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2. Voice over LTE - Wikipedia

   en.wikipedia.org/wiki/Voice_over_LTE

   VoLTE calling. Voice over Long-Term Evolution (acronym VoLTE) is an LTE high-speed wireless communication standard for voice calls and SMS using mobile phones and data terminals. [1] [2] VoLTE has up to three times more voice [3] and data capacity than older 3G UMTS and up to six times more than 2G GSM.

3. AT&T set to beat Verizon by deploying high-definition calls ...

   www.aol.com/news/2014-05-01-att-volte-launch.html

   Eager to leverage the speed and efficiency of existing LTE networks, providers like AT&T and Verizon are busily trying to enhance voice call quality with a technology called Voice over LTE (VoLTE ...

4. Verizon (wireless service) - Wikipedia

   en.wikipedia.org/wiki/Verizon_(wireless_service)

   Because 4G LTE is a data-transmitting network, when it launched, Verizon customers' voice calls were still carried over the company's CDMA2000 network, [63] which was developed for 3G cellphones. In September 2014, Verizon launched voice over LTE (VoLTE) ; [ 64 ] this allowed voice calls to transmit via the data-only LTE network.

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

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

   Mobile virtual network operators (MVNOs) in the United States lease wireless telephone and data service from the four major cellular carriers in the country—AT&T Mobility, Boost Mobile, T-Mobile US, and Verizon—and offer various levels of free and/or paid talk, text and data services to their customers.

6. Comparison of mobile phone standards - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_mobile_phone...

   Cellular network standards and generation timeline. This is a comparison of standards of wireless networking technologies for devices such as mobile phones.A new generation of cellular standards has appeared approximately every tenth year since 1G systems were introduced in 1979 and the early to mid-1980s.

7. List of mobile network operators in the United States

   en.wikipedia.org/wiki/List_of_mobile_network...

   Acquired by Verizon Wireless and AT&T Mobility. [39] AT&T Wireless Services: GSM: EDGE: 22: October 2004: Acquired by Cingular Wireless, which later rebranded to AT&T Mobility. [40] Big Sky Mobile: GSM: EDGE: Unknown: 2017: Sold spectrum licenses to AT&T and T-Mobile and exited the business. [41] Blaze Wireless: GSM, UMTS: EDGE, HSPA+, LTE ...

8. IP Multimedia Subsystem - Wikipedia

   en.wikipedia.org/wiki/IP_Multimedia_Subsystem

   Examples of global standards based on IMS are MMTel which is the basis for Voice over LTE , Wi-Fi Calling (VoWIFI), Video over LTE (ViLTE), SMS/MMS over WiFi and LTE, Unstructured Supplementary Service Data (USSD) over LTE, and Rich Communication Services (RCS), which is also known as joyn or Advanced Messaging, and now RCS is operator's ...

9. AOL Mail

   mail.aol.com/?icid=aol.com-nav

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!