The S4.8, aka the Gionee GN9005, has already passed through TENAA where it was revealed the phone has body of just 5mm thick with glass both front and rear. The 4.8 in the name relates to the screen size which happens to be a 4.8-inch Super Amoled model.
A 1.2Ghz quad-core processor from Qualcomm, with LTE, 1GB RAM and 8 mega-pixel main camera and 2050mAh battery make up the remainder of the specs.