Kowloon Highschool Chronicles does it really well.

Buying items is done through encrypted online store, mini quests are received from the official site of the treasure hunting association you're part off and so on. The game expands this immersive ui further by making your stat screen be a report card and with skill names being curricular subjects.

You don't really interact with it much but Ace Combat 3 UI is Data Swallow, the in universe internet browser of choice. Each faction comes with unique boot up sound that I might or might not use as my ring tune.