China-based white-box smartphone vendor UMeox Mobile has joined the world's ultra-thin smartphone market by introducing its UMeox X5, which has a thickness of only 5.6mm.

　　The Umeox X5 is equipped with a 5.3-inch touchscreen and is powered by a dual-core processor set on Android 4.2.2 Jelly Bean. It has an 8-megapixel rear camera and a 3-megapixel front camera.

　　The UMeox X5 comes less than a month after fellow company Huawei unveiled on June 18 its ultra-thin model, the Ascend P6, which the vendor claimed to be the world's slimmest smartphone at 6.18mm during a launch event. The Ascend P6 has a 4.7-inch 1280 by 720 in-cell display and is powered by a HiSilicon 1.5GHz quad-core K3V2E processor.

　　In China, the ultra-thin segment was previously dominated by branded players including Huawei, ZTE and Oppo; the entry of white-box vendors will eventually heat up the competition in the sector, said industry watchers.