Introduction
Using a hex 2.0 driver, you will take off the top cover in order to access the modem. With a pair of tweezers you will be able to remove and replace the modem.
Tools
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            Remove the four screws(4mm hex head) on the corners of the device with a Hex 2.0 Screwdriver. 
 
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            Slightly lift the modem to reveal the brown ribbon connector and metal connection plate, located on the bottom of the modem. 
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.