Database Users

How To change 3G Frequency to work with my Carrier

Hello, I have a HTC HD 2, and I need to change the Radio Frequency to work with 3G for my carrier. I am using Telcel in Mexico and the frequency for 3G is different than what came with the phone so all I can get is Edge with this phone. Telcel's frequency is compatible with AT&T as I have used my AT&T phones without any problem with Telcel 3G so there must be a difference somewhere. This is what iPhone shows is its frequency so I imagine that the same would work with this phone:
UMTS/HSDPA (850, 1900, 2100 MHz)
GSM/EDGE (850, 900, 1800, 1900 MHz)
Any ideas or help would be greatly appreciated!!

Did you try any rom or Radio...
Maybe need to look something on setting...

loscabosav said:
Hello, I have a HTC HD 2, and I need to change the Radio Frequency to work with 3G for my carrier. I am using Telcel in Mexico and the frequency for 3G is different than what came with the phone so all I can get is Edge with this phone. Telcel's frequency is compatible with AT&T as I have used my AT&T phones without any problem with Telcel 3G so there must be a difference somewhere. This is what iPhone shows is its frequency so I imagine that the same would work with this phone:
UMTS/HSDPA (850, 1900, 2100 MHz)
GSM/EDGE (850, 900, 1800, 1900 MHz)
Any ideas or help would be greatly appreciated!!
Click to expand...
Click to collapse
Is your HD2 the European or the US version?

Version HD2
I beleive it is a US version but I bought it used off a guy on ebay... Any way I can find out?

Settings
We have gone into the settings and the settings are on Auto and we tried through the settings and advanced settings and the frequencies do not match what we need for Telcel so I am assuming some kind of modification can be done? Maybe it is in a hidden menu?

Not possible
loscabosav said:
We have gone into the settings and the settings are on Auto and we tried through the settings and advanced settings and the frequencies do not match what we need for Telcel so I am assuming some kind of modification can be done? Maybe it is in a hidden menu?
Click to expand...
Click to collapse
Sorry pal, but Mexico, as most american countries, uses the 850/1900 3G UMTS bands...
The most common sold version of the HD2, the so called 'european', supports 900/2100 bands, so you won't ever make it work with your country 3G. IT IS NOT something that can be configured, or even flashing other Radios or ROMs, it won't change it.. it is hard-coded on the on board 3G chip.
Right now, if you really want HD2 with 3G in your country, your only choice is get the 'Telstra' version (T9193) from Australia (e.g. EBAY)... it supports the 850Mhz 3G band, so it should work on your country.
As i live in Argentina, i did the same, bought such version, and it works with my country 3G operators....
Really, don't even waste more time investigating this matter. you won't be able to do it.

Htc hd2
The only way than you can get 3G on Telcel networks its if you have the htc hd2 t9193 from AU..

loscabosav said:
We have gone into the settings and the settings are on Auto and we tried through the settings and advanced settings and the frequencies do not match what we need for Telcel so I am assuming some kind of modification can be done? Maybe it is in a hidden menu?
Click to expand...
Click to collapse
Your HD2 must have been made for EU / Asia market: Model T8585 (UMTS 900/2100 Mhz)
The HD2 that's compatible with AT&T will be the only one from Australia carried by Telsta: Model T9193 (850/2100 Mhz)
How do you you know if this is Australia or EU/Asia verion - look at the back of the phone below the battery cover. If EU / Asia version, nothing would be showing but if it's Australia version you would see this "Next G network / T".
It's the design of hardware which can't be changed

loscabosav said:
I beleive it is a US version but I bought it used off a guy on ebay... Any way I can find out?
Click to expand...
Click to collapse
Remove the battery and see the model! it it is T8585 then forget about 3G! You will never make it work!

Does anyone wants to get the i9000m Vibrant?

