This course will teach you how to use a smartphone, from setting up your device to navigating the menus and features. You will learn how to use the various apps, make calls, send messages, and access the internet. You will also learn how to customize your device and troubleshoot common
From Wikipedia
Problematic smartphone use is psychological or behavioral dependence on cell phones. It is closely related to other forms of digital media overuse such as social media addiction or internet addiction disorder.