Facebook’s background activity (prefetching news feed, checking notifications) can impact battery life and performance on older devices. Consider limiting background refresh: Settings → General → Background App Refresh → Facebook → Off .
If “App Updates” is on in Settings → App Store, iOS will update Facebook in the background overnight when charging and on Wi-Fi. ios facebook download
Yes. No upfront cost. In-app purchases are optional. Facebook’s background activity (prefetching news feed