Usually this product does not work for several reasons 
1.It's working principle is electromagnetic induction,So cellphone need to be provided with receicer to wireless charger.The receiver and transmitter that meet QI standard can be wireless charging.Maybe there is not receiver in you phone. 
2.For QI devices,the center of phone need to align with transmitter. 
3.For LG G3,G2,Nexus4,Nokia 920,The receiver is down off the center about 20mm,so your need to put your phone up the center about 20mm.When the phone align the transmitter,the indicator in the corner will become green. 
4.If there is a case with qi phone,Pls note:The thickness of case can't exceed 5mm,the width of the phone with the case can't exceed 83mm,And the center of back case can't be metal material. 

Specifications 
Product Standard:Qi 
Input:DC5V/2A 
Output:DC5V/1A 
Efficiency:>70% 
Working distance:5mm 
Working temprature:About 45 degrees 
Package Size:5.5*5.4*5.8 inch 
Product Size:5.3*4.2*5.3 inch 
Certifications:CE,FCC 

Why Choose Gelin Company