Studies on smart phone usage should be taken with a grain of salt because it's hard to define the spectrum of use without self-reporting. One might use their ph

Studies on smart phone usage should be taken with a grain of salt because it's hard to define the spectrum of use without self-reporting. One might use their phone to watch lectures while another is watching clickbait but both can be on the same app. More like the apps themselves aspire to operate on the level of addictive drugs.