Introduction
If your phone is not responding to a known good memory card there might be a problem with the socket. This repair may seem difficult, but the component itself is very easy to remove once exposed.
Tools
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            Remove the battery by prying the bottom of the battery upward. 
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            Once the battery is angled up, pull it away from the top of the device. 
 
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            Slide the SIM card from underneath the holding bracket upward toward the battery connector pins. 
 
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            Use your T5 Torx screwdriver to remove the two black 5.57mm Torx head screws underneath the keyboard. 
 
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            Use the plastic opening tool to remove the frame of your device. 
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            Once the case is loosened from the device, slide the case away from the top of the phone. 
 
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            Gently lift the bottom of the keyboard upward. 
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            Pull the keyboard away from the bottom of the LCD display and lift upward. 
 
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            Remove the top two Torx head 4.13mm steel screws with your T5 Torx screwdriver. 
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            Lift the clear plastic cover directly upward. 
 
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            Grip the motherboard by the screen 
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            Lift the board away from the base of the housing and vertically up. 
 
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            Use plastic opening tool to pry away tiny metal arm that is holding the socket in place. 
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            Lift SD memory card socket away from phone housing till it is removed. 
 
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            Align new SD memory card socket into the socket housing and connect tiny metal arm. 
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            Apply pressure to the top of new SD Memory card socket. 
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            Once the SD memory card socket is correctly placed in the housing you are done. 
 
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To reassemble your device, follow these instructions in reverse order.