Database Develop

[Q] Change Galaxy S modem to US Frequencies?

No, you'll need to go with a carrier like T-Mobile who support the same frequencies as the international version (I assume, I haven't checked them recently).

T-Mobile has a 2100 MHz band but it's paired with 1700 MHz for AWS so I'm not sure if that would actually work.
The 1900 MHz band would get reception from AT&T, although only in areas where they're using 1900, probably in the city.
That's just for 3G though. If you don't need 3G then T-Mobile and AT&T are both GSM carriers.

you will have 2g coverage with at&t and tmobile, and some 3g with at&t, when you have wcdma 1900 coverage... that's about it

I suck at knowing these radios. But, if you are visiting friends, what you can try to do is borrow their sims from different carriers for 5 minutes and see what works in the area(s) you visit. Just an out of the box thought.

AT&T is using 850/1900MHz 3G/UMTS bands (if i'm not mistaken),
i9000 international version supports 3G/UMTS 900/1900/2100 MHz, 850MHz not included.
so I think you are not able to use the 3G network, but the GSM should be working find although it's much slower.

Yup
That's why us USA folks have to wait for either a USA or Australian Variant of the device.

Thanks a lot for all your replies! I was hoping Samsung would be lazy and build the same radio in all of it's devices. Guess I was wrong. Still, thanks a lot, I'll see how well it works with 2G.

Is there still no way to change the UMTS band on European Galaxies so they work in the US?

Nope. You would have to hardware mod the phone.

They already do on 1900 att and thats that
quaker5567 said:
Is there still no way to change the UMTS band on European Galaxies so they work in the US?
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Sent from my i9000M

I know this is an old thread, but I was looking for information about what modems are for what phones and came across it and thought that as an AT&T customer, I should clarify some information.
Most of AT&T 3G network uses 1900 MHz. AT&T is also "overlaying" 850 MHz over their existing 1900 MHz to increase capacity. There may be some 850 MHz only locations, but I am not aware of any. For the most part, if your phone supports UMTS1900, you should be able to get 3G anywhere that AT&T's map shows 3G availability.

nkrick said:
I know this is an old thread, but I was looking for information about what modems are for what phones and came across it and thought that as an AT&T customer, I should clarify some information.
Most of AT&T 3G network uses 1900 MHz. AT&T is also "overlaying" 850 MHz over their existing 1900 MHz to increase capacity. There may be some 850 MHz only locations, but I am not aware of any. For the most part, if your phone supports UMTS1900, you should be able to get 3G anywhere that AT&T's map shows 3G availability.
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if you bought a i9000m from canada. you can use UGKC1 or UGJL2 modem to enable 850
im currently on at&t using i9000m with ZSJPG modem with 850mhz enabled

Just 1900Mhz isn't all that great, kinda slow and spotty. Don't get me wrong, it's usable, but 850 is significantly faster/better at least where I live.
I have an I9000M but occasionally use a modem without 850, and it's not as good.
While there are roundabout ways to get 850 on other modems, I usually use one of the Bell ones like JL2 or KC1.

I am using jl2. kc1 did not work reliably with my microcell and would instead keep trying to pull in weak signal thus sucking battery. As for 850mhz only.. most of the I93 corridor on new England is 850mhz only.
Sent from my GT-I9000 using Tapatalk

Frostshock said:
T-Mobile has a 2100 MHz band but it's paired with 1700 MHz for AWS so I'm not sure if that would actually work.
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It's not paired. It's a single band that uses 1700 MHz for upload and 2100 MHz for download. Just like the international 2100 Mhz band uses 2100 MHz for download and 1900 MHz for upload.
http://en.wikipedia.org/wiki/UMTS_frequency_bands

So just to clarify, my stock i9000m, running 2.3.3 and UGKG3 will get 3G in southern California on both the 850 and 1900 bands? UGKG3 can use both bands?
Sent from my GT-I9000M using xda premium

[Q] help me choose please!

Should I buy a captivate or a i9000 galaxy s?
It is for the use in the netherlands but I heard the captivate had some more specs..
Thanks in advance!

Galaxy S and captivate are pretty similar.
i9000 has front camera (if you use it), physical back button, better support (more users) and you are more likely to have warranty support in the Netherlands.
i897 IMHO looks better and is heavier (feels more expensive). Also it comes in 16gb (i9000 comes in 8gb/16gb) and has lots of AT&T crapware on it....easy enough to remove...but you have to do it
Take the one you like the looks of better.

I really like the looks of the captivate but I am worried that it's going to have 3g network problems here..
If I would import the phone, would it work perfect with the signal here to?

snaai8 said:
I really like the looks of the captivate but I am worried that it's going to have 3g network problems here..
If I would import the phone, would it work perfect with the signal here to?
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The issue will be the 900 band will be missing in the Captivate which is where a lot of carriers have 3G in Europe. In the US, it will work fine. i9000x 3G won't work in 850Mhz markets.
Captivate runs on the following data bands:
3G (850/1900/2100 MHz) <-AT&T works fine.
Galaxy i9000x runs on:
2G - GSM 850/900/1800/1900
3G - HSDPA 900/1900/2100 <- Missing 850 for AT&T
Vibrant
3G - HSDPA 1700/2100
If you seriously want a world phone for data, there is only one in the market at the moment that I'm aware of. It's the Sony Xperia X10a. It's a dual mode phone and uses GSM/GPRS/EDGE 850/900/1800/1900 and UMTS/HSPA 800/850/1900/2100.

