This document discusses some of the social and health implications of smartphone use. It notes that people on average check their phones 150 times per day, which can hurt productivity and brain function. Studies also show that smartphone use during social gatherings can negatively impact conversations. Prolonged use is linked to increased risk of depression, stress, sleep problems and possibly brain cancer over time. The document advocates for establishing "device-free zones" to encourage real human interaction and engagement with the physical world rather than constant smartphone distraction.