Talk:UMTS frequency bands/Archive 1

UMTS/HSDPA/HSUPA frequency bands deployment

 * 2100 (downlink) / 1900 (uplink) for Europe and Asia (usually referred simply as W-CDMA 2100)
 * 2110-2155 MHz (downlink) / 1710-1755 MHz (uplink) for America (e.g. T-Mobile)
 * 1900 / 850 (independently, for both the uplink and downlink) for America (e.g. AT&T Mobility)
 * 900 for Europe (not yet implemented)
 * 800 for Japan
 * 850 for Australia (only Telstra NextG)''
 * I think this section is not necessary, it's purpose is not clear. It seems it tries to explain which bands are used in which continent/countries, would be better to include this as an addtional column in the tables above? –Figarema 23:36, 28 August 2007 (UTC)
 * Worse: I doubt the information, as a Dutch website, citing the national telecom agency, claims 1900 Mhz band is used in The Netherlands. This article, however, does not cite anything. -DWizzy (talk) 08:25, 26 May 2008 (UTC)

No sources
I marked the page as 'unreferenced' while the only link given at the bottom of the page, does not link directly to information verifying the claims on this page. -DWizzy (talk) 08:25, 26 May 2008 (UTC)
 * I added a reference to a site containing an up to date list of networks and bands, do you think it's enough? Dudyk (talk) 14:03, 10 June 2009 (UTC)

Asia in the Region column
Isn't the use of "Asia" for the Region column misleading? All countries in Asia don't use the 2100, 1800 and 800 bands. India for example, only uses 2100. I recommend removing the word Asia and using country names instead. —Preceding unsigned comment added by 203.91.201.55 (talk) 09:35, 11 June 2010 (UTC)

Removed "Multi band" section from the article
I've removed the "Multi band" section from the article. The text is reproduced below to facilitate its insertion in another article.

This issue is not unique to UMTS and is better addressed in a more general article about mobile phones, or mobile networks, describing how handset makers and mobile operators market products and services that utilize multiple frequency bands and radio interfaces to provide greater customer convenience. Including the information here unfairly implies that this problem affects only UMTS bands. Since the needed context to describe how this affects all frequency bands means discussing non-UMTS bands, the information needs to go in a more general article in which it is more appropriate to discuss the implications of having mobile communications networks distributed all over the radio spectrum in jurisdictions throughout the world.

==Multi-band==

Today, most mobile phones support multiple bands as used in different countries to facilitate roaming. These are typically referred to as multi-band phones. Dual-band phones can cover networks in pairs such as 2100/900 (bands I/VIII) in Europe, Middle East, Asia, Oceania or 1900/850 MHz (bands II/V) in North and South America. With the recent release of AWS spectrum (band IV) in North America, the dual-band combo of 1700/2100 is also becoming popular there.

Roaming in Europe works well since all operators use the same bands. In the United States this is may not be the case "Seybold's Take: The fallacy of unlocked phones". European/Asian tri-band phones typically cover the 900, 1900 and 2100 MHz bands giving good coverage in Europe and allowing very limited use in North America, while North American tri-band phones utilize 850, 1900 and 2100 MHz for widespread North & South American service and good coverage for worldwide use thanks to the popularity of the 2100 MHz spectrum. AWS versions of phones support 900/1700/2100 allowing for North American coverage on AWS enabled networks and roaming coverage on 2100 MHz and on forthcoming 900 MHz overlays in Europe and Asia.

Most UMTS phones also operate on GSM as well, supporting EDGE to ensure data coverage where HSPA still lacks coverage. Note however, that while a phone may have overlapping GSM & UMTS frequency support, being tri-band/quad-band in GSM/GPRS/EDGE does not imply the same support for UMTS, as was the case with many early 2100 MHz-only UMTS devices.

Lead needs context
It looks like around the same as the text above was removed, the explanation of what UTMS is was also removed. Remember non-techincal readers (or readers like me who are acronym impaired by care about technology) might also read this article. We come here because we have no clue what it is, so it might be a good idea to give some context in the lead. I guessed that UTMS was Universal Mobile Telecommunications System, but if someone could verify that is right and maybe add some more context (without duplicating other articles) that would be appreciated. Thanks. W Nowicki (talk) 18:57, 19 June 2011 (UTC)

SMH
Anybody knows what the acronym SMH (see bands 12, 13, and 14) stands for? Jmgonzalez (talk) 17:03, 26 July 2011 (UTC)


 * I'm not quite sure, but I think it stands for "Specialized Mobile Handhelds". Nightwalker-87 (talk) 10:12, 21 September 2013 (UTC)