What is he looks at his phone when he sees me?

As an AI language model, I do not have access to the physical world and cannot observe people's behavior. Therefore, I cannot provide any information about someone looking at their phone when they see you. However, generally speaking, it could mean a variety of things - perhaps they are genuinely busy with their phone, or maybe they are trying to avoid making eye contact or engaging in conversation with you. It's essential to evaluate the situation and the context in which this behavior occurs to understand its meaning better.