When Daniel receives the text message saying Miguel is out of his coma, the back of his phone case has no aperture for the camera. In a later shot, when he receives a call after the garage fight, the case has a camera aperture.
In the hospital Miguel is wearing a halo, which is used for neck fractures and screwed into the patient's skull. He wakes up with no broken neck or holes in his head.
When Danny and Johnny go to the prison to talk to Robbie's friends, the fence behind Johnny ends and doesn't reach the wall.