The official reply said that as the temperature rises, the heat dissipation efficiency of the mobile phone decreases while the sensory temperature rises, and the charging itself will produce heat, leading to the problem of slow charging speed in some scenes.
The charging strategy has been optimized, passed the first round of internal testing, and is expected to be fixed in the mid-July release. In addition, the problem of Mi 11 automatic brightness adjustment too fast has also been fixed in version 21.7.2, please update the latest version to verify the repair.
You can try to switch the machine again to try it, if it is still slow, you can go to the after-sales test.