Not being a big tech person, I didn't realize that there are cables, and then there are cables... right, whaaaa... exactly.
OK, so I picked up this charge and sync cable because, well that's what I thought I was looking for. A cable that can pass both power and data back and forth seamlessly and effectively. My primary reason for this cable was to fast charge my Samsung GS7 via a portable battery pack that's equipped with QC2.0. I verified that the phone was also QC2.0 compatible, which it was.
Well, apparently, not all cables are built the same. Upon using this cable, the phone did NOT display fast charge. To ensure there was nothing wrong with my portable pack, I used the cable from my Mophie Juice Pack; and lo and behold, "Fast Charging" came on instantly.
So, I did some digging, and well, you got it, the cable does matter. For fast charge, you need a high speed cable... d'uh. I can't really bad mouth this cable as it never claimed to be "high speed", and let's face it, who would advertise their own deficiencies? In the end, it's on me, but at three bucks, I'm not going to sweat it...