Introduction
To complete this guide you will have to disassemble the handset and use a soldering iron to replace the circuit board. Other than the soldering process, the guide steps are medium in difficulty to complete. After completing this guide, users should have a fully operating, handset circuit board and screen.
Tools
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            Slide the battery cover toward the bottom of the phone. 
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            Lift and remove the back cover from the phone. 
 
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            Remove the battery from its compartment. 
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            Pinch the end of cord where the battery is attached to the phone and pull up gently. 
 
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            Use the plastic opening tool to carefully separate the two halves of the case. 
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            Slowly work around the entire case to fully separate the halves before pulling them apart. 
 
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            Carefully grasp either side of the circuit board and lift it straight out of the front half of the case. 
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            Set the board in the lower half of the case. 
 
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            Using the desoldering braid and soldering iron, remove the solder around the cable for the speaker. 
 
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To reassemble your device, follow these instructions in reverse order.