What to do if the band displays can not be customized in the Mi Fitness APP when the Xiaomi Smart Band 8 connects to an iOS phone?

The reason for this problem is that the display zoom function of the phone is set to "Larger Text", and some iOS phone models are not compatible. We will fix this problem in the later APP version.
To set the display zoom function, please refer to the following steps:
Go to [Settings] >> [Display & Brightness] >> select [Display Zoom] >> select [Default] >> reopen the Mi Fitness APP and you can find the Custome function.