Database Users

US vs. UK Dream - Hardware difference?

Does anyone know if the hardware is different from the US G1 to the UK G1? I know the US model uses the 1700 and 2100 bands for 3G, while the UK model uses 2100 only. Is this due to a physically different radio chipset, or is it strictly a ROM change? Could one flash a US ROM onto a UK G1; and would it work on 3G in the US?
Thanks in advance!

BAMF said:
Does anyone know if the hardware is different from the US G1 to the UK G1? I know the US model uses the 1700 and 2100 bands for 3G, while the UK model uses 2100 only. Is this due to a physically different radio chipset, or is it strictly a ROM change? Could one flash a US ROM onto a UK G1; and would it work on 3G in the US?
Thanks in advance!
Click to expand...
Click to collapse
I'd expect the 3g radio/chipset would be the same in them. If you take your UK G1 to the US I would imagine it would work on the US 3g network fine.

Dirky said:
I'd expect the 3g radio/chipset would be the same in them. If you take your UK G1 to the US I would imagine it would work on the US 3g network fine.
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Click to collapse
There is a hardware difference, extra antenna/amp chip. The T-mobile network in the US uses both 1700 and 2100 bands to establish the 3G voice/data connection. You'll be able to get 2g for sure, but not 3g. T-mobile uses 1700 band for up and 2100 for down stream.

niftydl said:
There is a hardware difference, extra antenna/amp chip.
Click to expand...
Click to collapse
Do you have a pic of the motherboard or some other evidence of this?
The T-mobile network in the US uses both 1700 and 2100 bands to establish the 3G voice/data connection. You'll be able to get 2g for sure, but not 3g. T-mobile uses 1700 band for up and 2100 for down stream.
Click to expand...
Click to collapse
I think when the op said the Dream uses 1700 and 2100, he meant UMTS Bands IV and I respectively. The Dream communicates with T-Mobile USA using only Band IV, which is commonly known as UMTS 1700, even though it does use 2110-2155Mhz for the downlink. More info here.

All the USA T-Mobile APNs are installed on the UK version, are there any 1700 ones listed?
I deleted them all or I'd check myself.

I have both the US and UK versions of the G1 in hand. I have looked at the list of US APNs, but I'm not really sure what to look for. They all specify epc.tmobile.com, but beyond that the numbers don't mean anything to me. Can someone tell me what to look for?
As far as the radio chipset, I have the service manual and I'm willing to disassemble the UK G1, just not sure what to look for. I'll be glad to take pictures along the way.
Externally, I have found a few differences in what's printed under the battery-
US model: DREA100
UK model: DREA110
US P/N: 99HEW038-00
UK P/N: 99HEW042-00
Of course, the difference in numbers could lie in the firmware.
Thanks everyone for the input thus far, any other advice you can offer is also appreciated!

BAMF said:
I have both the US and UK versions of the G1 in hand. I have looked at the list of US APNs, but I'm not really sure what to look for. They all specify epc.tmobile.com, but beyond that the numbers don't mean anything to me. Can someone tell me what to look for?
As far as the radio chipset, I have the service manual and I'm willing to disassemble the UK G1, just not sure what to look for. I'll be glad to take pictures along the way.
Externally, I have found a few differences in what's printed under the battery-
US model: DREA100
UK model: DREA110
US P/N: 99HEW038-00
UK P/N: 99HEW042-00
Of course, the difference in numbers could lie in the firmware.
Thanks everyone for the input thus far, any other advice you can offer is also appreciated!
Click to expand...
Click to collapse
Could you share the service manual if it is alright?

[Q] cross flash to get 10a 3g frequencies

I have 10i, but would love to switch to a provider that uses 10a frequencies. If I cross flash will the radio switch the frequencies?
It might sound like a stupid questions but my other phone is a Motorola Dext (aka Cliq) The 3G radio chipset in the Dext is multi-band, original radio firmware allowed the use of all the bands i.e 850/900/1700/1900/2100. Software updates later killed that option and allowed the phones to use 3 of the possible bands; decided by the telecom pushing the update. (Yes, I did update before finding this out -arse) BTW, if you feel bad about 1.6, Cliq/Dext sold in 2010 is stuck on 1.5, although at least there are (more or less buggy) custom 2.1 roms out now.
Apparently it's a common practice to use multiband radio and use firmware to lock it down, it is cheaper than manufacturing two distinct chips. But, common, does not mean universal.
Soooooo... Anyone knows if the radios are identical and we can cross flash to change our 3G frequencies; or are 10a and 10i using different, hardware locked, chips?

