hi, why in the description there are two types of CPUs (CPU Dual-core 2.15 GHz Kryo & dual-core 1.6 GHz Kryo Quad-core 2.3 GHz Cortex-A53 + Quad-core 1.6 GHz Cortex-A53)?and then,why now it says Snapdragon 835 if even a few days ago was written Snapdragon 835? Reply:it upgraded to 820 to 821 on Nov 2,2016.thanks...