If you guys are interested in getting the full features of the Euro i9000 but with the America 3G band on 850/1900/2100
instead of running the crippled version of Captivate/Fascinate/Vibrant
http://forum.xda-developers.com/wiki/index.php?title=Main_Page#Samsung_Smartphones
Feel free to contact me or simply reply to this topic
We're also currently running a Software Unlock Bounty for this i9000m phone
http://forum.xda-developers.com/showthread.php?t=747235
yes it's currently locked, but it works with the Sim unlock cards, however we'd rather have a software unlock, so we're inviting all the developers/hackers interested in joining.
Cheers!

Correct me if I'm wrong, but I think T-Mobile 3G works on the 1700Mhz band, which I do not see list on the Vibrant GT-I9000M page:
Compatible Cellphone Carrier
AT&T, Fido, Rogers, most North American cell providers
Quad Band Voice GSM:
850/900/1800/1900 MHz
Quad Band Data GSM/GPRS/EDGE/2G:
850/900/1800/1900 MHz
Tri Band Data 3G/HSDPA:
850/1900/2100 MHz
Soo...can you confirm this phone is compatible with T-Mobile 3G/HSDPA ?

you'r right, the is no 1700 band

timekillerj said:
Correct me if I'm wrong, but I think T-Mobile 3G works on the 1700Mhz band, which I do not see list on the Vibrant GT-I9000M page:
Click to expand...
Click to collapse
1700 is related to AWS. Tmobile (US) and Wind (Canada) use it.
Also note the T-mobile Vibrant has 4 keys (Menu/Home/Back/Quick Search) versus the international version which has 3 keys (Menu/Home/Back). Not sure what effect this could have on rooting.
The T-mobile version also lacks front camera and FM radio.

I would absolutely go for this if the i9000 supported 1700Mhz for T-Mo...

I'd like the i9000 features on the captivate

this was mainly for people on AT&T wanting the full hardware features on the i9000 but using the NAM cell band for 3G 850/1900/2100

3G would not work in Europe, correct?

Hi, Just making sure this phone's 3G bands wouldn't work in W. Europe's 3G 2100 bands. Can anyone confirm? AWS is 1700/2100, which I think is upload/download. AFAIK, you would need the phone to do both upload and download in the 2100 region.

This phone works perfectly fine in europe on 3g.
Sent from my HTC Glacier using XDA App

apple_g said:
This phone works perfectly fine in europe on 3g.
Sent from my HTC Glacier using XDA App
Click to expand...
Click to collapse
What makes you say that? Not that I know for sure either way, but I've just seen answers going in either direction. Some say yes, some no.
Here's what I know:
Most of W. Europe uses 3G 2100 (perhaps a little 900?).
This phone has bands listed as 1700/AWS/2100.
This phone uses Band IV (T-Mobile) which uses both 1700 and 2100 (one for upload and one for download I think).
When the phone is listed as "1700/AWS/2100", does that mean it will do both AWS *and* 1700 upload/download *and* 2100 upload/download? If so, then I'm golden. But, I think this phone only does AWS, meaning that one of the bands is dedicated to one data direction only, i.e. one upload and the other download. So, I'm inclined to believe it wouldn't work on 3G in Europe.

It DOES WORK in Europe!
The phone DOES work in Europe. I used it in Norway in December, France and Portugal in January.
The thing is be very careful no to roam data or it is going to cost you a fortune!!!
If you must roam data, take a look at http://xcomglobal.com/. I used their MiFI and simply loved it!
Hope this helps,
Q

Q.Entity said:
The phone DOES work in Europe. I used it in Norway in December, France and Portugal in January.
The thing is be very careful no to roam data or it is going to cost you a fortune!!!
If you must roam data, take a look at http://xcomglobal.com/. I used their MiFI and simply loved it!
Hope this helps,
Q
Click to expand...
Click to collapse
Thanks for the reply, but did you see the H icon then, and not just the E icon while in Europe? I realize that EDGE/GPRS would work just fine for data, but 3G is still in question. Even HTC says this phone, which is equipped only with AWS (Band IV), will not work in Europe for 3G data. I'm moving to Europe soon, and I'd just as soon sell it here before I leave. Thanks...

