Other mistake: Season 2, episode 20 "iFight Shelby Marx": At the beginning, when everyone is watching Shelby fighting on TV, the timer is going too slow. According to the timer, the fight ends at 2:53, which is only 7 seconds of fighting, yet the fight was way longer than that.
Continuity mistake: In "iPromote Tech Foots", Sam hires a personal chef, Sonia. When Carly, Sam and Freddie are sitting at the table and Spencer is talking to them, Sonia takes the blueberry 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.
Plot hole: Near the end, Sam locks Mr. Howard and Ms. Briggs in a closet. Sam and Gibby then put a heavy desk right against the door and leave them stuck inside. Then later the two teachers are seen frantically controlling the students. How did they escape? They were inside a closet with the door locked on the outside and with a heavy desk against it.
Add timeKaiser Strien
Other mistake: Season 1, episode 5 "iWanna Stay with Spencer": The "Fan of Hammers" has all the hammers pointed the same way. But when the hammer goes into the wall, it goes in backwards. It is also there through all the rest of the shows and even in season two, where in "iKiss" it has a black handle.
Continuity mistake: Season 1, episode 18 "iPromote Techfoots": When they have the first meeting with the techfoot people, Sam is eating a sandwich. Every time the shot goes back to her and Carly, the amount of the sandwich she has eaten changes. Sometimes there is a bite taken, and then the next time there isn't a bite taken out of it.
Continuity mistake: Carly, Sam, Fleck and Dave are sitting at one table at the Groovy Smoothy sipping a new smoothy flavor with T-Bo standing next to them. Suddenly the smoothy gets too spicy so all four go to another table and gulp down other people's waters then sit back down. T-Bo comments and leaves his original spot. When Carly and the other three drink their smoothies and it gets too spicy again, water glasses suddenly appear from nowhere. T-Bo never would have had time to put them there.
Continuity mistake: Season 2, episode 20 "iFight Shelby Marx": In the beginning, Carly gets a bowl and fills it with popcorn up to about 2/3 full. The camera cuts to Sam, then back to Carly, and the bowl is barely full. The camera goes back to Sam then to Carly again, and the bowl is 2/3 full again. Freddie walks in, and the bowl is barely full again, which Carly now fills with popcorn.
Other mistake: When Carly and Freddie are frantically trying to find a birthday present for Principal Franklin, they are talking in the kitchen and you can see a microwave above the sink. Carly then runs to the counter and grabs a microwave to give to him. Why would they have two?
Visible crew/equipment: In the iCarly TV movie "iGo to Japan," the gang is riding in Kioko and Yuki's car when the Japanese comedians start arguing. In the shot showing Freddie putting his camera away, you can see several reflections on the side of the car. They are hard to make out what they are, but these are obviously the reflections of the crew in the background. If you look out the window beside Carly and Sam in the same shot, you can see how fast they are going past Tokyo. If these reflections are reflections of things in the city, they would quickly move away as they speed past. However, they stay put.