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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.
For service provided by cellular and VoIP carriers where the customer does not have a choice of local toll or long-distance carriers, all calls may be handled the same way. In North America, all areas formerly using 113 have been converted to using 411, and 11x is now reserved for vertical service codes. Outside North America, "11x" numbers are ...
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.
In general, the types of phones and other devices supported by the MVNOs are in line with the technologies used by the Mobile Network Operator (MNO), the underlying cellular network provider. All major and regional MNOs use 4G LTE / LTE Advanced and 5G NR protocols (2G and 3G having been deprecated and shut down), with GSM technologies.
3. Select your dialing options and click Next. 4. Enter your area code and click Next. 5. Select 2-3 access phone numbers and click Next. Note: You cannot manually type in an access number. An access number can only be selected from the list provided. 6. Confirm your settings and click Next. 7. Click Sign on.
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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.
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