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  2. Emergency Cell Broadcast System - Wikipedia

    en.wikipedia.org/wiki/Emergency_Cell_Broadcast...

    Emergency Cell Broadcast System. An Emergency Cell Broadcast on an iOS smartphone in Filipino, indicating a Heavy Rainfall Warning in Metro Manila and nearby Rizal province. Emergency Cell Broadcast System (ECBS) is an alert broadcast system in the Philippines, designed to disseminate emergency alerts and warnings to mobile devices via cell ...

  3. Chikka - Wikipedia

    en.wikipedia.org/wiki/Chikka

    Chikka, short for Chikka Text Messenger, was an Internet-based instant messaging application that supported free SMS or text messaging between online users and offline mobile subscribers. Chikka was released by Chikka Philippines, Inc. in 2000 and eventually established its connection with the country's network operators Smart Communications ...

  4. Text messaging - Wikipedia

    en.wikipedia.org/wiki/Text_messaging

    Text messaging. A text message using SMS – the 160 character limit and difficulty of typing on feature phone keypads led to the abbreviations of "SMS language". A text message conversation on an iPhone. Text messaging, or texting, is the act of composing and sending electronic messages, typically consisting of alphabetic and numeric ...

  5. iPhone's satellite messaging: A lifeline in Hurricane Helene ...

    www.aol.com/news/iphones-satellite-messaging...

    To use SMS messaging via satellite, your carrier must support it. Messages via satellite is available in the U.S. and Canada. It's free for two years after the activation of an iPhone 14 or later ...

  6. Reverse 1-1-2 - Wikipedia

    en.wikipedia.org/wiki/Reverse_1-1-2

    Reverse 1-1-2 is a public safety communications technology used by public safety organizations throughout the world to communicate with groups of people in a defined geographic area. Reverse 1-1--2 allows authorities to rapidly warn those in danger, directly through their mobile phones. The system uses preferably Cell Broadcast technology to ...

  7. Cell Broadcast - Wikipedia

    en.wikipedia.org/wiki/Cell_Broadcast

    Public warning alerts using embedded Cell Broadcast feature on Android 12. Cell Broadcast (CB) is a method of sending short messages to multiple mobile telephone users in a defined area at the same time. It is defined by the ETSI 's GSM committee and 3GPP and is part of the 2G, 3G, 4G LTE (telecommunication) and 5G standards. [1]

  8. Satellite emergency notification device - Wikipedia

    en.wikipedia.org/wiki/Satellite_emergency...

    A Satellite Emergency Notification Device or SEND is a portable emergency notification and locating device which uses commercial satellite systems rather than the COSPAS-SARSAT satellite system. An example of this device is SPOT. The devices use an internal GPS chip to gather location information. When the SEND is triggered, this information is ...

  9. SMS - Wikipedia

    en.wikipedia.org/wiki/SMS

    An SMS message written on a Motorola Razr V3. Short Message Service, commonly abbreviated as SMS, is a text messaging service component of most telephone, Internet and mobile device systems. It uses standardized communication protocols that let mobile phones exchange short text messages, typically transmitted over cellular networks.