Oppo announced a new R series smartphone in Beijing called Oppo R3. The company is touting the smartphone as slimmest 4G smartphone in the world with thickness of 6.3mm and 140grams weight. The Gionee Claims its Elife S5.5 is world’s slimmest smartphone with the thickness of 5.5mm, but it do not have 4G LTE connectivity. The 5-inch display smartphone comes with O-video feature, combines photos and videos and upload them online instantly.