I'm a complete dummy in this subject so here comes the stupid questions..
What would happen if I tried using it in my country?
I'm using a omnia 2 now with:
2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 900 / 1900 / 2100
So if I tried using the captivate, would my 3g be gone?
EDIT:
I was looking through the specs at the AT&T site and it said:
GSM/GPRS 850/900/1800/1900 MHz
3G UMTS/HSDPA (850/900/1900/2100 MHz)
So according to these specs it says that it also has a 900mhz frequention.
EDIT2: Vodafone in my area (my carrier) uses 2100 as 3g band and gsm 900/1800.
I foung this info using gsmworld

can someone please explain it to me?
Ik need to choose before friday!

[Q] radio frequency

Hey guys, gals and guru's
Have had a bit of a search around and can't find any definitive answers.
Basically, I'm in Australia and wondering if you can flash a radio or something that would allow you to use the nextg network?
I'm currently on optus (3g) and looking to switch to telstra nextg for better coverage and want to know if I can do anything to my inc s to enable the switch or do i need a nextg compatible phone? Is it just software/firmware related or different hardware in the compatible phones?
Thanks in advance

You would be looking at hardware radios.
The optus incredible s will not work on telstra 3g properly. It operates mostly on the 850mhz band which our phone does not support.

change bands 3g
so there is no way to change the bands, I mean going from (HSDPA 900 / 2100 or HSDPA 900 / 1700 / 2100) to (HSDPA 850 / 1900 / 2100 - North America) ???

zndreti22 said:
so there is no way to change the bands, I mean going from (HSDPA 900 / 2100 or HSDPA 900 / 1700 / 2100) to (HSDPA 850 / 1900 / 2100 - North America) ???
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Yep the radio frequencies are fixed in the chipset and cannot be altered with ROM or radio update.

European i9000 to work with 3G in Canada??

Yo folks. I am finally flying back to Toronto tomorrow after having been here in Italy for the past 4 years, and I am so pumped up ...
Anyways, I have got an Italian Samsung Galaxy S i9000 with 1900/2100 UMTS bands and the current baseband firmware is I9000XXJVU.
I was wondering if by flashing a Canadian baseband version my SGS perhaps would might give me 3G with Telus or Fido in Canada.
Is that something that could be done via sw or is rather something hardware involved??
Thanks

Do not flash a canadian baseband. There is no way to enable the 850 MHz band in your hardware.
However, in Toronto you will be able to get by by using only the 1900 MHz band. 850 MHz is mostly usefull for rural areas and/or basements.
So to answer your question, yes, it will work.
With Rogers/Fido, you will fall back to EDGE if you are out of the 1900 MHz UMTS coverage.
With Telus/Bell you fill loose signal if you are out of the 1900 MHz UMTS coverage.

zorxd said:
Do not flash a canadian baseband. There is no way to enable the 850 MHz band in your hardware.
However, in Toronto you will be able to get by by using only the 1900 MHz band. 850 MHz is mostly usefull for rural areas and/or basements.
So to answer your question, yes, it will work.
With Rogers/Fido, you will fall back to EDGE if you are out of the 1900 MHz UMTS coverage.
With Telus/Bell you fill loose signal if you are out of the 1900 MHz UMTS coverage.
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Cool mate.. didn't know some Canadians mobile ISP uses 1900mhz band for 3G.. I am going to get a find number today ..
Thanks

Help on I9305 LTE BAND Support

Currently I have i9305 and LTE micro sim, the telco LTE band is Band 1 (2100) and it seem that the i9305 does not support it. According to samsung and also gsmarena specs, it support only 1800/2600 LTE bands. I know that the chipset us is Qualcom MDM9215 and it supports 2100 LTE band also based on http://www.4gltemall.com/am-telecom-aml500-4g-lte-module.html where they are selling the product. Is there a flashable modem file for odin to enable this?

Network GSM 850 / 900 / 1800 / 1900 3G Network HSDPA 850 / 900 / 2100
4G Network LTE 800 / 1800 / 2600
Modems are in the modem thread

JJEgan said:
Network GSM 850 / 900 / 1800 / 1900 3G Network HSDPA 850 / 900 / 2100
4G Network LTE 800 / 1800 / 2600
Modems are in the modem thread
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Thanks, but I am well aware of the bands, my question is just how to enable the LTE BAND 2100 whic is currently widely implemented by Smart Communications and not the 1800 and 850 bands. Since on paper i9305 supports LTE Band 3/7/8/20, MDM9215 also supports Band 1 which is the LTE 2100. Modems thread does not include what LTE bands are supported and have to go to wikipedia to research it based on country.

adasys said:
Thanks, but I am well aware of the bands, my question is just how to enable the LTE BAND 2100 whic is currently widely implemented by Smart Communications and not the 1800 and 850 bands. Since on paper i9305 supports LTE Band 3/7/8/20, MDM9215 also supports Band 1 which is the LTE 2100. Modems thread does not include what LTE bands are supported and have to go to wikipedia to research it based on country.
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No idea its not a question asked .
Suggest you contact your vendor/ network .

if the chip support 2100,i'm sure samsung will wirte it on the instructions
the only reson maybe the chip differs in the supporting band even for the same chip