Wangiri and ping calls: the single ring that costs you money

A call too short to be honest

Your phone rings once, then hangs up before you can answer. A missed call appears, often from a foreign or unknown number. Curiosity nudges you to call back, and that is exactly the aim. This technique has a name, wangiri, a Japanese word that describes the single-ring call. It is also known as a ping call.

How the trap works

The number shown is designed to make you call back to a premium rate line. As soon as you connect, billing starts, and the criminal tries to keep you on the line as long as possible: an endless hold message, a fake voicemail, a fake customer service. Every minute that passes feeds their earnings, taken from the cost of your call.

The method works at scale. Automated systems place thousands of very short calls, betting on the call-back reflex of a fraction of the recipients. You were not targeted personally, which does not lessen the real cost if you take the bait.

The warning signs

A few features come up almost every time.

• A single-ring call, too brief to pick up.
• An unusual foreign dialling code or a special-rate number.
• A repeated call from similar numbers.
• No voicemail left, whereas a legitimate call often leaves one.

The right reflex: do not call back

The rule fits in one sentence: never call back an unknown number seen as a missed call, especially if it comes from abroad. If the person had a legitimate reason to reach you, they will try again or leave a message.

Before calling back any number that intrigues you, take the time to examine it. The phone checker lets you analyse a number and its dialling code to spot a risky prefix before you dial anything. A simple glance at the code is often enough: if it matches none of your contacts and no expected country, hold off.

Finally, block the number from your phone to avoid repeated rings. Most devices offer this option in two taps.

If you have already called back

Keep an eye on your next bill and contact your provider if you see an unusual amount, as some can dispute fraudulent premium rate calls. Report the number to help get it shut down and to alert other users. You will find the steps to take and useful contacts at Action Fraud.

To place this fraud among the other traps targeting your line, return to the guide Phone scams.