This is a nice too have charger if you have multiple device types. I have an iphone for work, a galaxy so and multiple headsets. A cord like this makes it very convenient so you do not need to carry multiple cables that has the added bonus of being retractable. I have test the USB C with a s9, the iphone 7 with the iphone and a portable speaker with the micro usb. I have not tried charging these all at once. But besides that overall great buy and I highly recommend.