GSM frequency bands info - LG Optimus 4X HD
Extracted from Wikipedia: http://en.wikipedia.org/wiki/GSM_frequency_bands
For those who have doubts and are a little lazzy to search, here you can get some info
GSM-900, GSM-1800 and EGSM/EGSM-900
GSM-900 and GSM-1800 are used in most parts of the world: Europe, Middle East, Africa, Australia, Oceania (and most of Asia). In South and Central America the following countries use the following:
Peru – GSM-1900
Costa Rica – GSM-1800
Brazil – GSM-850, 900, 1800 and 1900
Guatemala – GSM-850, GSM-900 and 1900
El Salvador – GSM-850, GSM-900 and 1900
Venezuela – GSM-850, GSM-900 and 1900
GSM-900 uses 890–915 MHz to send information from the mobile station to the base station (uplink) and 935–960 MHz for the other direction (downlink), providing 124 RF channels (channel numbers 1 to 124) spaced at 200 kHz. Duplex spacing of 45 MHz is used. Guard bands 100 kHz wide are placed at either end of the range of frequencies.[2]
GSM-1800
GSM-1800 uses 1,710–1,785 MHz to send information from the mobile station to the base transceiver station (uplink) and 1,805–1,880 MHz for the other direction (downlink), providing 374 channels (channel numbers 512 to 885). Duplex spacing is 95 MHz. GSM-1800 is also called DCS (Digital Cellular Service) in the United Kingdom, while being called PCS in Hong Kong[3] – not to mix up with GSM-1900 which is commonly called PCS in the rest of the world. Mobile Communication Services on Aircraft (MCA) uses GSM1800.[4]
GSM-850 and GSM-1900
GSM-850 and GSM-1900 are used in Argentina, Brazil, Canada, the United States and many other countries in the Americas.
GSM-850 uses 824–849 MHz to send information from the mobile station to the base station (uplink) and 869–894 MHz for the other direction (downlink). Channel numbers are 128 to 251.
GSM-850 is also sometimes called GSM-800 because this frequency range was known as the "800 MHz band" (for simplification) when it was first allocated for AMPS in the United States in 1983.
The term Cellular is sometimes used to describe the 850 MHz band, because the original analog cellular mobile communication system was allocated in this spectrum.
GSM-1900 uses 1,850–1,910 MHz to send information from the mobile station to the base station (uplink) and 1,930–1,990 MHz for the other direction (downlink). Channel numbers are 512 to 810.
PCS is the original name in North America for the 1,900 MHz band. It is an initialism for Personal Communications Service.
GSM-450
Another less common GSM version is GSM-450.[5] It uses the same band as, and can co-exist with, old analog NMT systems. NMT is a first generation (1G) mobile phone system which was primarily used in Nordic countries, Benelux, Alpine Countries, Eastern Europe and Russia prior to the introduction of GSM. It operates in either 450.4–457.6 MHz paired with 460.4–467.6 MHz (channel numbers 259 to 293), or 478.8–486 MHz paired with 488.8–496 MHz (channel numbers 306 to 340). The GSM Association claims one of its around 680 operator-members has a license to operate a GSM 450 network in Tanzania. However, currently all active public operators in Tanzania use GSM 900/1800 MHz. Overall, where the 450 MHz NMT band exists, it either still runs NMT, or its been replaced by CDMA. GSM-450 is a provision; it has not seen commercial deployment.
GSM frequency usage around the world
The Americas
In North America, GSM operates on the primary mobile communication bands 850 MHz and 1,900 MHz. In Canada, GSM-1900 is the primary band used in urban areas with 850 as a backup, and GSM-850 being the primary rural band. In the United States, regulatory requirements determine which area can use which band.
GSM-1900 and GSM-850 are also used in most of South and Central America, and both Ecuador and Panama use GSM-850 exclusively (Note: Since November 2008, a Panamanian operator has begun to offer GSM-1900 service). Venezuela and Brazil use GSM-850 and GSM-900/1800 mixing the European and American bands. Some countries in the Americas use GSM-900 or GSM-1800, some others use three: GSM-850/900/1900, GSM-850/1800/1900, GSM-900/1800/1900 or GSM-850/900/1800. Soon some countries will use GSM-850/900/1800/1900 MHz like the Dominican Republic, Trinidad & Tobago and Venezuela.
