Use Drop In with the Alexa App
Use the Alexa app to connect with your Alexa contacts and Echo devices in your home.
- Open the Alexa app 
.  - Select More 
.  -  Open Communicate 
.  - Select the Drop In icon.
 - Select the name of the device that you want to drop in on.
 
To end the Drop In, touch the screen and select Hang Up.
 
    Note: You can use the Alexa app to drop in on other devices, but other devices can't drop in on the Alexa app. To drop in on a contact with a different Amazon account, your contact must grant you drop in permissions.