This device a is engineering prototype of S IV
GT-9502 of China Unicom which supports WCDMA and GSM of dual standby.
4.99" display screen
13MP camera, and front-facing and rear camera can work together.
it's a crack actually
Rxynos 5 Octa 1.8GHz eight-core CPU, PowerVR SGX 544 GPU
2GB RAM, 16GB ROM, 1080P display, Android 4.2.1
Stainless steel border
140mm*71.8mm*7.7mm, 138g in weight
smart scrolling, eyes and action sense