In Brazil, the 1,900 MHz band is paired with 2,100 MHz to form the IMT-compliant 2,100 MHz band for 3G services.
The result is a mixture of usage in the Americas that requires travelers to confirm that the phones they have are compatible with the band of the networks at their destinations. Frequency compatibility problems can be avoided through the use of multi-band (tri-band or, especially, quad-band) phones.
Africa, Europe, Middle East and Asia
In Africa, Europe, Middle East and Asia, most of the providers use 900 MHz and 1800 MHz bands. GSM-900 is most widely used. Fewer operators use DCS-1800 and GSM-1800. A dual-band 900/1800 phone is required to be compatible with almost all operators. At least the GSM-900 band must be supported in order to be compatible with many operators. However, Thailand has also approved for some time now the use of the GSM-1900 band in an attempt to alleviate network congestion.
Multi-band and multi-mode phones
Today, most telephones 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 GSM networks in pairs such as 900 and 1,800 MHz frequencies (Europe, Asia, Australia and Brazil) or 850 and 1900 (North America and Brazil). European tri-band phones typically cover the 900, 1800 and 1900 bands giving good coverage in Europe and allowing limited use in North America, while North American tri-band phones utilize 850, 1,800 and 1,900 for widespread North American service but limited worldwide use. A new addition has been the quad-band phone, also known as a world phone, supporting all four major GSM bands, allowing for global use (excluding non-GSM countries such as Japan or South Korea).
There are also multi-mode phones which can operate on GSM as well as on other mobile phone systems using other technical standards or proprietary technologies. Often these phones use multiple frequency bands as well. For example, one version of the Nokia 6340i GAIT phone sold in North America can operate on GSM-1900, GSM-850 and legacy TDMA-1900, TDMA-800, and AMPS-800, making it both multi-mode and multi-band. As a more recent example the Apple iPhone 5 and iPhone 4S support quad-band GSM at 850/900/1,800/1,900 MHz, quad-band UMTS/HSDPA/HSUPA at 850/900/1,900/2,100 MHz, and dual-band CDMA EV-DO Rev. A at 800/1,900 MHz, for a total of 'six' different frequencies (though at most four in a single mode). This allows the same handset to be sold for AT&T Mobility, Verizon, and Sprint in the U.S. as well as a broad range of GSM carriers worldwide such as Vodafone, Orange and T-Mobile (Excluding-US), many of whom offer official unlocking.
Note that while the Nexus One, like many other devices on the market, may also become available in a UMTS I/II/IV or 2,100/1,900/850 MHz combo,[7] it would still be considered tri-band UMTS, not quad-band, as the hardware is limited to supporting any three bands at one time. Further, as HSPA runs atop UMTS, it would not be considered a "mode" by strict definition.
Related
[Q] Is it possible to get the T Mobile 3G network on an AT&T Tilt 2 device?
I purchased a jailbroken AT&T Tilt 2 online but Im using T Mobile service and I was told that I wouldn't be able to access the T Mobile 3g Network with this device. Could someone verify that this true or if not can someone give me some tips on how to set it up on my device.
Its true, because I have a Tilt 2 unlocked to T-Mobile as well. Is there a way to get 3G speeds, I don't know. But honestly, I've never really noticed a difference. But then again, I do stay away from data heavy sites like Youtube and whatnot.
Hmm, interesting question. The main issue is whether the phone has the right bands to connect to the 3G network in question. Its a hardware issue, and either the phone has the right bands built into the chipset or it doesn't. There is no way to change this with software or by changing settings. T-Mob uses 1700 and 2100 MHz bands, where ATT uses 850 and 1900 MHz bands. HOWEVER, the ATT branded Tilt 2 also has the 2100 MHz band for international use. If your T-Mob service area is on the 2100 MHz bands, its possible (if you area is on 1700 MHz, its not going to work no matter what). In theory, it SHOULD work. I've made many trips to Japan, which uses 2100 MHZ for both voice and data, and my Tilt 2 (and old Tilt before it) has always worked flawlessly on their networks. But whether it really works or not, I have no idea. Searching around the net yields some posts on other forums asking the same exact question, with conflicting answers (perhaps somebody on here can enlighten?). My gut says, its either its going to work or its not, it shouldn't take any additional setup. Have you tried it yet? But in short, it was a mistake to buy the ATT branded version. You should have bought the T-Mob branded Touch Pro 2.
