
Issue:
The Facebook mobile app is known to consume significant system resources, including RAM and battery life. Background app refresh allows the app to continuously sync data and receive updates, even when it's not actively in use. This ongoing activity can reduce daily battery life and occupy substantial RAM—potentially slowing down your device's overall performance.
See also - Why Do Smartphones Get Slower Over Time?
Solution:
Consider accessing Facebook through your mobile browser instead of using the dedicated app. Using the mobile website eliminates the app's background processes, leading to noticeable improvements in battery life and phone responsiveness. Alternatively, you can disable background app refresh for Facebook in your device settings to conserve resources while still receiving notifications when you open the app.
On iPhone -> Settings > General > Background App Refresh.
On Android -> Settings > Connections > Data usage > Mobile data usage > Allow background data usage