Devices that use 4x A57 include:
Samsung Galaxy Note 4,
Samsung Galaxy Tab S2,
Nexus 6P,
Xperia Z5,
Lumia 950 XL,
HTC 10,
running at >1.9 GHz.
4x A47 are most prominently featured in the Snapdragon 810 chipset introduced in April 7, 2014.
It is a high end CPU of yesteryear (running at >2 GHZ in the smartphones).
https://en.wikipedia.org/wiki/List_of_Qualcomm_Snapdragon_devices







