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  2. WhatsApp - Wikipedia

    en.wikipedia.org/wiki/WhatsApp

    WhatsApp (officially WhatsApp Messenger) is an American instant messaging (IM) and voice-over-IP (VoIP) service owned by technology conglomerate Meta. [13] It allows users to send text, voice messages and video messages, [14] make voice and video calls, and share images, documents, user locations, and other content.

  3. Reception and criticism of WhatsApp security and privacy ...

    en.wikipedia.org/wiki/Reception_and_criticism_of...

    In May 2012 security researchers noticed that new updates of WhatsApp sent messages with encryption, [40] [41] [42] but described the cryptographic method used as "broken." [43] [44] In August of the same year, the WhatsApp support staff stated that messages sent in the "latest version" of the WhatsApp software for iOS and Android (but not BlackBerry, Windows Phone, and Symbian) were encrypted ...

  4. Encryption: Why texting your friends on WhatsApp could soon ...

    www.aol.com/encryption-why-texting-friends...

    WhatsApp – and other messaging platforms, such as Signal – have urged the UK government to protect the encryption technology that ensures their messages stay secure as they are sent. It could ...

  5. Instant messaging - Wikipedia

    en.wikipedia.org/wiki/Instant_messaging

    Often called "chat apps", to distinguish it from cellular-based SMS and MMS "texting" services, these newer services were specially designed to be run on mobile platforms, as opposed to older services like AIM and MSN; BlackBerry Messenger, released in 2005, was one of the influential pioneers of mobile IM, [7] and led to other companies ...

  6. Comparison of cross-platform instant messaging clients

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

    Similar to SMS requirements, RCS messaging requires a valid SIM card to be inserted in the device. RCS chat features may continue to work for up to 14 days, when a SIM card is removed from the device. [107] Yes, only for RCS chats — [clarification needed] Yes ICQ: Phone number Phone required for initial registration.

  7. Why did I receive an email from MAILER-DAEMON? - AOL Help

    help.aol.com/articles/what-is-a-mailer-daemon...

    A single misplaced letter could cause a delivery failure. If the message keeps getting bounced back, make sure the account is closed or hasn't been moved. Each delivery failure message will provide info on when the original email was sent ("Arrival-Date"), the reason for the failure ("This user doesn't have a aol.com account (XXX123@aol.com ...

  8. Text messaging - Wikipedia

    en.wikipedia.org/wiki/Text_messaging

    Mobile service providers in Finland offered contracts in which users can send 1000 text messages a month for €10. In Finland, which has very high mobile phone ownership rates, [citation needed] some TV channels began "SMS chat", which involved sending short messages to a phone number, and the messages would be shown on TV. Chats are always ...

  9. Fix sending and receiving issues with third-party email apps

    help.aol.com/articles/cant-send-or-receive-email...

    1. Sign into AOL Mail on a web browser. 2. Compose an email and add your own email address in the "To" field. 3. Send the email and check if it arrives.