Amazfit Watch faces

How can I see my installed watchfaces?

For android or iphone ?

You mean installed on your band or available in Mi Fit?
As far as I know an app can never see which face you have installed on the band itself because you can manually delete a face on the band and this is not something that gets synced with Mi Fit.
When I use the AmazFaces app and replace an existing downloaded face it keeps the original preview in Mi Fit.
I really hope they can change this so you actually see which faces you've downloaded. The Mi Band 5 Watchfaces app can do that as well so I don't see why AmazFaces makes things so complicated.