The Center for Humane Technology has been trying to measure which phone Apps make people happy or unhappy. These ratings are based on an App called Moment, which is supposed to help people manage their phone use by tracking how much time they spend on various apps. Above, the happiest apps (among those with enough use in their sample to generate valid statistics).
They also found big effects based on how much time people spend on each app. For example, happy people who play Candy Crush average 12 minutes a day, while unhappy people average 47 minutes. Happy people use Facebook 22 minutes a day, unhappy people 59 minutes.
So, basically, happy people spend less time on social media or playing games and more listening to music, podcasts, or recorded books. Also, spend less time with your phones and do something else.
I had to laugh when I saw that Google Calendar is one of the happiest apps, because this confirms the old intuition that mentally ill people have trouble staying organized.