Every professor knows that students with laptops and smartphones often will not be paying attention in class. Most have taken a seat at the back of a large lecture hall and viewed the screens of law students.
Try this instead - pay attention in class. Really try to follow your professor's train of thought whether you read for class that day or not.
Remember: You are paying to sit in that class and learn from this person. Get your money's worth from the class by paying attention.
Past exams with model answers show you the way to rule statements and writing the way the professor wants to read your essays.
Does he want particular words and phrases?
Does she want policy arguments or not?
Are short, punchy sentences the way to an A?
Professors have office hours for a reason. Meet with the professor at least once during the semester. Ask for clarification of a law or the application of it.