Continuity mistake: The small wound below Jack's left eye increases and decreases size through the film.
Visible crew/equipment: Towards the end of the film, when Sam runs back for her hug, a red haired woman in a purple coat appears briefly on the right.
Other mistake: When the soldier says "Sir, she is trying to access the system" we can see the name she is typing in as she is typing it. This isn't possible unless they have a remote desktop connection, which they don't because they don't know where they are at. They are also using MacOS with a Windows background which isn't impossible but it is kind of weird. (00:29:15)MrGoatsy
Character mistake: Jack breaks out of prison and uses Military Police Car L67. When the General discovers this he radios to all units and says S67.
Continuity mistake: When Jack tosses Samantha's phone out the car window (when leaving the prep school), it breaks into three pieces, two on the walkway and one onto the grass. When The Hunter walks up to the phone, all the pieces are near each other on the walkway, and they are on the other side of the walkway than the two pieces originally landed. (00:47:35 - 00:49:15)
Continuity mistake: In the beginning in his first fight Jack gets a wound on his right cheekbone which disappears in the next days.