WHat I remember is seeing an R icon to warn me about the roaming. I turn the data off almost immediately so I did not pay much attention to it. I am not back in Europe until the first week in March. I guess by then you will know the answer...

In Europe ... data not working w/ Euro SIM card
I'm in Germany with an unlocked MT4G and, while the calling feature works, the data/internet package does not. Per the carrier here (Tchibo/O2), they use the 1800 band which to my knowledge IS supported by the device.
Any ideas of why this isn't working would be appreciated ... of course more appreciated would be any ideas for a solution.
Cheers,

The phone works fine with AWS and 2100 bands.
AWS is 1700 MHz band.
The device ONLY supports AWS and 2100. It doesn't support 1800 (which doesn't even exist) or 1900 or any other bands.

This phone is quad band for voice and GPRS/EDGE data - meaning 800, 1900 for N. America and 900, 1800 for Europe. It does not support the 2100 3G band as found in Europe. 3G is only supported over the AWS band in N. America, which is *both* 1700 and 2100 simultaneously.
EDIT: It appears that the specs on this phone are somewhat ambiguous. The phone supports "1700/2100/AWS". It's not clear whether the phone supports BOTH Band I (Europe 2100) and Band IV (N. America 1700/2100). There are very sporadic reports that 3G does indeed work in Europe, and hence, Band I. There are other reports to the contrary. It could be that one group is right and one is wrong, and it could also be that there are multiple batches.

floepie said:
This phone is quad band for voice and GPRS/EDGE data - meaning 800, 1900 for N. America and 900, 1800 for Europe. It does not support the 2100 3G band as found in Europe. 3G is only supported over the AWS band in N. America, which is *both* 1700 and 2100 simultaneously.
Click to expand...
Click to collapse
Please set your facts straight / upgrade your knowledge.
AWS is using frequencies in 1700-ish and 2100-ish MHz range.
But:
2100 MHz is a separate band, found in Europe, as well as in most of the world.
It's supported by this phone, regardless of AWS.
I'm using it RIGHT NOW.
And it happens to be fully functional.
When phone specs refer to frequency, they actually refer to an operating band name.
MT4G technical specs state that it supports 1700 and 2100 bands - which are IV and I, respectively.
Thus, it works in Europe, using band I.
And I'm only referring to UMTS bands, not GSM.

Jack_R1 said:
Please set your facts straight / upgrade your knowledge.
AWS is using frequencies in 1700-ish and 2100-ish MHz range.
Click to expand...
Click to collapse
Nice edit! Looks like you've upgraded yourself too.
Jack_R1 said:
I'm using it RIGHT NOW.
And it happens to be fully functional.
Click to expand...
Click to collapse
...while others claim otherwise. See my "edit" above.
Jack_R1 said:
When phone specs refer to frequency, they actually refer to an operating band name.
MT4G technical specs state that it supports 1700 and 2100 bands - which are IV and I, respectively.
Click to expand...
Click to collapse
Wikipedia isn't so great for supporting evidence. Also doesn't explain why the manufacturer lists the 3G specs as "1700/2100/AWS". The AWS is both ambiguous and redundant if the above were true.

floepie said:
Nice edit! Looks like you've upgraded yourself too.
...while others claim otherwise. See my "edit" above.
Wikipedia isn't so great for supporting evidence. Also doesn't explain why the manufacturer lists the 3G specs as "1700/2100/AWS". The AWS is both ambiguous and redundant if the above were true.
Click to expand...
Click to collapse
Yes, edited the post. My problem - sometimes the urge to make sure I'm not writing bullstuff occurs after I actually write some
I'll explain the sporadic reports: at least in part of Europe, the coverage is 900/2100 bands and not only 2100 band. In these cases, phones like Nexus One would work, but Mytouch 4G wouldn't. There is another Wikipedia link, list of UMTS carriers with their bandwidth, and you can see which countries are "affected". I remember for sure that France is.
Very few people are credible sources for reports.
First Google result for "Mytouch 4G specs":
http://mytouch.t-mobile.com/mytouch-3g-slide-phone-specifications
UMTS: Yes; Bands: 1700/2100
I don't see any mention of AWS and 1700 in the same place as 2 different bands. And I don't believe that specs should be taken from other sites, that aren't hosting official data. They're definitely not so great for supporting evidence
The phone is 100% working with 2100 band.

