The single biggest misconception about iOS is that it’s good digital hygiene to force quit apps that you aren’t using.
I’ve been trying to stamp this out amongst my friends and family for as long as I can remember. The system is smart; let it do what it was designed to do.
For what it’s worth, nearly everyone I’ve corrected on this has at some point been a convert from Android.
External link: Public Service Announcement: You Should Not Force Quit Apps on iOS