How to Turn on the LG Optimus Without the "On" Button
If your LG Optimus phone will not power on using the power button, and you cannot access the touch screen, it is possible to power the on LG. The task requires removing and reinserting the battery, which performs a hard reset on the device.
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Instructions
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Place the LG Optimus face-down on a soft, lint-free cloth.
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Detach the plastic back plate from the phone. Press up on the arrow as you pull the plate away from the device.
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Remove the battery from the phone, then reinsert it. Replace the battery cover. The phone will initiate a reboot. The "LG" logo will appear, then the phone's menu will load.
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