First of all about the specs.
The phone comes with:-
Dimensions-142.7 x 71.7 x 7.6 mm(5.62 x 2.82 x 0.30 in)
Weight-141 g(4.97 oz)
Dual SIM(Nano-SIM/ Micro-SIM)
DISPLAY Type-IPS LCD capacitive touchscreen, 16M colors
Size 5.0 inches(~67.4% screen-to-body ratio)
Resolution 540 x 960 pixels(~220 ppi pixel density)
OS Android OS, v5.1(Lollipop)
Qualcomm MSM8916 Snapdragon 410 - 4G model
CPU Quad-core 1.3 GHz Cortex-A7 - 3G model
Quad-core 1.2 GHz Cortex-A53 - 4G model
GPU Mali-400MP2
MEMORY Card slot microSD(dedicated slot), up to 256 GB(LTE model),
32 GB(3G model)
Internal 16 GB, 1 GB RAM
CAMERA Primary 8 MP, f/2.0, autofocus, LED flash
Video 1080p@30fps
Secondary 5 MP, f/2.4s
Sensors Accele_45rometer, proximity, compass
BATTERY Non-removable Li-Po 2420 mAh battery
So according to me the design of the phone is good, very slim, but if we about the performance it is totally worst, I dont know what does oppo think mean in the year 2016, where all the company gives a RAM of 2, 3, 4 GB there oppo gives only 1 GB, and not that all the display resolution is only 480p means what, what does oppo think I know these is a budget segment phone but in the same budget other companies are giving much much better specification, means I dont know what does oppo things that whole phone specs are worst, but we can only click photo, just for example if someone ask;
User:-Can we play games on it?
Oppo:-No you can only click selfies on it.
User:-Can we see full HD videos?
Oppo:-No you can only click selfies on it.
So I strickly recommend, if anyone planning to buy these phone, please do not buy these and waste your money, I m telling these just because I had used it for last 6 months.
THANK YOU