Posted by a reviewer on Amazon

It installs under the back cover and is held in place by a narrow piece of doublesided tape

Posted by a reviewer on Amazon

The tape has a peel off paper cover incorrectly labeled tear which i found confusing

Posted by a reviewer on Amazon

There is only one position to match the electrical contacts

Posted by a reviewer on Amazon

Its obvious although there are no instructions

Posted by a reviewer on Amazon

Here are some responses to other critical reviews that may help you decide or to troubleshoot similar issues1 i bought this for my wifes galaxy s5 and i have a galaxy s7 with wireless charging builtin

Posted by a reviewer on Amazon

Both require the phone to be somewhat centered on the charger or it will not charge

Posted by a reviewer on Amazon

This isnt a weakness of the bestfire charging receiver

Posted by a reviewer on Amazon

Wireless chargers do have fast charge versions 2a output that work a bit faster but never as fast as plugging a phone into a fastcharge usb charger