Just checked my phone:

- audible, work: I can access all previously downloaded books

- bitwarde and andotp: work

- sms, telegram and signal, work: I can access the full history

- countdown, alarm clock, click counter, work

- dynalist, work

- pi music player and vlc, work

- maps.me, organic map and osmand: work, as the maps are downloaded in advance

- firefox & chrome, work: I can access all the app menus and open html files

- podverse, spotify and netflix, work: everything I pre-downloaded is accessible

- twitter app, work. I can see all tweets previously seen and posted today

- pcloud and dropbox, work

- rbnb, work: my history is accessible

- K9 and yandex mail, work: I can access to all my imap inboxes

- oura ring, work: I can access my stats and history

- calendar, calculator, qt scanner, work

- gallery, explorer, home menu, settings: work

What doesn't on my phone:

- gmail, waze

- banks and cryptocoins appp

- stremio, youtube, and discord