A:Answer Once you plug in your Mophie charger/sanitizer you should see the light on the front of the Mophie illuminate and you are good to go. If your phone is not charging it may be one or two things: it is not centered on the top of the device. When placed on center, phone will "ping" once to confirm correct placement. I had the same problem and did not realize phone was off center, this corrected for me and now no problem. The white light will then begin to flash while it charges. Another possible reason phone is not charging is your phone case may be too thick (cases over 3 mm) or is not QI enabled. If greater than 3mm or not QI enabled, you will need to remove the case for charging. I have not had any problem charging with the case on.
Hope this answers your question.