PoBoy
Innovator
It seems that after new OTA on Mi4i CPU cores 2 and 3 (out of 0 to 7 cores) are disabled permanently (Sleep mode) in Performance mode to lower down the temperatures while other 6 core are running on highest frequency.
So our device is only Dual core (included power cores only) now? Tested after opening heavy apps and games.
As this also affected the performance of AnTuTu from 39400 (6.5.3.0) to 32600 (6.5.5.0) in performance mode.
...
Hell with them.
In GSMArena's tests, the Xiaomi Mi 4i had a maximum 3G talk time of 21 hours. On a full charge, you can achieve about 8 and half hours of web browsing, or a little over 10 hours of video playback.