Oh, and wrong subforum, BTW. This has nothing to do with ROM development. This should be in the Touch Pro 2, Tilt 2 General forum. But don't cross post there, the mods will probably move this thread over there for you.
redpoint73 said: ...snip... T-Mob uses 1700 and 2100 MHz bands, where ATT uses 850 and 1900 MHz bands. HOWEVER, the ATT branded Tilt 2 also has the 2100 MHz band for international use. If your T-Mob service area is on the 2100 MHz bands, its possible (if you area is on 1700 MHz, its not going to work no matter what). In theory, it SHOULD work. I've made many trips to Japan, which uses 2100 MHZ for both voice and data, and my Tilt 2 (and old Tilt before it) has always worked flawlessly on their networks. ...snip... Click to expand... Click to collapse The 2100 MHz band you're referring to is different on both companies' devices. For T-Mobile, 2100MHz is the upload frequency. The worldphone AT&T 2100MHz band is a download frequency. 3G requires 2 frequencies to operate in that manner. The 2100MHz frequency is accompanied by the 1900MHz frequency for uploads. The AT&T Tilt2 has this frequency set to allow both. As for Japan, I didn't know they were on the 2100MHz band. I've only every seen a couple of companies on 850, 1500, or 1700 MHz. Where were you that you used 2100MHz or which company? I just like to keep up on where the bands are useful when I make trips to Asia.
Ahh, that's right, I think I did read somewhere, that the 1700/2100 MHz bands are used by T-Mob as download/upload. Not like ATT, where which of the 850,1900 MHz band is used for 3G depends on the geographic location/market. That means the OP is SOL on getting 3G on the Tilt2, right? He would need BOTH the 1700 and 2100 MHz bands on his phone? Japan uses 2100 MHz exclusively, standardized nationwide, as far as I know. Same with South Korea (although ATT lists that one carrier in S. Korea also uses CDMA 1800, not sure what the deal with that is). If the 2100 MHz band on the ATT Tilt 2 is just for download, wouldn't this mean that my phone would not be able to connect to the data network in Japan?
redpoint73 said: Ahh, that's right, I think I did read somewhere, that the 1700/2100 MHz bands are used by T-Mob as download/upload. Not like ATT, where which of the 850,1900 MHz band is used for 3G depends on the geographic location/market. That means the OP is SOL on getting 3G on the Tilt2, right? He would need BOTH the 1700 and 2100 MHz bands on his phone? Click to expand... Click to collapse Exactly right. It's a hardware problem, not software as some people think. I seem to answer this question at least once a week here. lol The radio chip is different for each model of the Rhodium. That's one of the differences between the several versions. Japan uses 2100 MHz exclusively, standardized nationwide, as far as I know. Same with South Korea (although ATT lists that one carrier in S. Korea also uses CDMA 1800, not sure what the deal with that is). If the 2100 MHz band on the ATT Tilt 2 is just for download, wouldn't this mean that my phone would not be able to connect to the data network in Japan? Click to expand... Click to collapse It depends on what the network is set up as. 3G worldwide requires two bands to operate because of the bandwidth. GPRS and EDGE only require one. If this 2100 MHz frequency is one of the later, then it will work just fine. If this is a 3G band, then it is VERY likely to be paired with the 1900MHz frequency range. That's on GSM, anyway. I'm not 100% sure what CDMA frequencies are their.
[Q] Bad ESN's and frequencies in Australia
Hi guys, I've had a look around and can't really find much info on bad ESN's. Most of the questions are resolved with a -"find a carrier who will reflash your phone". The phone I'm looking at is from someone who didn't pay their phone bill. If I import this phone over to Australia - what will a bad ESN do? I'm planning to buy a pre paid SIM card over here, and I'd like to put a basic Gingerbread rom on it. I can see that a bad ESN means you wouldn't be able to use the phone on the network it was sold on, but if you unlock the phone doesn't that mean you can put on whatever carrier you'd like? Are there any issues with doing this? The next part of my question is about the Vibrant. From the info I've found this... Will My SGH-t959 (Vibrant) Phone Work In Other Countries And How Do I Unlock It? The SGH-t959 is a quad band dual mode handset. It supports GSM frequencies of 850, 900, 1800, & 1900. It supports UMTS 1700, 1900, and 2100 frequencies. There is a possibility the phone may be used with a wireless operator outside the United States however this is not guranteed. The phone has been optimized to work on the intended carrier it was designed for. Click to expand... Click to collapse From what wikipedia says on Vodafone (in Oz,) The GSM mobile service on 900 MHz and 1800 MHz covers 94.52% of the country. The 3G 2100 MHz UMTS network is available in metro areas of major cities and some larger regional centres covering 80% of the population. Expansion of the 3G UMTS network using 900 MHz to equal or surpass the GSM coverage is due to be completed by 31 August 2009 [1] [2]. Click to expand... Click to collapse Will this work here? It's seems like it should? (I'm in Melbourne) I'd like the 3g to work for the internet etc. Thanks guys.
