I thought this was the case, but for me it turned out that when my battery was totally empty, it turned off, and normal start did not turn it back on. Plugging it in did not display a "charging" image. I thought it was not charging, but when I finally did a hard restart, (10 second hold down of sleep and front button) it came up and was totally charged.
seems that there is no charge indication when phone is turned off and not just asleep.