The small 6.28-inch Xiaomi 12 is part of the new flagship series from Xiaomi and offers correspondingly powerful equipment. With the high-end Snapdragon 8 Gen 1 SoC, it is just as fast as the Xiaomi 12 Pro. Except for the different form factor and camera setup, it shares a lot of equipment characteristics with the top model.
https://www.notebookcheck.net/Xiaomi-12-A-small-smartphone-with-high-end-equipment.610926.0.html