Posted by a reviewer on Amazon

Yes its normal to hear it when charging

Posted by a reviewer on Amazon

Wireless fast charger is great lightweight of normal size though doesn’t come with a fast charge adaptive micro usb cable it’s sort of designed to use the samsung oem one which is fine but this also doesn’t work off a non adaptive cable

Posted by a reviewer on Amazon

I also have the original samsung qi charger and i am much happier with this over the samsung

Posted by a reviewer on Amazon

It has the ability to charge faster than the samsung

Posted by a reviewer on Amazon

With the samsung if it is not centered just right it will not charge

Posted by a reviewer on Amazon

Two minor drawbacks of this product is that 1 the usb cable is a little on the short side if youd like to set the pad up somewhere functional so youd need to supply a longer microusb cable and 2 no wall charger is included

Posted by a reviewer on Amazon

The latter is a little awkward and surprising considering that the instruction manual shows a wall charger

Posted by a reviewer on Amazon

However if you dont really care about the fast charging you could throw your phone from accross the room and could charge slower