Try to use R2BA026 LAM firmware.
Is for X10a.
After that, you have to recreate the APNs.
It might work... but depends what frequency is supported by your carrier.
If is one from your X10i, it will work for sure. If not ... probably EDGE is your only choice because afaik X10 has only 3 bands for 3G

I want to go from Vodafone 900/2100 to TelecomXT 850/1900. XT has NO GSM network, it's all 3G and has superior data rates and speed. In NZ, because of large distances between towers outside the CBDs of the main centres, the first (lower) frequency is more important. Voda falls back on its gsm network and their 900MHz 3g coverage is not as good as telecom's 850 coverage. What I'm trying to establish is if the 3 frequencies are rom or hardware tied.
TelecomXT has a better network and far better prepay deals on data and sms, I used it with my 3g iphone and would love to go back to the fold.
I really don't want to brick this phone. So I've been trying to read up on how easy it is to flip back and forth with 10a/i roms. Or, flash 10i rom with a baseband? I'll try to flash in the weekend unless I get warned off,

i believe it will not work that way...x10i and x10a use two different 3g radio antenna chipset. so it will stay the same even though u have flashed to x10a firmware...
==
Sent from my Xperia X10i via XDA apps

njfpolyr6 said:
i believe it will not work that way...x10i and x10a use two different 3g radio antenna chipset. so it will stay the same even though u have flashed to x10a firmware...
==
Sent from my Xperia X10i via XDA apps
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Click to collapse
I agree. its not a software issue... its hardware... and unless you're apple, you can't get away with a software 'fix' to a hardware issue

An item you are forgetting about is each band has a power amplifier tuned specifically for that band. So even if the chipset supports 5 bands, it will only work on the bands for which it has power amplifiers for.
Sent from my SAMSUNG-SGH-I897 using XDA App

3G Network
X10i: HSDPA 900 / 1700 / 2100
X10a: HSDPA 850 / 1900 / 2100
So, you are out of luck.
You have to trade your X10i for an X10a

Galaxy S i9000 in United States

I have a European version Galaxy S i9000 that I am using in the US on AT&T. I have flashed JM5 firmware and then HACKECLAIR. I have been noticing that I don't get very good 3G reception. Occasionally it will say '3G', but most of the time it switches between 'H' and 'E'. Is anyone else using a SGS on AT&T in the US seeing this? Is it possible to flash a better radio?
Thanks for any comments.

H is quicker than 3G, I think it stands for HSPDA

Listed slowest to fastest
E = EDGE
3G = 3G
H = HSPDA
so if you're mostly getting H you're not doing to badly.

isn't 3G "UMTS"?
and like enigmameusa said, it's HSDPA, not HSPDA

you can not flash better radio
SGS is hardware radio, not software
if you have a Euro/Asia version then you are running 900/1900/2100 for 3G and HSPDA
if you have the American / Canadian models then you have 850/1900/2100 for 3G and HSPDA

hobbes487 said:
I have a European version Galaxy S i9000 that I am using in the US on AT&T. I have flashed JM5 firmware and then HACKECLAIR. I have been noticing that I don't get very good 3G reception. Occasionally it will say '3G', but most of the time it switches between 'H' and 'E'. Is anyone else using a SGS on AT&T in the US seeing this? Is it possible to flash a better radio?
Thanks for any comments.
Click to expand...
Click to collapse
The AT&T 3G band is 850. European model does not have this band as mentioned.​

tkalli said:
The AT&T 3G band is 850. European model does not have this band as mentioned.​
Click to expand...
Click to collapse
AT&T also uses 1900 for 3G.
The OP is just in an area with more 850 and 1900 3G coverage. You would fare better selling the European one and picking up an unlocked Vibrant which is identical to your model from Canada or getting the Captivate from AT&T.

