Get the package name + Activity name of the APP currently running on the phone & use the ADB command to start the phone (Android) APP

• Connect the mobile phone to the computer, turn on USB debugging,

• Windows downloads ADB, sets environment variables, and then opens cmd

• Obtain the package name + activity name of the APP currently running on the phone
  adb command

  adb shell dumpsys window | findstr mCurrentFocus
  

• Results of the

   mCurrentFocus=Window{
        
        d9a816a u0 com.xxx.xxx/com.xxx.xxx.ui.activity.TabActivity}
  

  Where com.xxx.xxx is the package name,

• ADB start APP command:

  adb shell am start com.xxx.xxx/com.xxx.xxx.ui.activity.TabActivity