So I got an iphone 8 plus. I also got the Anker quickcharge wireless charger for this iphone. It has a qc compatible power adapter and a circular device to place the iphone on. However the quick charging doesn't work. From what percentage battery to what does the qc take place? I was at 71% battery and it went to 75% in normal time like the charger included with the phone. Any tips would be useful. Thanks!