ribbon cable connecting the fingerprint sensor to the motherboard.

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While holding the motherboard up with tweezers, use a spudger to disconnect the fingerprint sensor cable from the motherboard.
  • While holding the motherboard up with tweezers, use a spudger to disconnect the fingerprint sensor cable from the motherboard.

  • Remove the motherboard completely from the device.

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Conclusion

To reassemble your device, follow these instructions in reverse order.

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Camaryn Chambers

Member since: 04/26/2017

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Cal Poly, Team S23-G1, Livingston Spring 2017 Member of Cal Poly, Team S23-G1, Livingston Spring 2017

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One Comment

Where do you buy a new motherboard?

Travis Smith - Reply

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