Hi, I shut my phone down yesterday because it was very low on power (was using Google Maps & it just quickly drains the battery) & I have had it harging for at least 24 hours now & it won't start. I keep trying to start it up, but, nothing happens. As I use it for my business appointments, it's very important I access this information asap so as not to inconvenience any clients, or, myself. I'd be very happy if someone could help me asap. Tks.