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

2600mAH battery

Suspension review

smart scrolling, eyes and action sense