Introduction
This guide will show you how to remove and replace the motherboard in the Microsoft Lumia 640 XL.
Tools
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            Place left palm on screen and right palm on the back. 
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            Press down with fingertips and pull to separate the back from the screen. 
 
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            Remove all ten T3, 4.09 mm screws. 
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            Lift mid-frame assembly from phone with flat side of a spudger. 
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.
One comment
Thanks, It was super
Yasmany -