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After attempting every possible repair, your phone still doesn't function correctly. This suggests that the issue is the motherboard, but with this guide, even this component can be replaced.
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Remove the two 4.5mm screws in the bottom left and right corners of the device using a T4 Torx Screwdriver.
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Holding the device in your hand, push the screen towards the top of the phone until it disconnects from the base of the phone.
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Use a plastic opening tool to lift the screen from the phone.
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Use tweezers to remove the yellow tape covering the lcd/digitizer cable connector.
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Carefully lift up the black locking tab to release the lcd/digitizer cable.
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Lift up the screen further to reveal another cable at the top of the device connecting the motherboard to the screen.
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Use tweezers to lift the black bar on top of the ZIF connector.
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Pull the ribbon cable out of the connector with tweezers.
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Now that there are no cables connecting the screen to the motherboard, remove the screen.
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Remove the two 3.5mm Torx T4 screws securing the rear facing camera.
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Using tweezers, remove the metal shield protecting the rear facing camera.
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Use a plastic opening tool to lift up the rear camera.
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Use tweezers to lift and unlock the black bar on top of the rear camera's ZIF connector.
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Pull the camera out of the connector.
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Remove the two 3.5mm Torx T4 screws securing the headphone jack cable/cover.
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Using tweezers, disconnect the headphone jack cable/cover and remove it. The headphone jack will stay where it is.
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Using a plastic opening tool or tweezers, disconnect the power button connector.
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Carefully peel back the adhesive cable with the tweezers so it is not in the way of the motherboard.
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Disconnect the battery from the motherboard by lifting up with the plastic opening tool near the base of the cable.
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Bend the battery cable straight up and out of the way of the motherboard.
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Using tweezers, peel back the adhesive covering the speaker connector.
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Using tweezers, disconnect the speaker connector by lifting underneath the base of the connector.
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Locate the sim card/micro sd tray on the side of the device.
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Push a small rod, such as a paper clip or sim card tool, into the opening to eject and remove the tray.
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Remove the six 3.5mm Torx T4 screws securing the motherboard to the device frame.
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Carefully pry up the motherboard from the frame using a plastic opening tool.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
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