Best Xiaomi Mi Band 4 watch faces app. Get the most amazing watchfaces on your mi band and xiaomi band now. Best collection of watch faces for MI Band 4 : • Mark watch faces as Favourite. • Install downloaded watch faces when offline. • Sort watch faces by number of downloads, date of addition. You can also search and filter watch faces for mi band 4. Watch Faces for Mi Band 4 app is the final destination for latest and custom watch faces for Xiaomi Mi Band 4. From today, thanks to the applic