In the movie, Simon's first moment in the submarine (SM-13) involve him looking over the control console, and then going through some folios available to him. The very first one he picks, one with quite a few pages, is an instruction manual for operating the sub.

He looks at the cover for a whole two seconds before giving up. He doesn't even bother.

(yes the gif has a weird loop don't worry about it)

The only instruction he does bother with, is the next folio with One Page on it, and all it depicts is the panel at the back of the sub, and a single arrow going "CAMERA". He verifies it works and gets to piloting the sub. The controls are pretty simple, he just rawdogs it.

Later on when the sub's engine has gone offline due to some, err, rough ridin', he finds a crawl space under the floor of the sub and goes down to find some way to revive the engine. When he finds only the black box mechanism (at first), he gives us a lovely piece of his mind.

Not that we needed more proof that him and technical shit don't go together, but there you are. He went down there without even knowing if there would be anything to help or fix the issue. Dumbass extraordinaire <3

Now you may think, oh so he doesn't do hardware but he can do software! Wrooong, he cannot. Later in the movie the computer console is activated and is attempting to download files but the clearances have been rescinded, Simon can't access anything. This is what he tries.

He tries "HELLO" first, yes, and when the other three attempts that aren't even basic console commands fail, he tries asking nicely.