How can I shut down my Android device using an adb command?

Question

How do I halt an android phone using adb command? I can reboot, but I don't know how to halt.

I tried shutdown -k wait command, but it did not work.

Answer 1

Try adb shell reboot -p to shutdown the phone.

Answer 2

Note: All the following commands below require root access.

On Android Oreo, this works and does a graceful shutdown:

adb shell su -c 'am start -a com.android.internal.intent.action.REQUEST_SHUTDOWN'
adb shell su -c 'am start -n android/com.android.internal.app.ShutdownActivity'  #alternative; the aforesaid intent is supposed to be passed to this component under normal circumstances, but calling the component alone works too
adb shell su -c 'svc power shutdown'       # alternative; tested on Android 5.0, 6.0.1 and 8.1.0

Following is an alternative and is tested on Android 4.2, 5.0 and 6.0.1. I do not know about Nougat but it doesn't work for Oreo though.

adb shell su -c 'am start -a android.intent.action.ACTION_REQUEST_SHUTDOWN --ez KEY_CONFIRM true --activity-clear-task'   # I kept this here for historical purposes only.

For low-level and instant shutdown

If you're running Android KitKat or above^* and have root access, you can try this command:

adb shell su -c 'setprop sys.powerctl reboot,recovery'

• replace su -c with adb shell to run the command using adb
• replace reboot,recovery with reboot to reboot the device
• replace reboot,recovery with shutdown to shutdown the device

---

^* _{The last version on which the command is tested upon is stock Android 6.0.1.}

Answer 3

Here is another method - go to Android's shell, then shutdown the phone:

adb shell
shutdown

Using C:\Windows\system32\cmd.exe:

Microsoft Windows [Version 6.3.9600]
<c> 2013 Microsoft Corporation. All rights reserved.
C:\Users\Mahdi> adb shell
root@android:/ # shutdown
shutdown

Answer 4

In the Windows Subsystem for Android (WSA) shutdown doesn't work. Instead, try doing

adb shell reboot -p

or

adb shell
reboot -p

PS E:\platform-tools> .\adb.exe devices
List of devices attached
localhost:58526 device
PS E:\platform-tools> .\adb.exe shell
windows_x86_64:/ $ shutdown
/system/bin/sh: shutdown: inaccessible or not found 127
windows_x86_64:/ $ reboot -p
Done
windows_x86_64:/ $
PS E:\platform-tools> .\adb.exe devices
List of devices attached
localhost:58526 offline

Answer 5

To shutdown the phone use this command on PC:

adb shell halt

Answer 6

Try

adb shell "input keyevent 26"

It works for me.