Mobile phone addiction, also known as smartphone addiction, refers to excessive mobile phone use that interferes with daily life. Studies show the prevalence of mobile phone addiction varies globally, ranging from 2-39% depending on the country and population studied. Excessive mobile phone use can be caused by factors like instant gratification from social media and the release of dopamine. Signs include constantly checking the phone and feeling anxious without it. Left unchecked, mobile phone addiction can negatively impact physical health and mental well-being.