Beware the captivate has 3g upload speeds locked as in u will only get up to around 300 k upload speed
Sent from my GT-I9000 using XDA App

Great, so even 3G has different standards in different country?
Why is it so difficult to have a common standard around the globe? This is why we can't have nice things...

snapper.fishes said:
Great, so even 3G has different standards in different country?
Why is it so difficult to have a common standard around the globe? This is why we can't have nice things...
Click to expand...
Click to collapse
The standard is the same globally, it's the frequency in which it operates that veries. It's due to spectrum that may be used in Europe being used for other services here. It goes back to a time before there were mobile phones.
Even in the US, T-Mobile and AT&T operate at different frequencies for 3G.

decepticon said:
AT&T also uses 1900 for 3G.
The OP is just in an area with more 850 and 1900 3G coverage. You would fare better selling the European one and picking up an unlocked Vibrant which is identical to your model from Canada or getting the Captivate from AT&T.
Click to expand...
Click to collapse
The Vibrant is not identical to the Canadian one, I really wish Bell hadn't insisted on calling theirs the "Galaxy S Vibrant" as this creates unnecessary confusion as it is very different from the T-Mobile vibrant. The Canadian Model is essentially the Euro one but with 850/1900/2100 3g instead of 900/1900/2100. The T-Mobile Vibrant uses 1700/2100, has a different button configuration and lacks a front facing cam.
You would really be best buying a captivate from AT&T since you are with them lol, unless you really really want the Canadian design and front facing cam, in which cause you'd have to buy a Bell one and unlock it.

USA AT&T Galaxy Tab questions answered here

I created this thread because there seems to be some confusion as to the differences between the T-Mobile, Euro, and (soon to arrive) AT&T branded versions of the Galaxy Tab. I'm sure at some point enough information will exist for a proper XDA wiki entry, but for now, we need a thread for each variant with specs, and where possible, hack/flash options, including phone and data connections.
So this will be the US AT&T thread, where we can get the facts straight for those who wish to use AT&T as their carrier with a Galaxy Tab.
THIS THREAD IS FOR US AT&T GSM ONLY, DISCUSSIONS ABOUT CDMA (SPRINT, VERIZON, ETC) SHOULD BE IN ANOTHER THREAD!
Other carrier-specific threads:
US Tmobile Galaxy Tab flashed to make phone calls (currently phone works only, no 3G data)
(I would suggest to moderators that other non-AT&T and CDMA-related posts be removed or moved to a more appropriate thread.)
Alright, for starters, let me post the US AT&T frequency information, so that n00bs can be up to speed.
850 MHz GSM/GPRS/EDGE 2G
1900 MHz GSM/GPRS/EDGE 2G
850 MHz UMTS/WCDMA/HSPA 3G
1900 MHz UMTS/WCDMA/HSPA 3G
This should be helpful when we discuss the Galaxy Tab specs. I will be re-editing this post as new information comes in.
[future verified information can be placed here]

[reserved for FAQ]

[reserved for links as needed]

Actually, the SGH-I987 version that AT&T is getting has already launched. In Canada. On two carriers.
The Bell version has two model numbers on the back, the GT-P1000M (firmware is different, and presumably less crippled than what AT&T will release, hello sideloading), and the FCC model number of SGH-I987 on the back cover, so the internals are identical to the AT&T unit.
And you missed a few bands, any Galaxy Tab with a SIM card will work on 2100 UMTS as well as 900 and 2100 GSM/GPRS/EDGE.

