Introduction
This guide demonstrates how to remove and replace the button keys of am iDea USA CT702 in order to preserve the function of the device.
Tools
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Place the device face up.
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Use a plastic opening tool to gently pry open the black panel around the portholes.
 
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Pry the rest of the back off; slowly apply pressure from each side to break each clip connection.
 
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Replace the button keys, starting with the outer and ending with the innermost key.
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To replace the back cover, follow the first three steps in reverse order.
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.