Nokia lumia 520 turned off automatically while talking over call and the battery was about 15%.Now its not turning on even charging ,its not even showing the charging icon.
That puts the chip inside the battery into a "coma." Leave it plugged in for a few hours and don't interrupt the cycle by pushing buttons or disconnecting the charger. It will "wake up" and show about 3-5% and then start charging normally. Let it charge to 100% before disconnecting from charger and then resume normal operations.
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