Database Info

3G Frequencies

Is there a way to change the 3G Frequencies on the G1 to support AT&T 3G network?

Nope, thats a hardware issue.

I thought it was possibly a software issue. If not, is there a way to change out the chip or the incompatable part to make it compatible?

card13 said:
I thought it was possibly a software issue. If not, is there a way to change out the chip or the incompatable part to make it compatible?
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Click to collapse
Nope...not going to work for many reasons.

been answered plenty plenty of times.

From what I can figure a hardware change may not be required with the correct radio but we dont know the right radio without the right hardware. lol I know that makes no sense but it makes as much sense as anyone can make of it thus far. When its possible I assure you I will be among the first to do it. Although Im not ready to try installing a new radio without first acquiring a backup phone but if I do Im gonna give it a try and maybe have better luck than the last guy to try.

What about a mini-usb attachment that can receive atnt signals?
I am sure with that and the right software manipulation it could work.

sjbayer3 said:
What about a mini-usb attachment that can receive atnt signals?
I am sure with that and the right software manipulation it could work.
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While it sounds great in theory I doubt anyone would put forth the resources for such a limited market.
You would be best off getting android to work on existing AT&T hardware.

in order to do it we would need hardware which would plug in the bottom and software to tell the phone to use the signal from the attachment.
while there wouldnt be millions in the market i guarantee there are hundreds.
if anyone wants to think about it i dont mind making 50 of em and selling for cost. i have some hook ups in the engineering field i work in

ok, my question is... Europe 3g is diff than tmob usa 3g, but is tmob europe the same 3g setup as US? and if europe 3g is same as tmob europe 3g, is att US 3g same as europe 3g. so if tmob europe is same as europe 3g then a europe g1 should work on att US 3g. am i coming thru clear or am i jumping all over?
Shaggy

Shagman68 said:
ok, my question is... Europe 3g is diff than tmob usa 3g, but is tmob europe the same 3g setup as US? and if europe 3g is same as tmob europe 3g, is att US 3g same as europe 3g. so if tmob europe is same as europe 3g then a europe g1 should work on att US 3g. am i coming thru clear or am i jumping all over?
Shaggy
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The American G1 has 3G support for HSDPA 1700 MHz & 2100 MHz, both bands I believe are used by T-Mobile. In Europe I believe they use only 2100 MHz band for 3G.
AT&T on the other hand uses 850 and 1900 MHz HSDPA
The phone has the capability for 2G at 850 and 1900 MHz, so technically it can be used on their network, just not at 3G speeds.
Although technically it's possible to design a Phase-Locked Loop to operate at a variable frequency and to be tuned with jumpers or something, it's probably cheaper for them or they might be subsidized to make phones so that they are exclusive for one network in the US.
To me the ideal is more about standardizing the protocols and the frequencies used for all companies, and having all bands available for traffic. But at least in the short-term that's not really good for business and so probably won't happen for a while.
This is all based entirely on a limited amount of research and my opinion, take it for what it's worth.

Europe uses 1900/2100 in a pair (1900 is the uplink, 2100 is the downlink). (source)
Most phones produced these days are tri or quad band and can work (almost) anywhere.. I'm surprised the G1 isn't.

