How do I block masked or private calls?

A masked call (also called private, anonymous or unknown number) is a call where the caller's number is deliberately hidden. These calls often come from call centers or telemarketing, but can also be legitimate, e.g. a doctor, a delivery person or any professional calling from a masked number. You can also make a masked call yourself by dialing #31# followed by the number to call (e.g. #31#0612345678): your contact will then see "Private number".

Android

Saracroche can automatically block all masked calls. To enable this protection:

1. Open the Saracroche app.
2. Go to the Protection section.
3. Enable the Block masked calls option.

Once enabled, any incoming call with a hidden number is automatically rejected without your phone ringing.

iOS

It is not possible to block masked calls on iOS. Apple does not give third-party apps the access needed to filter calls based on number presentation. No app on the App Store can offer this feature.

Tip if you are with Free Mobile (France), you can enable masked-call filtering directly from your subscriber account, without an app.