Fair enough. Although, it states directly on the box ----> "1700/AWS/2100". Therein lies the ambiguity and/or redundancy.

hi,
would 3G work in the UK with this phone? O2 in Uk uses 2100 W-CDMA so would it work?
Does anyone have it in the UK?
sorry if this is a stupid question.

Aiex Rlder said:
hi,
would 3G work in the UK with this phone? O2 in Uk uses 2100 W-CDMA so would it work?
Does anyone have it in the UK?
sorry if this is a stupid question.
Click to expand...
Click to collapse
I use O2 in Ireland with my mt4g when I'm over there with no problems, however my O2 plan is pay as you go with no data so I cant comment on the data there.

I bought a one month PAYG data-only plan while in Sweden (Telia).
I was averaging 3-4mb downloads in areas where I got 3G reception (reception at my in-law's summer house, on the other hand, is a different matter).

I am going over to europe soon, i plan on just turning on wifi and starbucks hope all over faster than 3G

any more helpful insights anyone?

I believe you've got your answer.
The phone works with 2100 band, so you'll have 3G.

[DEV REQUEST CM7] Modem support for Europe (WCDMA 1900/2100)

Hello there. Some of the Vibrant users are not from the USA, just like me. Here we don't have the 1700 band that T-Mobile uses, but we still use 2100 MHz for 3G.
Well, demetris_I has told me that there are much better modems for us european users from devices like the I9000. The problem is that CM7 is not able to make those modem work. At least, this is what he told me.
Flashing those modems (that are compatible with our Vibrants) makes it impossible to connect to 3G. We know that it's a software problem, so it would be fixed if a developer is kind enough to investigate the way to make CyanogenMod use the correct bands.
This is a request for any of you with dev skills to have a look into this. We are very good testers, so any change you do could be checked.
Please, have into account that we are absolutely alone in Europe, we are only a low percentage of the Vibrant users, but we really need to have a better modem that fits our networks.
Thanks a lot and I hope to have a lot of answers to this. Please, don't forget us.

Pm scrizz
Sent from my SGH-T959 using XDA App

SuperJMN said:
Hello there. Some of the Vibrant users are not from the USA, just like me. Here we don't have the 1700 band that T-Mobile uses, but we still use 2100 MHz for 3G.
Well, demetris_I has told me that there are much better modems for us european users from devices like the I9000. The problem is that CM7 is not able to make those modem work. At least, this is what he told me.
Flashing those modems (that are compatible with our Vibrants) makes it impossible to connect to 3G. We know that it's a software problem, so it would be fixed if a developer is kind enough to investigate the way to make CyanogenMod use the correct bands.
This is a request for any of you with dev skills to have a look into this. We are very good testers, so any change you do could be checked.
Please, have into account that we are absolutely alone in Europe, we are only a low percentage of the Vibrant users, but we really need to have a better modem that fits our networks.
Thanks a lot and I hope to have a lot of answers to this. Please, don't forget us.
Click to expand...
Click to collapse
You need to be specific. Based upon your post, there is no way to identify what to begin working on.
1. What modems are you trying to flash?
2. Be specific.
3. What are the results you are getting? "doesn't work" isn't an answer. Does 3g connect? No? Does 2g data work? Do you get voice calls?
4. Be specific.
5. The Vibrant comes out of the box with UMTS Band I (2100mhz) support. Do the default T-Mobile radios work on non-CM7 Roms?
6. Be specific.