Shagman68 said:
ok, my question is... Europe 3g is diff than tmob usa 3g, but is tmob europe the same 3g setup as US? and if europe 3g is same as tmob europe 3g, is att US 3g same as europe 3g. so if tmob europe is same as europe 3g then a europe g1 should work on att US 3g. am i coming thru clear or am i jumping all over?
Shaggy
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Click to collapse
TonyHoyle said:
Europe uses 1900/2100 in a pair (1900 is the uplink, 2100 is the downlink). (source)
Most phones produced these days are tri or quad band and can work (almost) anywhere.. I'm surprised the G1 isn't.
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Click to collapse
*sigh*.
Folks, you need to learn about UMTS bands before complaining about that the G1 or any other phone can't do this or that when it certainly can.
The G1 is a 3g worldphone. It works on the US 1700 AWS network (UMTS Band IV) and works on the world's 2100 network (UMTS Band I). ATT uses the 1900 Band (UMTS Band II).
Apparently the common names for these networks is being confused with the actual operating frequencies because they don't upload and download on the same frequencies. The 1900 band is not the same as the 2100 band, even though the 2100 band (UMTS Band I) uploads in the 1900mhz frequency and downloads at the 2100mhz frequency range. The 1900 Band (UMTS Band II) uploads on the upper half of the 1800mhz and downloads on the 1900mhz frequency range. UMTS Band II uploads on the frequencies that UMTS Band I downloads.
These bands separate.
TMO 3g band is different from ATT 3g band which is also different from EU 3g band.
The 1700 band (UMTS band IV) is actually made up of 2 frequency ranges like the other bands I and II are: 1700mhz and 2100mhz. In fact, the 2100mhz download range for UMTS Band IV is within the same frequencies used for the Band I download range, theoretically making it cheaper/easier for manufacturers who make Band I phones to "support" UMTS Band IV phone production.
Most phones produced today are NOT "tri or quad-band" 3g phones. In fact, I have yet to find a quad-band 3g phone. If quad-band 3g phones were made, they would be very likely to support the T-Mobile 3g network, because it's the 4th largest UMTS band type (behind Band I, II, and V). I would be very shocked to find a phone which was 2100/1900/900/850 instead of 2100/1900/1700/850.
And the G1 is a worldphone. It works just fine on UMTS in Europe. It is a band I and band IV device.
read these 2 links:
http://www.htc.com/www/product/g1/specification.html
http://en.wikipedia.org/wiki/UMTS_frequency_bands#UMTS-FDD
So to clarify, when you see a list of support bands, this is what you should interpret from those advertised bands:
2100 Band = UMTS Band I (The entire world outside of North America)
1900 Band = UMTS Band II (The Americas, ATT)
1700 Band = UMTS Band IV (The Americas, TMO)
900 Band = UMTS Band VIII (Australia)
850 Band = UMTS Band V (The Americas, ATT)
Outside of North America, the 2100 band is almost universally deployed, even where the 850,900,1700 or 1900 band is deployed.

[Q] International Sensation?

So i just purchased from amazon and it says its the international version with no warranty will i have any problems running that on t-mobiles 3G? It says its unlocked and will it be any different from the USA version?

U better make sure they running the same 3g bands or u stuck with edge eww

Well on the site it said its running the same but thats why i want somebody to help me with this i can still cancel my order helpp =[

anybody? can help?

if it's the EU version it'll work. it seems all the sensations have tmous's AWS bands

xSunny said:
So i just purchased from amazon and it says its the international version with no warranty will i have any problems running that on t-mobiles 3G? It says its unlocked and will it be any different from the USA version?
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The supported cellular bands should be listed somewhere in the specs. (link?) Should look something like this.
Network technology:
GSM:
850, 900, 1800, 1900
UMTS:
900, 1700/2100, 2100
If you do not see the 1700/2100 bands in the specs., you will not get t-mobile's 4g data speeds. Only edge.

*Omnipresent* said:
The supported cellular bands should be listed somewhere in the specs. (link?) Should look something like this.
Network technology:
GSM:
850, 900, 1800, 1900
UMTS:
900, 1700/2100, 2100
If you do not see the 1700/2100 bands in the specs., you will not get t-mobile's 4g data speeds. Only edge.
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Click to collapse
It'll either say that or AWS. I think the EU boxes say AWS

Network
HSPA/WCDMA:
Europe/Asia/T-Mobile US: 900/AWS/2100 MHz Quad-band GSM/GPRS/EDGE: 850/900/1800/1900 MHz
That is from Euro version specs...
Sent from my HTC Desire using XDA Premium App

I have that phone and I'm getting at least 3g speeds. I have no idea how to check to see whether I get 4g. If anyone can guide me, I can post my results.
My speeds are not that good, but are the same as my old HTC HD2.
Its about 3Mbps/1Mbps.

4G would be either if your phone said 4G (US) or H+ (EU)

See the guy said for t-mobile its running 1700/2100 i know t-mobile uses 2100 idk if the 1900 is under edge and he just didnt list it cuz he only listed 3g/4g..

I was wondering this same exact thing! I'm also considering buying it from Amazon. I want to buy the international version instead of the Tmous version because hopefully Tmous will allow me to use my $10 web2go plan with the international sensation since my IMEI isn't tracked by Tmous. But at the same time I want to know if the international version with have the 1700/2100 Tmous 4G bands.
On the the HTC HD2, only the Tmous version had the 1700/2100 band whereas the International HD2 had 850/1900 bands. Just want to know if the Sensation is gonna be the same way.
Please update when your phone arrives.

