On Android devices, a suppressed number display occurs when the outgoing call intentionally hides the caller’s identification from the recipient. Instead of a phone number, the recipient’s device might show “Private Number,” “Unknown Number,” or “Restricted Number.” This function is achieved through specific dialing codes or settings within the phone’s operating system, allowing the caller to maintain anonymity during the communication. For example, preceding a dialed number with “*67” (in North America) will typically block the number’s display on the recipient’s caller ID.
The capacity to prevent caller ID display provides individuals with enhanced privacy during communication. This feature is beneficial in situations where individuals may wish to contact a business or entity without disclosing their personal number. Historically, this functionality has been used to protect individuals from unwanted solicitation or potential harassment following a call. The choice to withhold caller identification rests with the originating caller and is subject to local regulations regarding call privacy.