AT&T should be releasing their branded version of the Galaxy Tab on the 21st (just a few days from this posting). If I understand right (this is where the value of this thread will come into play), the specs for the T-Mobile version are different in terms of the 3G radio frequencies.
IF this is true, then it would mean that if you plan to use AT&T as your US carrier:
You must run an AT&T branded Galaxy Tab
You must run a Euro-spec Galaxy Tab*
*specific procedure for this to work is unverified at this time
Price
At this time, the price for an AT&T branded Galaxy Tab will be $650 from AT&T. It will have two pay as you go plans--$14.99 for 30 days and up to 250MB of storage or $25 for 30 days of up to 2GB. This is similar to how they currently handle the iPad plans.
HOWEVER, as many people here on XDA-devs know, it has always been possible to take a GSM SIM and move from phone to phone, and provided that the frequencies are compatible, the services should carry over and the device change remains largely in the control of the owner. Of course, they can detect the IMEI at the carrier, but in most cases they are not blocking IMEI's. If your device has the right radios and frequencies, it should work. In the past, this has been the case with most devices.
So the question is: Does the Euro-spec Galaxy Tab have the same frequencies as the AT&T branded Galaxy Tab? It should, considering that the specs for the Euro version seem to reflect the same frequencies that AT&T uses.
In theory, getting the software right on the Euro-spec Galaxy Tab should be a matter of flashing a working cooked ROM to enable phone and 3G connectivity.
As of the time of this post, one or two people have managed to get a Galaxy Tab phone service working with AT&T, although I am unsure about 3G.
Again, the purpose of this thread is to clear up these questions, and keep it focused on getting a fully-functional Galaxy Tab on the AT&T carrier. Meaning both phone and 3G working as normal with any other device.

I can confirm that the European Tab works fine on at&t with full 3G and Voice dialing.
It is model GT-P1000
FCC ID: A3LGTP1000
I have been using it for the past few weeks and it seems to support all the required frequencies. It has operated in every mode including (G)PRS, (E)DGE, (3G) and (H)SPA

Stupid question then. Doesn't Canadian Rogers use the same frequencies as AT&T?
They sell Galaxy Tab too right? Does their Galaxy Tab have voice call capability?
I am interested in buying Galaxy Tab that could do 3G on AT&T and can make voice calls so I could use it as my phone ;-)

Technomancer said:
Stupid question then. Doesn't Canadian Rogers use the same frequencies as AT&T?
They sell Galaxy Tab too right? Does their Galaxy Tab have voice call capability?
I am interested in buying Galaxy Tab that could do 3G on AT&T and can make voice calls so I could use it as my phone ;-)
Click to expand...
Click to collapse
No voice calling on any of the North American Tabs. The Rogers and Bell units are the same units AT&T will be getting next week.

Can someone post att apn settings

feisley said:
I can confirm that the European Tab works fine on at&t with full 3G and Voice dialing.
It is model GT-P1000
FCC ID: A3LGTP1000
I have been using it for the past few weeks and it seems to support all the required frequencies. It has operated in every mode including (G)PRS, (E)DGE, (3G) and (H)SPA
Click to expand...
Click to collapse
However, keep in mond, the EUR does NOT support the 850 3G band, only 1900.

Croak said:
Actually, the SGH-I987 version that AT&T is getting has already launched. In Canada. On two carriers.
Click to expand...
Click to collapse
Not to be mistaken with SGH-I897, which is an Eclair (Android 2.1) -based device as far as I can tell:
http://opensource.samsung.com/ ("mobile" section)

shollywood said:
However, keep in mond, the EUR does NOT support the 850 3G band, only 1900.
Click to expand...
Click to collapse
feisley said:
I can confirm that the European Tab works fine on at&t with full 3G and Voice dialing.
It is model GT-P1000
FCC ID: A3LGTP1000
I have been using it for the past few weeks and it seems to support all the required frequencies. It has operated in every mode including (G)PRS, (E)DGE, (3G) and (H)SPA
Click to expand...
Click to collapse
Interesting news... I bought an unlocked device in Kuwait City and it matches that FCC id number, but it had some Arabic apps loaded onto it, does this mean the euro and middle east versions are the same?
Also, how much of AT&T's network is is 850?? I didnt think the 3G would work back in the states... btw, my home is in the DC area is that helps.. Thanks!

the FCC says the GT-P1000 models support 850 3G
shollywood said:
However, keep in mond, the EUR does NOT support the 850 3G band, only 1900.
Click to expand...
Click to collapse
The FCC docs actually say that the GT-P1000L, N, T models do support 850GSM and 850WCDMA(3G):
Type the device's FCC ID info in, (A3L is the manufacturer code for Samsung). Look at the documents in the 824.20 (GSM "850") and 826.40 (WCDMA "850") lower frequency ranges.
The actual test report docs list GT-P1000L and GT-P1000N and a clarification doc from Samsung says the GT-P1000T model is just a renamed L one.

