Samsung’s custom user interface for Android, One UI, has an aggressive battery management system. This is the reason why you experience apps being shut down in the background when you switch away from them. If you find this annoying, you have probably wondered how to stop your Samsung phone from killing apps in the background.
Samsung Mobile is one of the worst smartphone brands in terms of killing background apps and has gotten worse in recent times. It is actually rated as the most aggressive. This defeats the whole purpose of multitasking, if you ask me. Thankfully, there are steps you can take to stop Samsung from shutting down apps in the background.
Steps to take to stop your Samsung phone from killing apps in the background
To keep your apps running in the background on your Samsung smartphone, do the following:
Go to: Settings -> Apps -> Your App -> Battery -> Battery optimization -> All apps -> Your app -> Don’t optimize.
You have to repeat this for as many apps as you want excluded from being closed in the background. I recommend that you repeat this for only the most important apps that you use.