title: Why can't I use adb to make a phonecall on real phone?
body: <p>I have tried to use the following to initiate a phone call:</p>
  
  <p><code>adb shell am start -a android.intent.action.CALL -d tel:12345</code></p>
  
  <p>It can work on a virtual device. But on a real phone, there are no responses.
  By the way, the following can work on the real one:</p>
  
  <p><code>adb shell am start -a android.intent.action.DIAL -d tel:1234</code></p>
  
  <p>Can anybody help me?</p>