At 2 minutes 25 seconds into the movie the black jeep is shown parked behind a white vehicle. But when the camera pans around the jeep the white car in front is gone and there is a blue car on the front right side. When the camera pans back around to the front of the jeep as the characters are walking away the white car in front is back and vehicles on the right side have changed.
When Amelia calls Vada from the school bathroom, she has an iPhone. In the next scene when everyone is around the dinner table and Vada asks to see the list of kids who died in the shooting, Millie hands over an Android phone.
When Vada is asked if she is going back to school after therapy, the rear passenger door is seen being opened in the side mirror. Amelia then asks Vada if she is going with her and their mother to get some food with a clear view of the same rear passenger door not having been opened yet.
When Vada and Mia text for the first time, Vada begins typing "Hey" on her phone, and then the camera cuts to her face while a text bubble comes up on screen. In the bubble, Vada's text now starts with "Hi."
The way Nick swings around his coffee cup while he and Vada sing on their way to school clearly reveals that it has nothing in it.
When Vada is on drugs in class, her teacher says that the students need to study because she will not be able to help them during the pop quiz on Friday. The whole point of a pop quiz is that students do not it is going to happen. No teacher would make this mistake.