The bootup app function allows us to set a specific app to open automatically after turning on the device. You can find this option by following the steps below.

Droid Settings→More settings→Device Preferences→Bootup app Setting.

Open the bootup app setting will display a list of all apps in the system. We only need to enable the app that we want to set for auto start.

It works with auto-start apps. If we accidentally close it when we need a specific app to stay open, the app that maintains its state will wake it up and keep it open. You can find this option by following the steps below.

Droid Settings→More settings→Device Preferences→Keep alive app Setting.

Open the keep alive app setting will display a list of all apps in the system. We only need to enable the app that we want to set for keep alive.If the application is in the background or not started, it will be automatically launched to the desktop within one minute.