The Mi 10 suddenly changed from fast charge to slow charge possible reasons are as follows.
1. The slow charging of the mobile phone may be the damage of the data cable or charging head, and it is recommended to replace the fast charger.
2. It may be that there is a problem with the mobile phone system leading to the fast charging protocol not being started. It is recommended to update the system or go to Xiaomi Home to continue after-sales maintenance.
Oh, no, I think there's something wrong with your charger?