xiaomi phone is capable to block mobile data (and wifi) on app level. Say, gmail can access data on wifi only, chrome on mobile only and whatsapp on both mobile

xiaomi phone is capable to block mobile data (and wifi) on app level. Say, gmail can access data on wifi only, chrome on mobile only and whatsapp on both mobile and wifi. It's a finer control than disabling background data. Before xiaomi, I used asus and it eats mobile data like crazy with no control other than airplane mode. bonus is that xiami has finer permission control too on app level. I can disallow whatsapp to access my contact and camera, for example. whatsapp can still function; however, it shows phone numbers instead of names in chats. so even though xiaomi is cheaper, it's more powerful to use. definitely great user experience, easily beats any, more expensive android devices i ever use: motorolla, asus, samsung, etc