Why did he turn on the phone later?

Directions: Read the passage carefully and answer the question that follows.

The day of the maths test was next Monday. Jim had three days to study. He did not like maths. It was his hardest subject. He had to study in order to pass. He locked himself in his room. He turned off his phone and computer to avoid distractions. But, he could not solve a maths problem. He needed help. He had to turn on the phone and ask his friend for help. His friend agreed and came over. His friend helped him study for three hours. He took the test. And lo! he passed the test. Studying had paid off.