a few years ago, there was some male Karen who was going through pilots Instagram feeds, looking for pictures that were taken in flight and reporting them to the FAA. And of course, these pilots were investigated.
Point is, do not be stupid up there. It's one thing to read "company material" or even use your disconnected phone to catch up on company material. But if anything gets dorked up, you can bet the FAA and your company will ask for your phone immediately to make sure you weren't on the WiFi.
(edit) found the article.
https://qz.com/233165/the-pilots-of-...es-of-the-air/