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  2. Preferred Roaming List - Wikipedia

    en.wikipedia.org/wiki/Preferred_Roaming_List

    The Preferred Roaming List (PRL) is a database residing in a wireless (primarily CDMA) device, such as a cellphone, that contains information used during the system selection and acquisition process. In the case of R-UIM -based CDMA devices, the PRL resides on the R-UIM .

  3. How to avoid costly iPhone data roaming charges - AOL

    www.aol.com/news/2009-10-14-how-to-avoid-costly...

    Recently the Los Angeles Times showcased a problem that more and more iPhone users are running into when they travel; expensive data roaming charges. The article profiles the plight of Nathan ...

  4. List of mobile virtual network operators in the United States

    en.wikipedia.org/wiki/List_of_mobile_virtual...

    Operates on Verizon's native 4G/LTE network and WiFi calling (no 3G – Verizon will shut this down at the end of 2020 anyway or roaming- some reports of LTEiRA roaming with talk and text). No toll-free customer service #; service provided via in-app chat, text, Facebook, or Twitter; callbacks by request.

  5. Mobile data offloading - Wikipedia

    en.wikipedia.org/wiki/Mobile_data_offloading

    Wi-Fi is considered to be a non-3GPP WLAN radio access network (RAN). [18] 3GPP has also specified an alternative loosely coupled solution for Wi-Fi. The approach is called Interworking Wireless LAN (IWLAN) [19] architecture and it is a solution to transfer IP data between a mobile device and operator's core network through a Wi-Fi access. In ...

  6. Massive AT&T, T-Mobile and Verizon outage for US ... - AOL

    www.aol.com/massive-t-t-mobile-verizon-161520090...

    An international roaming outage is leaving customers of the three major US mobile carriers in the dark, making it difficult or impossible for American customers who are currently out of the ...

  7. Unstructured Supplementary Service Data - Wikipedia

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

    The user submits a code corresponding to the service available. USSD can be used to provide independent calling services such as a callback service (to reduce phone charges while roaming), enhance mobile marketing capabilities or interactive data services. USSD is commonly used by prepaid GSM cellular phones to query the available balance.

  8. PRIVATE WiFi Mobile FAQs - AOL Help

    help.aol.com/articles/private-wifi-mobile-faqs

    It’s no secret that public WiFi hotspots aren’t secure. With PRIVATE WiFi Mobile by AOL, you can encrypt everything you send and receive over public WiFi with bank-level security. Feel confident surfing, sharing, shopping, and banking from your mobile device knowing you are better protected. Activate your PRIVATE WiFi Mobile by AOL benefit ...

  9. Verizon (mobile network) - Wikipedia

    en.wikipedia.org/wiki/Verizonwireless.com

    Verizon Wireless offers mobile phone services through a variety of devices. [10] Its LTE in Rural America Program, with 21 rural wireless carriers participating, covers 2.7 million potential users in 169 rural counties. [11] Verizon Wireless announced in 2015 that it was developing a 5G, or fifth-generation, network. [12]