简介
This is a prerequisite guide! This guide is part of another procedure and is not meant to be used alone.
This guide was performed on the SM-G998B/DS (international) model. Other models have an additional antenna cable sitting in the left edge of the midframe.
Use this guide to remove the motherboard assembly on a Samsung Galaxy S21 Ultra.
你所需要的
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Prepare an iOpener and apply it to the back cover for at least three minutes to loosen the adhesive underneath.
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Secure a suction handle to the bottom edge of the back cover, as close to the edge as possible.
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Lift the back cover with the suction handle to create a small gap between the back cover and the frame.
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Insert an opening pick into the gap you created.
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Slide the opening pick to the bottom left corner to slice the adhesive.
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Leave the opening pick in place to prevent the adhesive from resealing.
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Insert a second opening pick at the bottom edge of your phone.
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Slide the opening pick to the bottom right corner to slice the adhesive.
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Leave the opening picks in place to prevent the adhesive from resealing.
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在这个步骤中使用的工具：Tweezers$4.99
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Remove the back cover.
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This is a good point to power on your phone and test all functions before sealing it up. Be sure to power your phone back down completely before you continue working.
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Remove any adhesive chunks with a pair of tweezers or your fingers. Apply heat if you're having trouble separating the adhesive.
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If you're using custom-cut adhesives, follow this guide.
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If you're using double-sided tape, follow this guide.
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Insert an opening pick underneath the left bottom end of the NFC antenna and charging coil assembly.
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Carefully slide the opening pick along the bottom left edge of the assembly to separate it from the battery.
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Use a spudger to disconnect the charging coil by prying the connector straight up from its socket.
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Use a spudger to disconnect the NFC antenna by prying the connector straight up from its socket.
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Use a Phillips screwdriver to remove the five 3.9 mm-long screws securing the NFC antenna and charging coil assembly.
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在这个步骤中使用的工具：Tweezers$4.99
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Use a pair of tweezers or your fingers to carefully remove the NFC antenna and charging coil assembly.
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Use a spudger to disconnect the battery cable by prying the connector straight up from its socket.
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Use a Phillips screwdriver to remove the four 3.9 mm-long screws securing the loudspeaker assembly.
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Insert a spudger into the gap between the top edge of the loudspeaker assembly and the midframe.
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Use your spudger to pry up the loudspeaker assembly by tilting it downwards.
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Use a spudger to disconnect the display flex cable by prying the connector straight up from its socket.
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Use a spudger to disconnect the main and interconnect flex cables from the motherboard by prying their upper connectors straight up from their sockets.
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在这个步骤中使用的工具：Tweezers$4.99
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Use a spudger to disconnect the interconnect flex cable from the daughterboard by prying its bottom connector straight up from its socket.
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Use your fingers or a pair of tweezers to carefully remove the interconnect flex cable.
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Use a spudger to disconnect the main flex cable from the daughterboard by prying its bottom connector straight up from its socket.
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Use your fingers or a pair of tweezers to carefully remove the main flex cable.
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Use a Phillips screwdriver to remove the four 3.9 mm-long screws securing the earpiece speaker and laser AF module assembly.
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Use a spudger to disconnect the laser AF module and earpiece speaker flex cables by prying the connectors straight up from their socket.
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在这个步骤中使用的工具：Tweezers$4.99
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Grab the bottom right corner of the earpiece speaker and laser AF module assembly with a pair of blunt nose tweezers and carefully lift it upwards.
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Remove the earpiece speaker and laser AF module assembly.
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Use a spudger to disconnect the in-display fingerprint and antenna flex cables by prying the connectors straight up from their socket.
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Carefully bend both connectors to the side to free the motherboard.
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Use a spudger to disconnect the front facing camera cable by prying the connector straight up from its socket.
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Use a spudger to disconnect the power button flex cable by prying the connector straight up from its socket.
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Carefully bend the connector to the side to free the motherboard.
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Use a Phillips screwdriver to remove the 3.9 mm-long screw securing the camera module.
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Insert an spudger underneath the top edge of the motherboard next to the vibration motor.
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Use your spudger to pry up the motherboard by tilting it downwards and twisting it to the side at the same time.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
