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  2. Cell Broadcast - Wikipedia

    en.wikipedia.org/wiki/Cell_Broadcast

    A Cell Broadcast message is an unconfirmed push service, meaning that the originators of the messages do not know who has received the message, allowing for services based on anonymity. [1] Cell Broadcast is compliant with the latest EU General Data Protection Regulation (GDPR) as mobile phone numbers are not required by CB. The originator ...

  3. Type Allocation Code - Wikipedia

    en.wikipedia.org/wiki/Type_Allocation_Code

    The Type Allocation Code (TAC) is the initial eight-digit portion of the 15-digit IMEI and 16-digit IMEISV codes used to uniquely identify wireless devices.. The Type Allocation Code identifies a particular model (and often revision) of wireless telephone for use on a GSM, UMTS, LTE, 5G NR, iDEN, Iridium or other IMEI-employing wireless network.

  4. SIM Application Toolkit - Wikipedia

    en.wikipedia.org/wiki/SIM_Application_Toolkit

    In GSM networks, the SIM Application Toolkit is defined by the GSM 11.14 standard released in 2001. [1] [4] [6] From release 4 onwards, GSM 11.14 was replaced by 3GPP TS 31.111 which also includes the specifications of the USIM Application Toolkit for 3/4G networks. [2]

  5. Apple Push Notification service - Wikipedia

    en.wikipedia.org/.../Apple_Push_Notification_service

    The maximum notification payload size allowed using the HTTP/2 API is 4 kilobytes. [11] Apple shut down the legacy binary API at the end of March 2021. [12] The HTTP/2 provider for APNs uses TCP port 443 as the main port of communication, but developers are also allowed to use TCP port 2197 if outbound access to port 443 is blocked by firewalls ...

  6. What Does the Samsung S IV Mean for Apple? - AOL

    www.aol.com/news/2013-03-14-what-does-the...

    Samsung will be launching the newest version of its flagship handset, the Galaxy S IV, later today. The device is rumored to be a big improvement, with a larger, higher-resolution screen, and to ...

  7. Unstructured Supplementary Service Data - Wikipedia

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

    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.

  8. Some iPhone users can send texts when service is down ... - AOL

    www.aol.com/iphone-users-send-texts-down...

    The iPhone 14, 15 and 16 models are all capable of connecting to satellites, but iOS 18 is required to send text messages, according to Apple. To make sure your phone is updated, go to Settings ...

  9. iMessage - Wikipedia

    en.wikipedia.org/wiki/IMessage

    iMessage is an instant messaging service developed by Apple Inc. and launched in 2011. iMessage functions exclusively on Apple platforms – including iOS, iPadOS, macOS, watchOS, and visionOS – as part of Apple's approach to inter-device integration, which has been described by media outlets as a means of achieving vendor lock-in.