This is great, it's exactly why I wanted to start this thread. SO, one person at least has a Euro-spec (GT-P1000) machine wortking with voice and 3G data on a US AT&T network.
Someone needs to post specs on the GT-P1000. Because right now, it would seem that the P1000 is the best bet for those who want to use FULL functionality on a US AT&T network.
My personal motivation for this thread is to get solid information on what model Galaxy Tab will have full US AT&T functionality (voice and good 3G data connect), and HOW to achieve that (choosing the right Galaxy Tab and flashing the right ROM). Once this is nailed down, I'll buy one. I just need to know which to buy and what to do to it.

Suleeto said:
This is great, it's exactly why I wanted to start this thread. SO, one person at least has a Euro-spec (GT-P1000) machine wortking with voice and 3G data on a US AT&T network.
Someone needs to post specs on the GT-P1000. Because right now, it would seem that the P1000 is the best bet for those who want to use FULL functionality on a US AT&T network.
My personal motivation for this thread is to get solid information on what model Galaxy Tab will have full US AT&T functionality (voice and good 3G data connect), and HOW to achieve that (choosing the right Galaxy Tab and flashing the right ROM). Once this is nailed down, I'll buy one. I just need to know which to buy and what to do to it.
Click to expand...
Click to collapse
Not FULLY working on at&t's 3g network. The 850 band for 3g is still missing and 850 is their primary 3g band and it's slowly replacing the 1900 3g band. The reason they changed was because the 850 3g band can cut thru walls better and give you a better 3g signal. I remember when my area had only 1900. My 3g sucked. Very spotty unless I was outside. I instantly noticed when the 850 upgrade took place. Solid 3g even in the darkest areas of my basement @ work. There will be an unlocked 850/1900 3g band version on the tab but it looks like it was pushed off until early 2011. Probably because they knew they would never sell any of the current north american models with the 850/1900 3g bands (bell, rogers & at&t) For what it's worth, you can pre-order that version here:
http://www.mobilecityonline.com/wireless/store/productdetail.asp?productid=26929

Raspster said:
Not FULLY working on at&t's 3g network. The 850 band for 3g is still missing and 850 is their primary 3g band and it's slowly replacing the 1900 3g band. The reason they changed was because the 850 3g band can cut thru walls better and give you a better 3g signal. I remember when my area had only 1900. My 3g sucked. Very spotty unless I was outside. I instantly noticed when the 850 upgrade took place. Solid 3g even in the darkest areas of my basement @ work. There will be an unlocked 850/1900 3g band version on the tab but it looks like it was pushed off until early 2011. Probably because they knew they would never sell any of the current north american models with the 850/1900 3g bands (bell, rogers & at&t) For what it's worth, you can pre-order that version here:
http://www.mobilecityonline.com/wireless/store/productdetail.asp?productid=26929
Click to expand...
Click to collapse
Who said at&t's primary 3G is 850Mhz?
That is just false information.
Their primary is actually 1900Mhz and they are beefing it up with new 850Mhz towers, not instead of current 1900Mhz existing in infrastructure.
Places who only recently got 3G service might be on 850Mhz but all those who got 3G up until 2 years ago are all 1900Mhz with the addition of 850Mhz.

clubtech said:
Who said at&t's primary 3G is 850Mhz?
That is just false information.
Their primary is actually 1900Mhz and they are beefing it up with new 850Mhz towers, not instead of current 1900Mhz existing in infrastructure.
Places who only recently got 3G service might be on 850Mhz but all those who got 3G up until 2 years ago are all 1900Mhz with the addition of 850Mhz.
Click to expand...
Click to collapse
I need to find the artical that says they are slowly changing over the entire 3g network to the 850 band. Stay tuned.
UPDATED: Read on
http://www.intomobile.com/2009/02/24/att-3g-network-going-850mhz-nationwide-by-2010/

