Smart phones can affect health and behavior in several ways. While some research has found cell phone radiation may impact brain activity or potentially cause brain tumors, other studies have found no conclusive evidence that cell phones pose health risks. It is recommended to take precautions like using headphones or speakerphone to limit direct exposure. Smart phones also enable constant connectivity that can improve productivity but also influence social interactions and activities through increased access to information, communication, and entertainment applications. The growing smart phone market reflects their widespread adoption and integration into many aspects of modern life.