USA has the first three episodes available for free on its website. http://www.usanetwork.com/mrrobot/episodes On Medium, a user named Pneumatico Research broke down the scene exhaustively and concluded that the filmmakers had used a real spyware tool called Flexispy. The writer followed the tutorials on Flexispy's website and found that, indeed, the character had more or less genuinely hacked a real phone. Each week this show has gotten better and better...
Last week, Higinio O. Ochoa III was charged by the FBI with hacking into US law enforcement agencies and releasing phone numbers and home addresses of police officers. You're looking at the evidence the FBI used to nail him.