Menu and settings iphone?

Valued team, Developers, user,

my person used to android, was challenged to change setting (espacially language) on an iphone but unable “blind”? to find similar settings, menus on iphone. Maybe somebody feels inspired not to only help out iphone user in regard of language settings but to work out something like in the sample Comprehensive manual for Sārahārī-Saṅghaṁ (Delta Chat) []

Originally thought interface would have similar structure.

Sometimes some app settings on iOS are in the system Settings app. That is also the case for the language setting in DeltaChat.

Appreciation for care, good master Simon.(Thought so, but not knowing more about phone setting on such devices)

Anyhow, maybe good to introduce the use on iphones a little, as seemingly different and not so easy to see through the net.