Christian Leo 5 Since Samsung Galaxy S7 is incompatible to MHL, I bought it for displaying my Galaxy phone screen on my HDMI-supported monitor.It works perfectly. I was a little confused when reading some negative reviews before my purchase, but it is actually so good at that cheap price. Notice that powering directly by a charger (AC adapter) could make the device not work properly and automatically reboot. I recommend you should power the device by a stable USB port. In case no USB port is available in your monitor like mine, an output USB port of PC or Wifi Router might be alternative sources.