I've had my wireless charger for about three weeks now. Initially I was pretty impressed at the speed, not far off a mains charger, but the last couple of days it is really slow, was on for 3 hours this morning on my desk and put an additional 10% in. Also the phone now seems to be getting hotter than usual when lifting it off the charger. Has anyone else had a problem with the speed of charging slowing right down? Or maybe something in the background is draining my battery quickly, anyway I can check what apps are using my battery? I'm trying to charge using the USB cable from my computer now, hopefully that will tell me if its the phone or the wireless charger...