Hi.
Let me clear some things up.
Modems from other phones work, but only on gsm basebands.
WCDMA is not connectable until we flash any Vibrant modem.
Well this is the whole idea,
2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 1700 / 1900 / 2100
Those are the bands supported by the vibrant.
So we should be able to connect to WCDMA (2100)as we are able to connect to GSM(GPRS), with other modems.
So Vibrant CM rom refuses to connect to WCDMA 2100(Europe) but gladly connects to GSM Bands (900/1800 tested) and i think is a rom specific support problem.
We need a capable developer to test and fix this issue by just looking at the Captivate/GalaxyS code git for specific changes that dont reflect on the vibrant code from the same git.
Example:
Code tells the phone to look for WCDMA to 1700 but as we flashed the phone with a different modem the initial req is not given so the phone stucks at no signal.
If you flash back a vibrant modem signal checking code executes right and proceeds to connect to next available signal that is 2100.

Sorry for the delay. I was at work.
demetris gave a very good explanation of what it happens. The fact is that the Vibrant's hardware can connect to 3G using HSDPA 1700 / 1900 / 2100.
When the Vibrant is using a modem made for it (Vibrant with Vibrant modem) you can connect to every band it does support.
When a modem from I9000, Fascinate, Captivate,… is flashed, everything works as expected, so I think they are almost identical in functionality, but SOMETHING makes it impossible for it to connect to any of the 3G bands.
When in the dialpad you enter the code to select bands, you can see/select the bands you wish to use, but it just refuses to connect.
Why do we want this working? Because for sure, modems from the european version (I9000) might be optimized for our networks and be less battery consuming or have increased coverage. demetris tested them and noticed an improvement.
So, we are asking you to look into it so modems from the I9000 (priority) becomes usable for us.
I hope to be specific enough this time. Of course, I offer myself as a beta tester. My carrier uses WCDMA 2100 MHz for 3G (UMTS).
Thanks in advance and don't hesitate to ask us!

Flashing to differed band model

Hello,
I'm very sorry if the question was asked before, didn't dig to it.
If I buy a version GT-I9020 or GT-I9020T that works in 1700 Mhz UMTS rage will I'll be able to reflash it later to GT-I9020A to make it work on 850/1900?
I'm thinking about buying it but this is crucial for me, as I'm moving to a different country in a year and I need 850/1900 over there.
Thank you for you help!

http://ars.samsung.com/customer/usa...ID=2&PROD_SUB_ID=557&PROD_ID=752&AT_ID=356687

Honestly I don't need a tip from Samsung. I'm asking you guys if I can flash different model band radio. I know that I9020T will not work with 850/1900 UMTS. I need AWS for now and 850/1900 for later.

banjanti said:
Honestly I don't need a tip from Samsung. I'm asking you guys if I can flash different model band radio. I know that I9020T will not work with 850/1900 UMTS. I need AWS for now and 850/1900 for later.
Click to expand...
Click to collapse
That's quite impossible.
If you insist to try, then welcome your bricked phone

It sucks then. Any advice on the phone that will cover both 1700/2100 and 850/1900 UMTS bands?

banjanti said:
It sucks then. Any advice on the phone that will cover both 1700/2100 and 850/1900 UMTS bands?
Click to expand...
Click to collapse
buy a gsm galaxy nexus, it works on both sets of bands. other than that youre out of luck.

Thx, I've goodled it too. It looks like nice phone, but pretty expensive at the moment. I'll have to wait a bit a guest.
Verizon versions they sell on ebay are probably not flashable to pentaband?

banjanti said:
Verizon versions they sell on ebay are probably not flashable to pentaband?
Click to expand...
Click to collapse
You really, really, really, really need to do a lot of reading before you even dream of flashing anything.
Your question is analagous to asking if a software update will allow your microwave oven to run on gas.
A cellular phone contains a hardware radio that communicates with the network. Although people here and elsewhere often refer to a flashable "radio", what they really mean is a radio driver. Nothing you flash will ever change the hardware. Verizon and Sprint phones will remain CDMA (unless they also have a SIM slot, as a few do). GSM phones will remain GSM and will not be capable of changing their frequency via software.