Raspster said:
I need to find the artical that says they are slowly changing over the entire 3g network to the 850 band. Stay tuned.
UPDATED: Read on
http://www.intomobile.com/2009/02/24/att-3g-network-going-850mhz-nationwide-by-2010/
Click to expand...
Click to collapse
Yea this article and all the others stating the same are copying the same wrong source.
At&t never said they will be replacing 1900mhz with 850mhz...they said they will be ADDING towers and expending their network on 850mhz.
Here in the sf bay area the netwrok is mainly 1900mhz but they are ADDING new 850mhz towers so now we get mixed frequencies in places where signal was bad. They are certainly not removing 1900mhz towers.
Sent from my GT-P1000 using XDA App

This thread encapsulates my concerns exactly. I want to use my tab as a phone, and am on ATT, so will wait to see how to best implement this agenda before purchasing anything. I have a couple of concerns:
1) I think that the Galaxy Tab forum should be split amongst various carriers, since future roms and such will likely be device specific.
2) Now that more information is coming out with regards to the Nexus s and Galaxy 2, I am wondering whether I should hold out. I do want a large screen, but the development community/google support for the next Nexus phone is hard to pass up... maybe I will buy both!

Regarding splitting up the forums, I don't think that's a good idea. We tried it for the Galaxy S models and it is something of a clusterfuck, and not as much knowledge is being shared IMHO.
Sent from my GT-P1000M using XDA App

Samsung Galaxy S II Passess FCC With AT&T Bands

http://phandroid.com/2011/05/05/samsung-galaxy-s-ii-passess-fcc-with-att-bands/
Story says it all. Really looking forward to getting this for less than $700.

Perfect timing! Hopefully AT&T/Samsung will announce at their press event today.

Isn't this a week old
Sent from my SGH-T959 using XDA App

intruda119 said:
Isn't this a week old
Sent from my SGH-T959 using XDA App
Click to expand...
Click to collapse
I don't think so, no one knew what models were coming to N.A.
Edit: There was one that passed the FCC in March. It was the I9100, this is the I9100T.
Edit #2: It seems the I9000T was the Latin America version. Wonder if that will be the same this time?

Does the listing of only 850/1900 in that FCC test mean the phone won't have 2100 3G?

T-Mobile....
Sent from my GT-I9000

Taking a quick look at the FCC test reports for the 9100 and 9100T, the only spec difference I see in the first page summary of the device is the 9100T has a lower max RF output (around 16mW) on the 802.11a versus the 9100 (around 20mW). The max RF output on 802.11n is about the same on each device (around 12mW).
Both show the same EUT types: 850/1900 GSM/GPRS/EDGE/WCDMA/HSPA

Killer Bee said:
T-Mobile....
Sent from my GT-I9000
Click to expand...
Click to collapse
Was this a response to my 2100 question?
I need 2100 for international travel. If the ATT version doesn't have it then it's a no-go for me. I know TMO phones do, but they also lack 850 3G which I would like to get, plus no TMO S2 announcement so far.

i believe I9000T is for T-mobile, just a guess
as a the I9020T was for T-mobile

1) Would the FCC report be a place where NFC is mentioned?
2) Have the 900/2100 bands been removed?
3) What's WCDMA?

Ayers976 said:
1) Would the FCC report be a place where NFC is mentioned?
2) Have the 900/2100 bands been removed?
3) What's WCDMA?
Click to expand...
Click to collapse
1) I would think the NFC frequency would need to be tested by the FCC as well. I didn't see a mention of it, but the report are a few hundred pages in total. The links are in my post above.
2) It looks like the FCC reports for this device only discusses the bands that were tested. I don't know if that means the radio hardware is different or those frequecies are just "disabled".
3) from at&t site: "The Universal Mobile Telecommunications System (UMTS), which uses a wideband CDMA (WCDMA) radio interface, is a third-generation wireless technology. AT&T, like most GSM operators worldwide, operates both UMTS and GSM/GPRS/EDGE networks as an integrated network. Many UMTS devices can roam between UMTS and GSM/GPRS/EDGE networks."