Editing 3G (section)

=== Break-up of 3G systems ===
The 3G (UMTS and CDMA2000) research and development projects started in 1992. In 1999, ITU approved five radio interfaces for IMT-2000 as a part of the ITU-R M.1457 Recommendation; [[WiMAX]] was added in 2007.<ref>{{cite press release|url=http://www.itu.int/newsroom/press_releases/2007/30.html|title=ITU Radiocommunication Assembly approves new developments for its 3G standards|publisher=ITU|access-date=1 June 2009| archive-url= https://web.archive.org/web/20090519050045/http://www.itu.int/newsroom/press_releases/2007/30.html| archive-date= 19 May 2009 }}</ref><!--DASHBot-->

There are evolutionary standards (EDGE and CDMA) that are backward-compatible extensions to pre-existing [[2G]] networks as well as revolutionary standards that require all-new network hardware and frequency allocations. The cell phones use UMTS in combination with 2G GSM standards and bandwidths, but ''do not support EDGE''. The latter group is the [[Universal Mobile Telecommunications System|UMTS]] family, which consists of standards developed for IMT-2000, as well as the independently developed standards [[DECT]] and WiMAX, which were included because they fit the IMT-2000 definition.

While [[Enhanced Data Rates for GSM Evolution|EDGE]] fulfills the 3G specifications, most GSM/UMTS phones report EDGE ("2.75G") and UMTS ("3G") functionality.<ref>{{cite web|url=https://www.makeuseof.com/tag/edge-3g-h-etc-mobile-networks/|title=EDGE, 3G, H+, Etc: What Are All These Mobile Networks?|date=2019-02-15|website=MakeUseOf|language=en-US|access-date=2019-08-17}}</ref>