Compatibility:

Qi Wireless Charger

for iPhone:
for iPhone 6--- External(need to install the Qi receiver back case)
for iPhone 5/5S --- External(need to install the Qi receiver back case)
for iPhone 4/4S --- External(need to install the Qi receiver back case)

for Samsung:
S3(9300/9308) --- External(reserved interface,need to install the Qi receiver)
Note 2 (7100/7102) --- External(reserved interface,need to install the Qi receiver)
S4 --- External(reserved interface,need to install the Qi receiver)
Note 3 (7100/7102) --- External(reserved interface,need to install the Qi receiver)
S5 --- External(reserved interface,need to install the Qi receiver)
Note 4 --- External(reserved interface,need to install the Qi receiver)
S6 --- Qi receiver built-in

for Nokia:
920 --- Qi receiver built-in
928 --- Qi receiver built-in
1020 --- Qi receiver built-in
925 --- External(reserved interface,need to install the Qi receiver)
720 --- External(reserved interface,need to install the Qi receiver)
820 --- Built-in(need to replace the battery cover)
1320--- Built-in(need to replace the battery cover) 
1520--- Built-in
930 --- Qi receiver built-in

for HTC:
Droid DNA --- Built-in
Butterfly --- Built-in
Inceredible 4G LTE --- Built-in
8X --- Built-in
Thunderbolt --- Built-in
Rzound --- Built-in

for Google:
Nexus 4 --- Built-in
Nexus 5 --- Built-in
Nexus 6 --- Built-in
Nexus 7 Tablet II  2013  --- Built-in

for LG:

G3 --- Built-in(need to replace the battery cover) 
D1L --- Built-in
LTE2 --- Built-in
Revolution--- Built-in
Spectrum 2--- Built-in
Optimus 2--- Built-in

Blackberry Z30

Sharp SH-07D/04D/02D/13C

Panasonic Eluga V P-06D/ P-02E

NEC MEDIAS PPN-01D/ XN-04E

Motorola Droid Bionic/ Droid 3/ Droid 4