Dual Core processor makes a QUANTUM 4 as a powerful, comfortable and multi-purpose tool for both business and pleasure. With the camera app you can take panorama photos to the next level. GPS receiver change your QUANTUM 4 into a navigation device with a user-friendy GPS application which has a smooth, seamless map display, an advanced smart search. Dual Sim gives a possibility to use two SIM cards without the need to carry two phones. Turn on portable Wi-Fi hotspot to improve your mobile computing experience.