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36 Chapter 3
4. Replace the four screws to secure the Mainboard to the Lower Cover.
5. Turn the smartphone over. Insert the two screws to secure the Mainboard to the Lower Cover.
Step Screw Quantity Screw Type
Mainboard
(red callout)
M1.6*3.5 2
Mainboard
(green callout)
M1.6*5 2
Step Screw Quantity Screw Type
Mainboard M1.6*2 2