As the tiltle says the phone is the very highly anticipated successor of the OPO.
but it has no real world performance difference between the 2 devices as OP2 gets 55300 in antutu benchmarks and OPO gets 50200. so ther is only 10% gap between the gap.
moreover the OS oxygen is new and has no smart features like the cyanogen mod OPO.
so think again before you want to upgrade your OPO. the phone is very good to new users but if you are using OPO you will get dissapointed with features and price paid.
I returned the device and chose to keep my OPO with me.