Introduction

The motherboard is the heart of your phone. In certain circumstances, damage to the motherboard will cause intermittent problems, or even prevent the phone from turning on at all. If your motherboard has been damaged, it is important to consider why. If the phone has been damaged due to water intrusion, more components may have been damaged.

Anytime you are working near a circuit board, static electricity is a concern. If possible, be sure to discharge any static electricity that may have built up on you or your tools before diving into the motherboard. If possible, conduct your work on a static-free surface, such as plastic, or even paper.

Before disassembling the phone, remove the SIM card and the MICRO-SD card, if equipped. Begin taking apart the device by prying apart the back cover from the assembly using the plastic opening tool. Continue working around the edge of the phone using the plastic opening tool.
  • Before disassembling the phone, remove the SIM card and the MICRO-SD card, if equipped.

  • Begin taking apart the device by prying apart the back cover from the assembly using the plastic opening tool.

  • Continue working around the edge of the phone using the plastic opening tool.

  • When all the edges have been lifted apart, use your hands or plastic opening tool to peel the back plate from the battery. There are small adhesive strips between the back cover and the battery, so take care not to crack the back cover while prying open.

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The adhesive strips are shown in the orange boxes. Be sure not to use too much force to pull off the back cover, or you may risk snapping the back cover.
  • The adhesive strips are shown in the orange boxes. Be sure not to use too much force to pull off the back cover, or you may risk snapping the back cover.

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Remove the red rubber screw cover with a pair of tweezers Remove the red rubber screw cover with a pair of tweezers Remove the red rubber screw cover with a pair of tweezers
  • Remove the red rubber screw cover with a pair of tweezers

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Use the T-5 Torx bit to remove the two silver 3.3 mm screws with integrated washers. Use the T-5 Torx bit to remove the two silver 3.3 mm screws with integrated washers.
  • Use the T-5 Torx bit to remove the two silver 3.3 mm screws with integrated washers.

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Lift the battery leads to the upward position. The ribbon cable is very thin, be gentle.
  • Lift the battery leads to the upward position. The ribbon cable is very thin, be gentle.

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Use the plastic opening tool around the edges to loosen the battery. Once the battery is loose, carefully lift from the bottom edge and remove the battery. Once the battery is loose, carefully lift from the bottom edge and remove the battery.
  • Use the plastic opening tool around the edges to loosen the battery.

  • Once the battery is loose, carefully lift from the bottom edge and remove the battery.

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The battery may now be removed.
  • The battery may now be removed.

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Begin by removing the back cover using the plastic opening tool. There are adhesive strips attached to the back cover, so take care when prying case to prevent cracking The adhesive strips may stay on the back cover or the battery. The adhesive strips may stay on the back cover or the battery.
  • Begin by removing the back cover using the plastic opening tool. There are adhesive strips attached to the back cover, so take care when prying case to prevent cracking

  • The adhesive strips may stay on the back cover or the battery.

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The back case portion may be removed after the battery has been removed. Use the T5 Torx screwdriver to remove the 10 coarse-thread 5mm screws
  • The back case portion may be removed after the battery has been removed.

  • Use the T5 Torx screwdriver to remove the 10 coarse-thread 5mm screws

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Now with the screws removed, use the plastic opening tool to lift the edges of the front assembly. Continue to use the plastic opening tool around the edges of the device to remove the front assembly. The speaker is located in the upper corner of the case. It it attached with adhesive and can be removed by gently prying with the plastic opening tool
  • Now with the screws removed, use the plastic opening tool to lift the edges of the front assembly.

  • Continue to use the plastic opening tool around the edges of the device to remove the front assembly.

  • The speaker is located in the upper corner of the case. It it attached with adhesive and can be removed by gently prying with the plastic opening tool

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Begin by removing the 10 Torx T5 motherboard baseplate screws The back chassis can now be removed.
  • Begin by removing the 10 Torx T5 motherboard baseplate screws

  • The back chassis can now be removed.

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Remove the 10 Torx T5 screws, that hold the metal frame to the motherboard. Remove the 10 Torx T5 screws, that hold the metal frame to the motherboard.
  • Remove the 10 Torx T5 screws, that hold the metal frame to the motherboard.

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After following the steps to access the motherboard, you are ready to remove the touchscreen and LCD display. Use the plastic opening tool to separate the LCD display from the motherboard. The touchscreen may separate from the LCD, however they are both connected to the motherboard as one unit.
  • After following the steps to access the motherboard, you are ready to remove the touchscreen and LCD display.

  • Use the plastic opening tool to separate the LCD display from the motherboard.

  • The touchscreen may separate from the LCD, however they are both connected to the motherboard as one unit.

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Remove the ribbon cable from the back of the lcd using the plastic opening tool or spudger. Use care removing the ribbon cables. They are very thin and are broken easily. Use care removing the ribbon cables. They are very thin and are broken easily.
  • Remove the ribbon cable from the back of the lcd using the plastic opening tool or spudger.

  • Use care removing the ribbon cables. They are very thin and are broken easily.

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Remove the ribbon cable connecting the LCD display to the motherboard, be mindful that the ribbon cable is very thin. With the LCD display removed, remove the ribbon cable connecting the touchscreen to the motherboard
  • Remove the ribbon cable connecting the LCD display to the motherboard, be mindful that the ribbon cable is very thin.

  • With the LCD display removed, remove the ribbon cable connecting the touchscreen to the motherboard

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The LCD display and the touchscreen may now be replaced. The LCD display and the touchscreen may now be replaced.
  • The LCD display and the touchscreen may now be replaced.

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Remove the three Torx T5 screws that locks the front facing camera to the motherboard. Use the plastic opening tool to lift the ribbon cable from the motherboard. Use the plastic opening tool to lift the ribbon cable from the motherboard.
  • Remove the three Torx T5 screws that locks the front facing camera to the motherboard.

  • Use the plastic opening tool to lift the ribbon cable from the motherboard.

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Lift the rear camera our of the motherboard. Lift the rear camera our of the motherboard. Lift the rear camera our of the motherboard.
  • Lift the rear camera our of the motherboard.

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Use the plastic opening tool to lift the ribbon cable connector from the motherboard. Now both front and rear cameras have been removed.
  • Use the plastic opening tool to lift the ribbon cable connector from the motherboard.

  • Now both front and rear cameras have been removed.

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Now the motherboard is ready to be replaced and reassembled in reverse order. Now the motherboard is ready to be replaced and reassembled in reverse order.
  • Now the motherboard is ready to be replaced and reassembled in reverse order.

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Conclusion

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

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Gabriel Agaman

Member since: 10/28/2015

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UMass Dartmouth, Team 1-8, Miles Fall 2015 Member of UMass Dartmouth, Team 1-8, Miles Fall 2015

UMASSD-MILES-F15S1G8

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