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Samsung SCH-U520 is a phone released on December 7, 2006 by the former U.S. wireless operator Alltel Wireless. The phone was the first phone to support Alltel's Axcess Mobile Guide service. The service allows customers to hear voice turn-by-turn navigation, view maps, find locations, plan trips and more.
The use of vertical is a somewhat dated reference to older switching methods and the fact that these services can only be accessed by a telephone subscriber, going up (vertically) inside the local central office instead of out (horizontally) to another telephone company.
Native Wi-Fi calling refers to the ability of mobile phones on the service to seamlessly use Wi-Fi rather than the cellular network to connect normally dialed calls, when enabled. It does not refer to the ability to use third-party programs to make calls over Wi-Fi networks, which is generally always supported on smartphones.
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.
Wi-Fi calling, also called VoWiFi, [1] refers to mobile phone voice calls and data that are made over IP networks using Wi-Fi, instead of the cell towers provided by cellular networks. [2] Using this feature, compatible handsets are able to route regular cellular calls through a wireless LAN (Wi-Fi) network with broadband Internet , while ...
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On Tuesday, AT&T announced it has agreed to buy the Alltel domestic retail wireless business of Atlantic Tele-Network in an all-cash transaction valued at approximately $780 million. Atlantic ...
Alltel Family Finder: Similar to Verizon Wireless's "Family Locator" service, Alltel offered a service dubbed Alltel Family Finder where users on family plans could download software to their children's phones and use GPS technology to acquire real-time location information either directly on their phone or on the computer.