Zopo Color M4 is the most recent smart phone I have used.
It has got the Screen Size of 4.00-inch and have the Resolution of 480x800 pixels.
This Phone has Internal Storage of 16GB.
While using this phone I felt lag ploblem because it has only quad-core processor with RAM of 1GB.
OS Android 6.0 is good but because of low processor, I dont find this android version suitable for this device.
Battery Capacity is only 1450mAh which is very low powered. We cant use it even for a single day.
I won’t suggest you to buy this phone.