Einleitung
The motherboard acts as the "brain" of the phone. Any damage the phone sustains to this region generally causes major malfunctions; thus, you should take extra care while removing/replacing this piece.
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First, on the back of the phone find the silver button on the top left corner of the phone.
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Simultaneously push down the button and slide the back plate down to reveal the battery.
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Grab the lower edge of the battery at the two bottom corners.
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Pull upward on the edges to remove the battery.
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Push the metal slider towards the top of the phone until it clicks out of the original position.
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Gently slide out and remove the SIM card.
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Grip the antenna and twist it counterclockwise to loosen it.
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When it has been loosened all the way, pull gently to remove the antenna piece.
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Using a pin, gently pry the top two screw covers off.
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The large cover in the upper left of the back plate does not need to be removed.
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Next, insert a spudger into the marked holes, one at a time, and pry away from the phone to release the internal tabs.
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Then, separate and detach the rear casing.
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Make sure you don’t break the ribbon cables that attach to the side buttons when removing the motherboard.
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Lift out the motherboard only after all cables have been disconnected. Try to touch it only from the sides.
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To reassemble your device, follow these instructions in reverse order.
