Where is the NFC scanner of my phone located?

iPhone

The NFC scanner is located on the top middle part on the backside of your phone (approx. on the height of your camera). 

 

Samsung

The NFC scanner is located in the center on the backside of your phone. 

 

Huawei

The scanner is located in the top right corner on the backside of your phone. Hence, on the opposite side of your camera, which can be found in the top left corner.