This is very well done! I'm not used to the escape room type games but it was a very enjoyable experience. You do a great job of setting the mood with the story elements revealed through notes and with the visuals.
Controls are great. All of them make sense and are straightforward to figure out. I really like the pop ups that tell you the controls to use in specific situations early on in the game.
I think some of the UI elements could use an upgrade in terms of visuals for the phone and computers because some of them look close to the default Unity UI.
Great job and good luck with development!