battery consumption will increase when you use certain features or apps , such as GPS,games, or the internet
make sure that power saving mode is enabled
check the battery drainage for each app by going to settings-device care - battery
as you can put unused apps to sleep by going to settings-device care-battery-tap 3 dots -tap on sleeping apps -add the apps you want
also you reschedule syncing by using bixby routine if your device support bixby routine
Optimize battery and use power saving modes
Battery is your phone's lifeline. There are several ways you can change the battery settings to optimize your phone's battery life.
From Settings, swipe to and tap Device care. Tap Battery, and then tap Power mode. Select from the following options:
Highperformance: Maximum screen brightness and resolution. Uses more battery.
Optimized: Get the recommended balance of performance and battery life.
Medium power saving: Extend battery life by limiting some functions.
Maximum power saving: Save as much battery as possible.if you still face the same issue then kindly visit the nearest service center the link of the service centers:https://www.samsung.com/sa_en/offer/service-centers/
I already did all you mentioned, but there is no significant change. I remove the device from the charger with 100% battery, and within one minute or less the battery drains to 99% while screen off, WIFI off, data off, location off and Bluetooth off. I think this is up normal at all.
