Facebook together with messenger eats up well over a gig (about 1.5 gig usually) of my storage. Both big down ur phone or device to the point fb can hang at times. It has done this for years. Lit is so much better but constantly has dark mode issues where it will not stay in day mode or display properly in dark mode. This will cause people to rush away from Facebook if ever there is a good (even mediocre) alternative! U r a huge company. U are well aware this happens. Fix it! Disrespectful