Mobile notifications are alerts that appear on a smartphone or tablet to inform users about various events or updates. These notifications can come from apps, messages, or system alerts, providing information such as new messages, reminders, or news updates. They help users stay connected and informed without needing to open each app individually. Users can customize their mobile notifications by adjusting settings for each app, allowing them to choose which alerts they want to receive. This feature enhances user experience by reducing distractions while ensuring important information, like calendar events or social media updates, is not missed.