A friend of mine constantly turns off her cell phone when she wants to charge it. This, predictably, leads to many missed calls. I asked her why she turns it off and she said, “It charges faster when off.”
My sense is that is wrong. I would think when plugged in the cell phone is powered by the wall outlet and not its own battery. But then I do not know…maybe it always runs off the battery even while plugged in. Even so I would think the minimal power usage when in stand-by is more than overwhelmed by the wall power. If it does in fact take longer to charge while on I would think it’d be measured in mere seconds longer…certainly nothing substantial enough to notice a longer charge time.
But in the end I don’t know hence the question.