May be worth noting that ProRes is entirely unrelated to “Pro” phones (and predates them by over a decade if I read correctly.)

if they can only get eg DSL at their location, how would they fix that?

No it's the internet connection, 1gb takes two hour to download in perfect condition. Not complaining tho. There are many part of the world where you rely on your phone for internet and to download stuff and then use the computer for excel or to watch movies you downloaded.