What is the difference between a sandstone cover and a back cover?
In my personal experience to tell you, because I also use a plus phone. Sandstone black rear shell is a rough sense of touch, and the back of the black rock is the same as the white baby, it has a matte visual and baby white feel
With Baby Skin handle, matte visual sense, taking into account the characteristics of a plus phone two different rear cover. Obsidian black continuation of sandstone black and Baby Skin white, while the extent of wear has a large part of the upgrade, the abrasion index of sandstone Black 3 times, Baby Skin white of the times, against the outside world to destroy my most beautiful black.
Compared with the sandstone back shell, the black shell has been improved.