4G

4G is the fourth generation technology standard for broadband s, succeeding 3G. A 4G system must provide capabilities defined by in . Potential and current applications include amended access, , gaming services, , , and .
==History==
In March 1998, the (ITU-R) specified a set of requirements for 4G standards, named the International Mobile Telecommunications Advanced (IMT-Advanced) specification, setting peak speed requirements for 4G service at 100 megabits per second (Mbit/s, or 12.5 megabytes per second) for high mobility communication (such as from trains and cars) and 1 gigabit per second (Gbit/s) for low mobility communication (such as pedestrians and stationary users)., Report M.2134, Requirements related to technical performance for IMT-Advanced radio interface(s), Approved in November 2008
===Deployment===
The world's first publicly available (LTE) services were opened on December 14, 2009 in two Scandinavian capitals: a system by and in , and a system by in . Both were branded 4G with user terminals were manufactured by Samsung.
In early 2012, was criticized for marketing their infrastructure as "4G" for iPhone 4S.AT&T to “Upgrade” Millions of 4G/LTE Phones to Pretend They Are 5G by Chris Dunphy, Mobile Internet Resource Center. 2018-12-21. Updated 2019-02-05.In a triumph of marketing, AT&T upgrades Apple's iPhone to '4G' by Nilay Patel, The Verge. 2012-03-08. In September 2012, Apple released the iPhone 5, the first model with actual support for 4G LTE for data.iPhone 5 is first Apple phone with 4G by John McCann, TechRadar. 2012-09-12. However, early 4G phones that do not support (iPhone 5C, 5S and earlier) will no longer be able to make calls when 3G networks are retired in 2022.T-Mobile Network Evolution, T-Mobile. Accessed 2021-10-10.Devices Working on AT&T Network (PDF), AT&T. 2021-09-03.CDMA Network Retirement, Verizon. Accessed 2021-10-10. In October 2020, Apple introduced the iPhone 12 product line, the first to support 5G connectivity.iPhone 12 only uses 5G when necessary to save battery life by Chaim Gartenberg, The Verge. 2020-10-13.
==References==
==External links==
*4G LTE and 5G coverage at AT&T
*4G LTE and 5G coverage at T-Mobile
**Nationwide coverage at Sprint
*4G LTE and 5G coverage at Verizon
**What is the difference between 3G, 4G and 5G? (2019-11-18)
* at Wikipedia
Category:Phones
Category:Terms