Continuity mistake: In "iGo to Japan", when the iCarly crew, Spencer and Freddie's mom have to jump out of the airplane, Freddie's mom jumps out of the airplane with out buckling the parachute backpack in a rush to follow Freddie. But when everyone has landed, she is struggling to unbuckle and take off the backpack.
Revealing mistake: It's very obvious that Carly's grand-dad is a stunt double when he does a handstand in the record attempt episode.
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.
Visible crew/equipment: "iPromote Tech Foots": Carly buys a motorcycle for Spencer, and when Spencer puts his helmet on, you can see a boom mic.
Continuity mistake: In "iGetPranky", when Carly and Spencer begin talking, Carly turns off the TV before they start talking. Then she turns off the TV once again.
Factual error: "IParty with Victorious" is shown after the episode "iOMG". The thing is, anything that happened in "iOMG" never happened in the episode "IParty with Victorious". "IParty with Victorious" should have been shown first, not "iOMG".
Other mistake: In the theme song opening of iCarly, The Slap is saved under their favorites on their computer. The Slap is Hollywood Arts' website. Why would people living in Seattle go on a school website for a school in Hollywood?
Continuity mistake: Whenever they are doing the show, Freddy is almost always holding the large camera with blue light. When it shows him holding it, it's shaking. When it shows Carly and Sam from the angle of Freddy's cam, it is perfectly still. Always.
Continuity mistake: In some episodes, Lewbert's wart is small or not even there.
Continuity mistake: When Freddie holds his camera to film the web-show, he holds it at chest height pointing the camera upward to film the faces of Carly and Sam, but when you see footage from Freddie's camera it is completely straight.
Continuity mistake: In episode 3 of Season 1 we see Sam smashing the locker next to Carly's as she thinks it is hers. Gibby comes up to her and says that it's his locker and hers is the one on the right - which she promptly unlocks. However, in the next episode (ILike Jake) the start of the episode features a gag where Sam has traded lockers with Arthur Gradstein, to be next to Carly's locker as her locker is in between two sweaty aggressive football players, however in the previous episode she was seen unlocking the same locker that she apparently just traded with Arthur, after smashing Gibby's locker that is in the middle to pieces.
Continuity mistake: During Sam and Freddie's first interaction, Sam can be seen holding a coffee cup when she enters the room. For the first half of the conversation the cup is plain white, but as the camera returns to Sam, and she says, "You mean I can't play with the white balance on your super-dee duper-ee camcorder?" A green logo on the cup is plainly visible.
Revealing mistake: When the gang is "Messing with Lewbert" and they zoom in on his wart, you can easily see it is just makeup.
Continuity mistake: When Sam bangs on the locker with the hammer, the amount of damage on the metal repeatedly changes; it decreases, increases, decreases, and so on.
Revealing mistake: When Carly's in her dream and attempts to use the elevator, if you look really closely, she doesn't actually hit the button that lights up.
ILike Jake - S1-E4
Continuity mistake: When Sam walks in on Spencer wearing the plaster head, just after he points out the breathing and feeding tubes, there is plaster smeared all over the left tube that vanishes, reappears, then vanishes again in following shots.
ILike Jake - S1-E4
Continuity mistake: The locker that Sam has is introduced here, but in episode 3, she already has that locker.
Suggested correction: That's because the episodes were aired out of order, which isn't a mistake of the show. Episode 4, "ILike Jake", was the 2nd episode produced and episode 3, "IDream of Dance", was the 13th episode produced.
IWanna Stay with Spencer - S1-E5
Other mistake: 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. (00:02:35)
IWanna Stay with Spencer - S1-E5
Revealing mistake: When Spencer turns on his iPod when talking to his Grandpa, you can see that the headphones are not plugged into the iPod.
Suggested correction: It is plugged in, but the cord runs from Spencer's head under his shirt and meets the iPod near where Spencer's green short sleeve shirt meets his long sleeve white sleeve shirt. Only a very short bit of the cord appears from under Spencer's sleeve to the iPod strapped to his arm.
Continuity mistake: Nevel gets some tapenade on his face, but the amount isn't consistent. When he looks at Spencer you can see there is more on his face.
