Using a phone for a long time would affect the brain. When using a cell phone, people would constantly think and process information, which would consume a lot of energy and brain resources. In addition, when people used their phones, they often paid too much attention to the screen, causing eye fatigue, headaches, shoulder and neck pain, and other problems. Using the phone for a long time could also cause problems such as lack of concentration, memory loss, and emotional instability. Therefore, it is recommended that people maintain an appropriate distance and posture when using the phone, avoid excessive attention to the screen, rest their eyes and neck, and pay attention to maintaining a healthy lifestyle.