I guess the International Version Sensation DOES HAVE the 1700(AWS)/2100 band. Here is a video of the unboxing of the international version: http://www.youtube.com/watch?v=HxqA4hNe42A
Now the only question remains is if it'll be able to use the $10 web2go plan

Also check out this review, it's confirmed international version works with Tmous 4G: http://pocketnow.com/android/htc-sensation-review
"CALL QUALITY/NETWORK SPEED
We tested the HTC Sensation over T-Mobile, even though this variant of the Sensation was designed for Europe. Despite this, call quality was fantastic with no dropped calls. We also clocked some pretty healthy data speeds of, on average, 3Mbps down and 1.5Mbps up. In our best test we clocked 6.1Mbps down and 1.7Mbps up."

I am using the sensation on tmobile. It only says H for data. I am not sure if the software can support changing the display. The HTC hd2 I previously used was the tmo version, but I don't think that can support 4G. Is there any barrier that one can say they're on 4G? Like of your speed is above XMbps, then you're on 4G.

I got an international one today(black box). I got worried that I wouldnt get 4g (didnt have UK or USA english only asian countries) The box says:
HSPA/WCDMA (900/AWS/2100 MHz)
GSM/GPRS/Edge (850/900/1800/1900 MHz)
So these are the correct bands for TMO 4g correct? I see I get the H icon on the signal meter but when I did a speed test I got really low scores (could have been the area I was in at the time though) The place I bought it from said I could exchange it for a TMO branded one because I called them and said I didnt think it was compatible with tmo's 4g network. But before I go and exchange it I want to make sure if it doesn or doesnt have the TMO bands

graffixnyc said:
HSPA/WCDMA (900/AWS/2100 MHz)
GSM/GPRS/Edge (850/900/1800/1900 MHz)
Click to expand...
Click to collapse
Bold part is all you need to worry about for tmous 3G/HSPA+

xnifex said:
Bold part is all you need to worry about for tmous 3G/HSPA+
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So then it's fine for Tmo's 4g.. Thank god.. lol I would hate to have this beast and only get 2G speeds.

graffixnyc said:
So then it's fine for Tmo's 4g.. Thank god.. lol I would hate to have this beast and only get 2G speeds.
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The H symbol is for HSPDA+ (3.5G). Make sure you see the 4G symbol to verify it does get 4G.

raysacr said:
The H symbol is for HSPDA+ (3.5G). Make sure you see the 4G symbol to verify it does get 4G.
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Click to collapse
Tmo's "4G" network is only hspda+ at least as far as I know. I think the tmo version and the version I have just have different icons for when on the 4G network. Tmo's version says 4G and the Asian version shows the H

Using MT4GS outside US

Hi everyone.. I'm planning to get this device and use it outside the US (mainly China and Indonesia).
Will the 3G work in those 2 countries? From the specs sheet, I understand that MT4GS support UMTS 2100. So theoretically, there should be no problem, since China and Indonesia use UMTS 2100 band, but it would be better if someone with personal experience can confirm this.
Anyone here has any experience using MT4GS outside the US?

yep. I am. In the Netherlands. Don't know what band i am though. And i had to unlock the device before i could use it.

I'm in Canada, working fine on the regular GSM bands but I only get 2G speeds when using data...thinking about switching to a UMTS provider.

nldroid said:
yep. I am. In the Netherlands. Don't know what band i am though. And i had to unlock the device before i could use it.
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Click to collapse
so just to be clear.. your handset has no problem using 3G connection right? as far as i know, the netherlands also use UMTS 2100 band
mat_oli said:
I'm in Canada, working fine on the regular GSM bands but I only get 2G speeds when using data...thinking about switching to a UMTS provider.
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Click to collapse
why do you only get 2G when using data? is it due to the provider or the handset?

forzanetti said:
so just to be clear.. your handset has no problem using 3G connection right? as far as i know, the netherlands also use UMTS 2100 band
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Yep i don't have any problems using the 3G connection. Just needed to find the right APN settings.
And according this site (and a couple of others):
http://www.worldtimezone.com/gsm.html
It's indeed the 2100 band.

nldroid said:
Yep i don't have any problems using the 3G connection. Just needed to find the right APN settings.
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Click to collapse
Great!! one less thing to worry then so I think there isn't any limitations if this device is used outside the US, as long as the UMTS band is correct.
Thanks a lot!