Beumpp....
I can't guarantee it but technically according to the site below, it should work: http://www.phonearena.com/phones/Samsung-Vibrant_id4747 UMTS[3G] frequencies: 1700/2100, 2100 Optus, vodafone and three use 2100 and 900
Is the Optimus 4HD support 3G 850MHz?
Hi, In gsmarena it's written that it does support 3G 850MHz, but in a few stores (clove, handtec) its written that it doesn't support. Is it have several variants or the information on the stores is wrong? Thank you
On LG's product site for the phone (LG DE): Quadband (850/900/1800/1900 MHz) + UMTS (850/900/1900/2100 MHz) + HSPA+ 21Mbit/s
In LG UK it has HSPA+ 21 900/1900/2100 So maybe there are two variants.
Strange. The hardware must be the same, I'm in the UK but bought mine in from Germany as it hasn't been available. Works out cheaper anyway.
I'm not sure but i don't think 850 MHz is used in the UK or Europe, it might be a US frequency. On the UK LG website it says it's got 850 and 900 so it should work in the US and Europe. Unless there's 2 different versions of the phone it should be fine, obviously have the correct Sim card for the country your in otherwise you could get some hefty charges.
[Q] HTC One for use in South Korea
Hi looking to purchase the HTC ONE International Version M7 and want to use it in South Korea and wondering if it will work? Either 3g or 4g LTE Here is the bands for the International Version Band GSM/GPRS/EDGE 850/900/1800/1900 (Quadband) WCDMA (UMTS)/HSPA 850/900/1900/2100 And the bands available to be as im on SK Telecom 850mhz lte 1800mhz lte 2100 UMTS/HSPA I'm guessing that the 1800 and 2100 mhz bands overlap I should probably have both access to 3g and 4g lte? Thanks so much guys!
850Mhz is SKT's main frequency and 1800Mhz is their secondary frequency which is so-called 'multi-carrier.' Even if that multi-carrier frequency overlaps the HSDPA frequency in One's spec, SK Telecom's HSDPA signal only comes from 2100Mhz band, and you don't have to worry. However, I have to warn you - If you buy 801s model, you can use LTE in those 'multi-carrier' zones that are smaller than its main band area. Even if multi-carrier zone is being expanded, SKT's main band is the only band provided in majority of areas. Sent from my HTC One X+ using Tapatalk 4
Help with 3G over 2100Mhz
Hey, I need help running 3G over 2100Mhz frequency on unlocked Tmobile D415, Ive tried using both these codes to enable 3G over 2100 and its not working: 3845#8415# *#*#4636#*#* I read some where that T mobile offers a rom for europe and asia where 2100MHz for 3G is enabled, any help please?
I am pretty sure the T-Mobile variant does not support the 2100 MHz band used in Europe. The supported frequencies are only 850 MHz, AWS (1700/2100 MHz), and 1900 MHz. The 2100 MHz used for AWS 3G is not the same frequency range used for 2100 MHz in Europe. This phone was not designed with the international market in mind, considering it's cost. Here is a more detailed explanation: http://www.phonescoop.com/articles/article.php?a=99&p=1493 The FCC wanted to harmonize its "new" AWS spectrum with Europe's UMTS 2100 band, since both would be used for new "3G" phone service. Unfortunately, as you can see above, the lower half of Europe's UMTS 2100 band almost completely overlaps with our PCS band, so complete harmonization wasn't an option. However, given the circumstances, the FCC did do a pretty good job of harmonizing AWS with the rest of the world. The upper part does line up perfectly with Europe's UMTS 2100 band, and the lower part does line up with Europe's DCS band. Therefore manufacturers already building GSM+WCDMA "world phones" actually won't have to support any additional frequency bands at all. Click to expand... Click to collapse