Officer Garrett pretends to talk to someone on his smart-phone. When the phone is slightly held away from his ear, the screen shows the start menu - not the display of a caller. This shows that he is actually not speaking with anyone.
During Ian's funeral, which all four girls are attending, there is a cut to a scene taking place at school, in which Hannah confronts Caleb's foster mother Janet. The following scene once again shows the funeral.
Hanna offers Caleb some ice, then says they have none. She looked in the fridge, not the freezer, before saying this.