forzanetti said:
so just to be clear.. your handset has no problem using 3G connection right? as far as i know, the netherlands also use UMTS 2100 band
why do you only get 2G when using data? is it due to the provider or the handset?
Click to expand...
Click to collapse
It's due to the provider, they don't operate on the 2100 band, so I can only use their 2G network.

mat_oli said:
It's due to the provider, they don't operate on the 2100 band, so I can only use their 2G network.
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Click to collapse
Thanks for the info!! Now I feel more encouraged to get this device

I found this in the review section of this phone in phonearena :
Global travelers will like the handset very much since it can be used just about anywhere around the world for phone calls, but 3G and 4G data speeds can only be experience domestically through T-Mobile’s AWS band. However, you can still achieve 2G EDGE speeds with other network carriers.
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now I'm confused again

2G it is GSM that can be used anyware in the world that supports GSM however 3G on different carriers uses different bands and different technology, Tmob uses a AWS* some carriers use this for there 3G.... Check if your carrier uses AWS for its 3G.
I know that Canada has WIND and Mobilicity that use AWS 1.7/2.1 for there 3G,.... that said I don't know about other countrys...
* About AWS in the USA
In September 2006, the Federal Communications Commission (FCC) auctioned licenses in the first Advanced Wireless Services band. This band was an area of wireless spectrum, half in the 1700 MHz (1.7 GHz) and half in the 2100 MHz (2.1 GHz) frequencies, that was already in use by government services. The spectrum was planned to become available after the government users migrated to different frequencies.

Mistix said:
2G it is GSM that can be used anyware in the world that supports GSM however 3G on different carriers uses different bands and different technology, Tmob uses a AWS* some carriers use this for there 3G.... Check if your carrier uses AWS for its 3G.
I know that Canada has WIND and Mobilicity that use AWS 1.7/2.1 for there 3G,.... that said I don't know about other countrys...
* About AWS in the USA
In September 2006, the Federal Communications Commission (FCC) auctioned licenses in the first Advanced Wireless Services band. This band was an area of wireless spectrum, half in the 1700 MHz (1.7 GHz) and half in the 2100 MHz (2.1 GHz) frequencies, that was already in use by government services. The spectrum was planned to become available after the government users migrated to different frequencies.
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Click to collapse
Hi Mistix.. thanks for your reply
Yes I'm aware about the AWS which uses the 1700/2100 band for their 3G and 4G, but according to phonearena, MT4GS supports the following band :
UMTS: 1700/2100, 2100
Click to expand...
Click to collapse
which means besides supporting AWS (1700/2100), it also supports the "regular" 2100 UMTS band. The information could be wrong though..
but nldroid has stated that he has no problem using 3G in the Netherlands. And the last time I checked, the Netherlands still use the "regular" 2100 UMTS band (AWS is only available in the states and Canada).

Maybe they mean that if you're T-Mobile USA customer you can only use 2G outside the US with roaming.
I'm definitly on 3G. (it actually says 4G sometimes: http://attachments.xda-developers.com/attachment.php?attachmentid=689448&d=1313411454)

nldroid said:
Maybe they mean that if you're T-Mobile USA customer you can only use 2G outside the US with roaming.
I'm definitly on 3G. (it actually says 4G sometimes: http://attachments.xda-developers.com/attachment.php?attachmentid=689448&d=1313411454)
Click to expand...
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Thanks for the pic! Looking forward to get my hand on this baby next month

[Q] [Noob question] Frequency bands

I work for Tmous retail sales and we have never really been taught anything about bands. Ive been pretty curious myself since some customers come into the store with AT&t phones asking about tmo service. I have been instructed (by a fellow retail associate) to tell them that no At&t phone will ever have 3G on tmo ( I assume thats just the safe answer though).
real question!
in terms of 3G/4G (hspa+) what bands does tmous use?
same question for AT&t.
To tie that together. ex: If a phone from At&t hypothetically has capabilities to use the same bands as tmous and is unlocked, can it get 3G/4G service on tmous?
i did search around and didnt find a very clear answer so i figured i'd start a thread, im sure other noobs have the same question.

