How To Hide Your Number When Calling. You can also hide your caller ID in Google Voice. Hide your caller ID for all calls.
If you have a geographic number for the line you can choose whether to display this or the 056 number. Block your number on a call by call basis. Open the Voice app.
There are some wireless carriers that dont offer you this option.
Even though theres no setting for this you can use a prefix before you dial the number. Toggle between the options to either to showhide your number. Voila your text is sent. Use 67 to hide your phone number On a per-call basis you cant beat 67 at hiding your number.