Introduction
Tools
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Take a bus ticket or anything else that has a thickness of 0.5-0.6 mm.
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Cut the ticket to form a triangle.
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Insert the triangle in the gap between the button and the chassis.
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Cut the part of the ticket that is out of the chassis.
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Now with a paper clip tests if it works.
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If it works remount the back cover. If i doesn't work probably the problem is the button and not the contact and you need to replace it.
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Conclusion
To reassemble your device, follow these instructions in reverse order.
my power button is broken down ,and i have unfortunately launched app corner,so how can i exit from app corner mode, pls tell if there is any solution
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