What is mi band 4 pair first?

To pair your Mi Band 4 for the first time, you must first download the Mi Fit app on your smartphone. Once downloaded, open the app and create an account if you haven't already. Follow the instructions on the app to pair your Mi Band 4 with your smartphone via Bluetooth. Make sure your Mi Band 4 is fully charged before attempting to pair it with your smartphone. Once paired, you can personalize your Mi Band 4 by customizing your settings, such as activity tracking and notifications.