Character mistake: In the episode "iHate Sam's Boyfriend", when Spencer is making his claymation movie, he says if his set is messed up, he has to start the whole movie over again. However, Spencer still has all the frames he previously shot, so he just has to shoot that last frame again. But Spencer still shoots the whole thing over again. Also, when he is shooting it again, he doesn't move the figures at all.

Continuity: In the episode where Carly's cousins come over, Sam goes upstairs to read a book. When her cousins are gone and Carly goes upstairs, she sees a boy rubbing Sam's feet. In between shots, Sam's right foot goes from facing inwards to being flat.

Continuity: In one episode (I think it is "iPromote Tech Foots"), Sam hires a personal chef, Sonia. In about the middle of the episode, Sonia is making blueberry muffins while Carly, Sam and Freddie are sitting at the table and Spencer is talking to them. Sonia takes the muffins out of the oven and puts her oven mitts down. Next, Spencer starts walking away. Then Sonia is putting down her oven mitts again. There is no way she could pick up and put down her oven mitts that fast.

Continuity: In the episode where Carly turns in her history report, when she's with the paper at home, it has no holes punched in it. When she got back, however, it was 3-hole punched.

Factual error: In the episode where Carly is trying to break the world record, they show a kid tickling himself, which is indeed technically impossible.