I kall n4 is a 4g tablet which is available at cheap rate in online stores , coming to review of this tablet , it offers 1.0 ghz quad-core processor but some sort of hanging occurs , nd poor performance of rear and back camera makes you dissatisfied and good performance of battery of 3000mah , and comes to the mobile performance , installation of 3d games and apps hanging your tablet and some times irritates .the micro usb otg port not works properly and poor performance at sound quality.so it is secondary option to you guys to bought this tablet , who cant bear high cost.it gives some sort of temporary option for use