Unknown number on cell phone

[jaggu]

Hello,
i want to change my number to unknown number

 

[Saga Lout]

If you want to hide your ID on outgoing calls, don't ring me - I always decline unknown callers. In the UK you prefix the dialled number with 141 to hide that ID but I don't know the methodology for other countries' telephone systems.

Most mobile phones I've come across have that facility in the settings.