Schedule Do Not Disturb Automatically
If Do Not Disturb only works when you remember to switch it on, notifications still slip through during meetings or overnight. MIUI can run silent or Do Not Disturb mode on its own recurring schedule, but the settings for start time, repetition and mode type are easy to miss.
Change Notification Shade Shortcut
On many Xiaomi phones the icon in the top right corner of the notification shade always opens Settings, even if you never use it there. If you pull down notifications dozens of times a day mainly to search for something, that shortcut is wasted space and slows you down.
Change Alarm Volume
If the alarm on your Xiaomi phone barely wakes you up or does not go off loud enough, the alarm volume is set too low system-wide. This one setting controls every alarm you create, and it stays the same even after the snooze function kicks in.