Battery drains fast even when phone not in use

[Ador Palad]

Hi. My iPhone 7 Plus drains its battery too fast. I leave it on 100% charge at night and when I wake up in the morning, charge is down to around 20%. I changed the battery yesterday but problem persists. Is there anything wrong with the phone or the settings? Please help.

 

[scifan57]

Take a look at Settings>Battery and check to see if any apps are using too much battery power.

 

[Ador Palad]

Take a look at Settings>Battery and check to see if any apps are using too much battery power.

Yes, it says Facebook but I don't use the app that often.

 

[scifan57]

Facebook is notorious for running in the background excessively, causing battery drain. Make sure that settings doesn’t allow Facebook to run in the background and force close the app. Check back the next morning to see if that made a difference.