Continuity mistake: When the girl gives Litwak her phone to show him there is a replacement part on eBay, her phones shows that it is connected to WiFi. Litwak doesn't set up his router until later that evening, he has only plugged it in. (00:09:41)
Suggested correction: It's possible she's either connected to wifi at another nearby business, using a public wifi signal, or using a friend's phone as a hotspot.
Continuity mistake: When Black Manta gets the gold coins from the Atlantians the bag falls in front of him but in the next shot the bag is behind his feet.
Continuity mistake: On the spaceship, Peter is talking to Tony, and has his hair swept back with gel or similar. When he says "You can't be a friendly neighbourhood Spider-Man if there's no neighbourhood", we cut to Tony then back, and Peter now has a fringe with no gel. In later shots it's back how it was before.
Continuity mistake: When Kate is hanging on to the sleigh as it takes off she is holding on with one hand. Camera changes and now she is holding on with both.
Continuity mistake: Meg starts the trip wearing a red flannel shirt over a blue cardigan over a gray T-shirt. Along the way she first drops the flannel shirt, then the cardigan (the color of which seemed to have gained saturation). She's not seen carrying them or any bag that might have held them. When she finally faces It, all the clothes are back on. Calvin's case is even more evident: he starts with a jacket over a red shirt, ends up with a just a now-gray T-shirt (matching Meg's) but is back with jacket and red shirt at the end.
Continuity mistake: When she is painting the wall and stops to go and hug him, in different shots during the hug the amount of white she has painted lessens, and has a different pattern. (00:07:45)
Continuity mistake: When the movie begins the smallest boy holds a neat pile of towels. When the shot changes they're messed up. Then they swap back to neat. (00:08:15)
Continuity mistake: When Lando is rushing over to L3's body, the white panels behind him in the Millennium Falcon pop off from the battle and turbulence. It quickly cuts to another shot where they are still attached to the wall. (01:27:15)
Continuity mistake: When Roberta comes over to give Mark the doll he left at the shop, we see an animated sequence just before this. The character in the animated sequence gets her top ripped open. In the real life version, the doll has more of its shirt ripped open.
Continuity mistake: After Dumbledore gives Newt the card for the safe house in Paris, they teleport to a bridge where they continue talking. Dumbledore then tells Newt why he likes him so much, and in the side shots, Newt is shown holding the card up. When it cuts to angles from behind Dumbledore's shoulders, his arm and hand are much lower with the card and his head turned in a different position. (00:20:35)
Continuity mistake: When Vera is shown David's file by the doctor, whilst he says "You extracted a meningioma from his brain", she scratches the side of her head with her left hand and some hair is showing sticking up after doing so. When the camera changes angles, the hair is no longer sticking up. (00:44:10)
Continuity mistake: When Nick Cage and the woman get to her place and start to make out, he takes her bra off, leaving her bare chested as he fondles her. It cuts to a different angle as they are kissing and suddenly her bra is back on again, only to be gone in the following shot.
Continuity mistake: In her temper tantrum, the Empress throws various dishes and cups to the ground. In her messy motion though, some items do not fly off the table and a golden fruit bowl happens to just spin around and stay on. It is gone next. (00:02:45)
Continuity mistake: Princess Dawn is in her chambers and her servants are preparing her for the coronation. When her book-headed valet tells her "You have come of age", he is suddenly holding the tome with both hands, while he had just one on it before the cut. (00:19:30)
Continuity mistake: After Willoughby wrapped a necktie around Don's wrist and crossed the ends to hold it together, it fell apart when Don lowered his arm. But the necktie was securely wrapped when the camera shifted to showing Don putting his arm around Willoughby's back. (01:36:40)
Continuity mistake: When Jason lunges at Batman with his knife, there is a pile of garbage by the wall where he lands. In the first shot the barrel by the garbage is wooden. But in the next shot it's suddenly a metal barrel/drum. It then changes back to a wooden barrel again. (00:04:20)
Continuity mistake: Fang placed the shoebox almost parallel to the front door, but it was at a different angle when Luke saw and was approaching it. (01:12:29 - 01:14:14)
Continuity mistake: When Captain opens the bridge gate he puts his right hand to his chest. From the opposite shot it's down.
Continuity mistake: The Stalker, "Shrike," is a persistent hunter, but not terribly quick on his feet. He's sort of a lurching, Frankenstein-like cyborg who is always pursuing Hester Shaw at about walking speed. When Valentine frees Shrike from Sharkmoor prison, miles out to sea, we see Valentine in his airship destroying the prison and we see Shrike's prison cell sink to the sea floor. This cuts to a long distance shot of the prison exploding and sinking in the far background, miles away, as Valentine's airship comes sweeping from the far background into the foreground and out of frame. Almost immediately, Shrike emerges from the surf in the foreground and slowly trudges ashore, implying that he somehow travelled miles across the sea floor just as swiftly as did the airship, in a matter of moments, despite his slow, lumbering gait. (00:47:40)