It works with call forwarding feature in incoming calls only. Enabling this feature displays your CallHippo number on your device during an incoming call, helping you 
identify calls from CallHippo. However, disabling it will display the caller’s name directly. 
Steps: 
Login to your CallHippo account using the link(web.callhippo.com) 
 
Click on NUMBERS tab present on left hand side of the tool 
 
Click on gear symbol for number settings 
 
Turn ON the “Show CallHippo Number in Incoming Forwarded 
Calls” feature 
 

Hope this helps! 
For further queries, please contact us at support@callhippo.com