How do you turn off any Android phone from anywhere just via SMS-Remote Turn Off-[1bestapps]

This app will read receiving sms and executes power off command if any of the messages starts with previously set keyword received.

Usage:
1. Open the app (Remote Power Off)
2. Enter "null" as the current code. (case sensitive)
3. Enter anything as you wish as your keyword to turn off your device. (case sensitive)
4. Send a sms starting with your keyword to your device from any number. (CASE SENSITIVE)
5. You will be asked to grant SuperUser access to the app. Give permanent superuser permissions (only for the first time)

After doing these steps, you can now go to any phone and send a text message containing the word or symbol that you have chosen (in my case the keyword is "poweroff") to your phone