On iqoo neo 7 pro, screen colors are not that great you have given 3 modes, but on that three modes nothing is perfect for an user experience as compared to other phones like Samsung, motorola, iphones. 

The first problem is on viewing human subjects we can identify more reddish colors on faces(standard (default color tone)) but in other phones the same picture will be in another tone without exaggerated reddish colors...so it is not possible to edit photos in this phone, when a that photo checked on other phone there might be color tone variation. 

So it is essential to re check the color calibration of iqoo neo 7 pro devices.

With all respects..!!