According to Statista (2021), about 50% of the world's web traffic is generated by people using mobile devices, such as an Apple iPhone or an Android phone. This percentage has been consistent since early 2017.
Watching movies and videos (via mobile apps Netflix, Tencent, or Amazon Prime from the Apple app store), surfing social media sites, and emailing were found to be the most popular things for mobile users to do on their devices.