Xiaomi completed the global roll-out of the POCO M3 Pro in mid-2021. Now, a number of leaks suggest that a successor for this affordable 5G phone is incoming. The M4 Pro is said to have an SoC from the same OEM as its forebear, albeit with a new and upgraded charging rate.
https://www.notebookcheck.net/The-POCO-M4-Pro-is-incoming-with-a-MediaTek-processor-and-faster-charging.568735.0.html
A solid processor by mediatek at its heart and the long battery life is all you need.