This difference arises because the Xiaomi Smart Band 5, 6, and 7 activate the phone's [Do Not Disturb] mode when using a mobile phone mute application, which silences both the ringtone and vibration (except for allowed interruptions). The Xiaomi Smart Band 8 decouples these functions (mute and Do Not Disturb). When silencing the phone on the Xiaomi Smart Band 8, it only adjusts the phone to mute while retaining the original vibration settings and does not activate the [Do Not Disturb] mode.
If you wish to quickly activate [Do Not Disturb] mode on your phone (no vibration, no ringtone, and no message notifications) using the band, you can directly enable the [Do Not Disturb] switch and synchronize it with your phone in the band settings.