Universal Method
Before dialing the phone number you want to call, simply type #31# followed by the number itself.
For example, to call 0501234567, dial #31#0501234567 — this way, the call will come from a hidden number and your number will not appear to the person receiving the call.
Android Devices
Open Settings > Apps > Phone (or “Calls”) > Additional Settings > Caller ID > and select Hide Number.
From that point onward, all calls you make will appear as hidden.
iPhone Devices
Go to Settings > Phone > Show My Caller ID and switch the option off.
Your number will then be hidden in all outgoing calls.
Landline Phones
You can try dialing #31# before the number.
If that doesn’t work, try *43 before the number.
Keep in mind that this action may involve additional charges depending on your service provider.
These methods hide your number only for a specific call or until you change the setting — they don’t provide permanent anonymity.
Responsible Use of Hidden Numbers
It’s important to use this feature responsibly and ethically.
Using a hidden call for malicious purposes — such as harassment, threats, or violating someone’s privacy — is dangerous and illegal.
Phone harassment from a blocked number can seriously harm the victim and disrupt their daily life.
In Israel, the law treats phone harassment as a criminal offense, allowing authorities to identify and prosecute the harasser.
Therefore, hidden numbers should be used only for legitimate reasons, like protecting your privacy during a personal conversation — not to harm others.
Misusing hidden calls may lead to legal action or even criminal charges.
Identifying Hidden Numbers
Today, several apps in Israel help fight phone harassment from hidden numbers.
The leading app in this field is Traceback, which enables users to quickly identify unknown or hidden callers and protect themselves from unwanted calls in the future.
Thanks to tools like these, people gain more control over who’s trying to contact them — even when the number is concealed — helping them maintain peace and personal security.
Receiving a hidden call once felt uncertain, but now, with Traceback, every such call becomes an opportunity to find out who’s really behind it.
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