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  2. Last-call return - Wikipedia

    en.wikipedia.org/wiki/Last-call_return

    Philippines *999 In Gibraltar and formerly in Ireland, ex-directory or unlisted numbers are withheld by default. In Germany , most contemporary telephones have a specific button functioning as call return, which is an internal function of the telephone itself (the number of the last caller is stored inside the phone at the time of that last ...

  3. Callback (telecommunications) - Wikipedia

    en.wikipedia.org/wiki/Callback_(telecommunications)

    For example, if a customer from Spain is calling a phone number in Australia, and it costs 8 cents per minute to phone Spain from the US (the callback, which is an incoming call) and 20 cents per minute to phone Australia from the US (the destination call, which is an outgoing call), then the caller will pay a total of 28 US cents a minute ...

  4. Unstructured Supplementary Service Data - Wikipedia

    en.wikipedia.org/wiki/Unstructured_Supplementary...

    USSD on a Sony Ericsson mobile phone (2005). Unstructured Supplementary Service Data (USSD), sometimes referred to as "quick codes" or "feature codes", is a communications protocol used by GSM cellular telephones to communicate with the mobile network operator's computers.

  5. You can now add a callback number to your lost (and locked ...

    www.aol.com/news/2014-08-08-android-device...

    One way to do that is through Android Device Manager, which now has the capability to add a callback number on the phone's lock screen that the finder can contact. You can now even write a message ...

  6. Automatic ring back - Wikipedia

    en.wikipedia.org/wiki/Automatic_ring_back

    Automatic ring back is a service offered by phone companies.. On making a telephone call to a number that is engaged, automatic ring back is a service provided by the telephone company whereby, when the called number becomes available, the caller is rung back, usually with a distinctive "ring back" ring.

  7. This is why you should never call back an unknown number - AOL

    www.aol.com/article/lifestyle/2019/05/03/this-is...

    So if your bank leaves a voicemail, don’t just call back the number from the missed call. Find the official number online and dial that, suggests Levin. “Never trust—always verify,” he says.

  8. South Africa's Vodacom faces protests over call-back service ...

    www.aol.com/news/south-africas-vodacom-faces...

    Vodacom was ordered in 2016 by the country's top court to pay Nkosana Makate for his role in creating the company's call-back messaging service. The Constitutional Court did not set a specific ...

  9. Vertical service code - Wikipedia

    en.wikipedia.org/wiki/Vertical_service_code

    A vertical service code (VSC) is a sequence of digits and the signals star (*) and pound/hash (#) dialed on a telephone keypad or rotary dial to access certain telephone service features. [1]