M30s being the first in 6000mah battery segment followed by other m series phones with same configuration why are you not providing same features to m30s as like m21. M21 got one Ui 2 .1 where as m30s is still at one ui2.0 and many features(10 times zoom, single take, qr scanner, document scanner,..etc) are missing from m21 to m30s. Hoping you provide one ui 2.1 or later version as update in coming updates.
giving some features are just waste like 10 × zoom because here they would provide ( if they give ) digital zoom which isn't useful you can also crop the image to get it but yes single take , qr scanner etc are helpful in certain situations
