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  2. Emergency telephone number - Wikipedia

    en.wikipedia.org/wiki/Emergency_telephone_number

    This means that a traveller visiting a foreign country does not have to know the local emergency numbers. The mobile phone and the SIM card have a preprogrammed list of emergency numbers. When the user tries to set up a call using an emergency number known by a GSM or 3G phone, the special emergency call setup takes place. The actual number is ...

  3. CallApp - Wikipedia

    en.wikipedia.org/wiki/CallApp

    CallApp was invented and founded in 2011, [1] in Tel Aviv, Israel by its former CEO, Oded Volovitz and current CEO, Amit On. [2] raising $1 million in seed investment. [3]It was initially introduced publicly at the TechCrunch Disrupt New York 2012, where it launched its application for Android, [4] at the DEMO conference, [2] and at the Mobile World Congress, Barcelona. [5]

  4. Textfree - Wikipedia

    en.wikipedia.org/wiki/Textfree

    TextFree (formerly called Pinger and sometimes stylized as textfree) is a mobile application and web service that allows users to send and receive text messages, as well as make and receive VoIP phone calls, for free over the internet. The service costs nothing because it is supported by ads, but users have the option of paying for an ad-free ...

  5. Ringo (software) - Wikipedia

    en.wikipedia.org/wiki/Ringo_(software)

    Ringo was an international calling app for smartphones that utilized dedicated phone circuits for making calls. [3] Ringo used local phone networks instead of the user's smart phone's Internet connection to connect calls. [4] The caller, but not the called party, downloaded and used the app to make calls. [5]

  6. Click-to-call - Wikipedia

    en.wikipedia.org/wiki/Click-to-call

    Click-to-call, also known as click-to-talk, click-to-dial, click-to-chat and click-to-text, is a form of Web-based communication in which a person clicks an object (e.g., button, image or text) to request an immediate connection with another person in real-time either by phone call, Voice-over-Internet-Protocol (), or text.

  7. Wi-Fi calling - Wikipedia

    en.wikipedia.org/wiki/Wi-fi_calling

    Wi-Fi calling, also called VoWiFi, [1] refers to mobile phone voice calls and data that are made over IP networks using Wi-Fi, instead of the cell towers provided by cellular networks. [2] Using this feature, compatible handsets are able to route regular cellular calls through a wireless LAN (Wi-Fi) network with broadband Internet , while ...

  8. Comparison of cross-platform instant messaging clients

    en.wikipedia.org/wiki/Comparison_of_cross...

    Only one mobile phone is allowed to be the primary device, as attempting to login to the messaging app on another mobile phone would trigger the previous phone to be logged out. The secondary device is a computer running a desktop operating system, which serves as a companion for the primary device.

  9. RealCall - Wikipedia

    en.wikipedia.org/wiki/Realcall

    RealCall is a US-based AI caller identification and call blocking smartphone application, used to detect, engage and block call and SMS scamming and spamming.It has AI algorithms with built-in free reverse phone lookup service and customized answer bots for detection, engagement and blocking of unwanted calls and messages. [1]