Seriously am I the only person who has read hogwarts a history? Muggle electronics go haywire around hogwarts. It's part of the security surrounding the castle. These head canons with computers and wifi are just stupid.
Part Harry Potter as the Defense Against the Dark Arts teacher<<<< did you guys not pay attention? The defence against the dark arts teacher profeesion is cursed! Honestly, i mean, all the teachers only lasted one term.