He did it because he thought that all of the people were wasting way too much time on social media website or cell phones. So he took a break from all of these things to prove to people that this could be done. He learned a lot about himself during these 90 days. He found out who his true friends were, and who just wanted to text him when they were bored. He even reconnected with his ex girlfriend because there was no longer any pressure or jealousy between them. After it all I think that it strengthen the way he communicated with others.