So I got the Belkin 15W for the X, and it seems that the phone slides off slowly the charger and also rotates a bit. I tried a few times to make sure. The phone sits on the camera bump while charging so this might be the reason that it slides. If the camera bump is off the pad, then the phone stops charging after a couple of seconds (blinks red) as you can see in the video here. Any ideas before I take this back?