Another point of reference on battery use: I use the Facebook app for maybe 5 minutes total a week on my iPhone. Under the Battery settings for the past 24 hou

Another point of reference on battery use: I use the Facebook app for maybe 5 minutes total a week on my iPhone. Under the Battery settings for the past 24 hours, it shows it's used 5% of my battery for "background tasks". I don't recall opening the Facebook app in the past 24 hours.