They are (I own a Nokia), but you can go into Battery Optimization in the settings and tell it to not optimize an application. That, I find, tends to leave it a

They are (I own a Nokia), but you can go into Battery Optimization in the settings and tell it to not optimize an application. That, I find, tends to leave it alone much better. It is the only way I can get my K-9 mail app to stay alive to sync my email.