T-Mobile uses 1700 2100 MHz bands for 3G/"4G"
AT&T uses 850 and 1900 MHz bands for 3G/"4G"
Yes if a phone has all those bands for 3G, and it's SIM unlocked you can get 3G on other cell company.
The T-Mobile Vibrant actually has those AT&T bands too, if you SIM unlock the Vibrant, you can get 3G on AT&T.
http://www.androidguys.com/2010/08/22/samsung-galaxy-unlockable-tmobile-vibrant-supports-att-3g/
It's very rare to see a phone that supports both T-Mobile and AT&T 3G bands.

nxt said:
T-Mobile uses 1700 2100 MHz bands for 3G/"4G"
AT&T uses 850 and 1900 MHz bands for 3G/"4G"
Yes if a phone has all those bands for 3G, and it's SIM unlocked you can get 3G on other cell company.
It's very rare to see a phone that supports both T-Mobile and AT&T 3G bands.
Click to expand...
Click to collapse
Thanks for the clarification. In hopes that im not being a further nuisance, I was wondering, what about a phone that has 1 of the matching bands?
T-Mobile USA is using the 1700/2100 Mhz bands for 3G (UMTS)
T-Mobile Germany uses 1900/2100 Mhz for 3G (UMTS)
If you couldnt tell, im considering buying an iPhone (to develop on for fun). Will a phone that uses 2100 Mhz only be usable on USA towers (for 3G service)?

DrewMullen said:
Will a phone that uses 2100 Mhz only be usable on USA towers (for 3G service)?
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No it will not get 3G

is HTC One S exclusive T-mobie?

After looking many phones, I like One S. but seems it's exclusive for T-mobile?
because the 3g band of T-mobile is differente of my country I would like to know if there is a One S which is not for T-mobile. I need 1900mhz support
thanks

kossel said:
After looking many phones, I like One S. but seems it's exclusive for T-mobile?
because the 3g band of T-mobile is differente of my country I would like to know if there is a One S which is not for T-mobile. I need 1900mhz support
thanks
Click to expand...
Click to collapse
Yeah there is. There a lot of site that sell International HTC One S. Of course, its full price.
http://www.amazon.com/HTC-Z520E-VILLE-COLOUR-UNLOCKED/dp/tech-data/B007H7G6IE/ref=de_a_smtd

kossel said:
After looking many phones, I like One S. but seems it's exclusive for T-mobile?
because the 3g band of T-mobile is differente of my country I would like to know if there is a One S which is not for T-mobile. I need 1900mhz support
thanks
Click to expand...
Click to collapse
Where do you live?
The One S is exclusive to T-Mobile only in the USA afaik. The international variant (PJ40100) supports WCDMA at 850, 900 and 2100 MHz. T-Mobile USA variant (PJ40110) supports WCDMA at 850, 1700, 1900 and 2100 MHz but (My speculation here!) I guess if your carrier has a 1900 network they might sell the PJ40110 variant without the branding, isnt this what some canadian carriers do btw?
Some details here

frdd said:
Where do you live?
The One S is exclusive to T-Mobile only in the USA afaik. The international variant (PJ40100) supports WCDMA at 850, 900 and 2100 MHz. T-Mobile USA variant (PJ40110) supports WCDMA at 850, 1700, 1900 and 2100 MHz but (My speculation here!) I guess if your carrier has a 1900 network they might sell the PJ40110 variant without the branding, isnt this what some canadian carriers do btw?
Some details here
Click to expand...
Click to collapse
I live in Mexico, as far as I know 3G band here is 850mhz/1900mhz. I think it's the same with AT&T (because most at&t phones works here). I'm sure 1700/2100 won't work (because once I have droid Incredible 2, never got 3g works)
I don't like One X because it's too big. so any chance HTC One S will work here? (either T-mobile or international)

kossel said:
I live in Mexico, as far as I know 3G band here is 850mhz/1900mhz. I think it's the same with AT&T (because most at&t phones works here). I'm sure 1700/2100 won't work (because once I have droid Incredible 2, never got 3g works)
I don't like One X because it's too big. so any chance HTC One S will work here? (either T-mobile or international)
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Click to collapse
I have T-Mobile USA HTC One S with me and on the box it says that it supports 3g of 850, 2100, 1700/2100 and 1900Mhz. I just don't have AT&T sim card to test, but looking at the specs on the box it has to work at 1900Mhz.

I've read that it picks up 4G on at&t just not LTE.
T-MobileUS HTC One S running Stock Rooted 2.21.