help • 9 Starting and receiving phone calls • Set or Hide Phone numbers
9.2 Set or Hide Phone numbers
You have several phone numbers and would like one of these numbers to be signalled by default for outgoing calls?
Or would you like to make an anonymous call? Swyx Mobile gives you the option of hiding your phone number for external calls.
To define which of your phone numbers is to be signalled by default
1 Tap on Settings .
2 Under Calls | My Caller ID, select the default number to be signalled for external calls.
*The selected number is then signalled for every outgoing call, unless you actively select a different number for each call.
To hide your phone number
1 Tap on Settings .
2 Tap Calls | My Caller ID.
3 Tap on Hidden.
4 Your phone number will no longer be displayed on the other party’s device for external calls.
* 
Your phone number is hidden for external calls until you deactivate the option again.