Introduction
Tools
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            Using a Phillips #1 screwdriver, remove the 4.8mm screw on the battery cover by twisting the screwdriver counter-clockwise. 
 
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            Remove the two AAA batteries by pulling on one end of the battery and lifting it straight out. 
 
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            Lift directly up to remove the switch and lay the wire down to the side. 
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            Once the switch has been taken out you can remove the switch's casing. 
 
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To reassemble your device, follow these instructions in reverse order.
2 comments
Good work.
I have done it the same way,
the wire at the switch was bad soldered,
but it was easy to repair it and i soldered it new.
Nice.
My baby’s phone keeps turning itself off. The switch is in the ON position but it keeps turning OFF and singing the off song. I have opened the phone and even held the switch to ON but it still keeps turning OFF even without the switch moving. Any suggestions?