Einleitung
Replace the motherboard to give your phone a fresh start.
Werkzeuge
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Pull and twist the pin near the bottom left-side of the phone to remove it from the headphone jack.
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Insert the pin into the SIM card opening located on the right-side of the phone.
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Gently push in until the SIM card clicks, and then pull the pin and SIM card out.
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Repeat this process for the additional SIM card.
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Rotate the phone 180 degrees so that the bottom of the phone is now facing up.
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Firmly push up on the back panel with your thumbs.
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Lift up the back panel from the top right corner and gently pull it away from the phone.
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Remove the following screws securing the logic board to the main frame:
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Five 2mm Phillips #000 screws
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Two 2.5mm Phillips #000 screws
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Push down the yellow plastic lining at the top of the battery and remove the two 2.5mm Phillips #000 screws.
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Use the flat end of a spudger to gently snap open the first clip located on the the right arm of the retaining plate.
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Use the flat end of a spudger to gently snap the second clip located on the left arm of the retaining plate.
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Use the flat end of a spudger to gently lift the upper retaining plate from the phone.
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Use the pointy end of a spudger to gently pry the following connectors out of their sockets:
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silver LCD cable connector
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silver Headphone jack cable connector
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Use the pointy end of a spudger to gently pry the following connectors out of their sockets.
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Sliver Micro-USB cable connector
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Copper battery cable connector
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Remove the two 2mm Phillips #000 screws securing the copper flex cable to the silver metal tab.
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Wedge the flat end of a spudger underneath the bottom left of the metal tab.
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Run the spudger along the bottom edge of the metal tab and gently pry upward.
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Use the pointy end of a spudger to wedge underneath the black circular vibrator motor near the bottom right of the phone.
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Slowly lift up to separate the black circular vibrator motor from the adhesive.
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Hold down the bottom left corner of the motherboard and slowly lift the right side out of the main frame.
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Gently wiggle the logic board to release it from the phone.
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To reassemble your device, follow these instructions in reverse order.