Database Develop

vodafone Australia, which diamond ?

Hi All
hoping you can give some advice here, I'm currently with vodafone Australia and looking at buying a diamond.
Currently they are available locally as the Telstra HTC touch diamond (competing network) or via grey import models.
I understand through numerous threads that there is no quad band model as yet and that telstra uses 3g on the 850mhz band, i think but am not sure that vodafone uses 2100mhz for 3g.
I'm confused as to which handset im better off with the telstra one or a grey import.
To make it more confusing I'm going to USA and Sth America, shortly and want to make sure it roams on 3g.
HELP!!!!

no-one even has an opinion?!?
After scouring the rest of the 'net it appears that;
telstra uses 850mhz hsdpa,
vodafone and optus uses 2100mhz umts,
optus will launch 900mhz hsdpa in the near future.
I gather from this that no matter which australian carrier network i use i will not be able to use one carrier or another does someone have any further insight on this?

I think I read on Whirlpool that the Telstra handsets should work on any network - except Optus' 900mhz.
Im with Telstra (work sim), so just went with the Telstra handset.
I've got a Virgin sim I could try in it if you'd like?

that would help . . . cheers
It cant do any harm... I guess my real issue is that I want to make sure I'm getting the highest possible data speeds in whatever country I'm in and I'm not sure what difference there is between the carrier frequency's being used. I get the general impression that only telstra has 7.2mps (theoretical) speed at present, but if i go with a handset that doesnt support 900mhz and i end up with 2100mhz am i missing out on vodafone hsdpa......
im consfused

I was in the same boat when trying to figure out which Diamond to get. I jumped ship and ordered a DIAM130 (Telstra ver.).
Its my understanding that the Optus 900MHz UMTS will be for use in regional areas, whereas 2100MHz for metropolitan. A quick search of the net also indicated that 2100MHz is the dominant UMTS band throughout most of the world, with the exception of the U.S. which uses 850/1900 I believe. So I figure the DIAM130 would be the best bet if you want some sort of 3G connection whatever country you may be in.
If I'm mistaken, can someone please correct me...
EDIT: Looking back at your posts, I'm not sure if you realise this, but the DIAM100 is 900/2100 MHz UMTS and the DIAM130 is 850/2100 MHz UMTS.

Yep, I think the Helstra one with 850mhz/2100mhz looks like the best bet. It would seem that all the carriers in Oz use the 2100mhz in the cities and 850mhz or 900mhz in rural areas.
The US and Sth.America seem to use 850mhz and Europe uses 900mhz/2100mhz.
The whole reason this came up was about 2 weeks ago I went into a Helstra shop and HTC had a marquis with their own staff, they actually stated do not buy a Helstra handset wait until October 1 when the other networks will have quadband handsets. I put this down to them not knowing what they were talking about.
I cant wait any longer though and I think I'm off to JB HiFi to pickup a telstra one, whirlpool forum users have been picking them up for between $750 and $800.

I bought my Diamond from JB (telstra phone bought outright) and I use it with voda prepaid.
I can access the GSM network fine and their 3G network as well. But I force my phone to use GSM only, apparently 3G drinks more battery power.

I am on the vodaphone network ( work). I bought a diamond from a H/K supplier & have never had anytrouble using the 3g network in any of the main capital cities.
Unless you intend to use 3g A LOT in the country areas of australia, then a presumably cheaper grey import DIA 100 will do the trick.
only would suggest that you upgrade to one of the great ROMS available on this site from the generous chefs!
sorry but i think telstra are ripping off the aussie customers with the 130 model.

I have a DIAM100, it works on all networks in Australia including Telstra NextG (yes it DOES work on 850MHz HSDPA). I currently use the phone on the 3 network which use 2100MHz and get very good speeds (in excess of 3.5mbps).

Hi poedgirl,
noticed your'e using an older radio version than whats currently available.
at the risk of telling you to suck eggs, i would suggest you try the 1.00.25.08 Radio rom as the increase in signal phone strength & GPS strength was unbelievable!
thats assuming you are located in Sydney

This Post in the ROMs section pretty much covers which models you can use or will need on the various AU networks.
There are 3 3G Network Frequencies in AUS
850 MHz (NextG) - DIAM130
900 MHz Optus - DIAM100, DIAM110, DIAM200, DIAM300
2100 MHz Optus, Vodafone, Three, Telstra(use Three's) - DIAM100, DIAM110, DIAM200, DIAM300, DIAM130
ALL Diamonds have the 2100MHz frequency!
Click to expand...
Click to collapse
I have a grey import DIAM100 running on Three and it has not missed a beat.

poedgirl said:
I have a DIAM100, it works on all networks in Australia including Telstra NextG (yes it DOES work on 850MHz HSDPA)..
Click to expand...
Click to collapse
just out of interest how were you able to determine this?

poedgirl said:
I have a DIAM100, it works on all networks in Australia including Telstra NextG (yes it DOES work on 850MHz HSDPA). I currently use the phone on the 3 network which use 2100MHz and get very good speeds (in excess of 3.5mbps).
Click to expand...
Click to collapse
sorry to disappoint, I used to think the same, but see this and this You are right - it uses HSDPA, but only on the 2100 network, outside of that network the phone will show "E" for "edge" .(which is GPRS).

Thanks timn2087, that what I thought. I suspect the Telstra branding and web interface can lead you to believe you are on the Telstra NextG network, regardless of whether you are connecting with a phone capable of 850MHz or 2100MHz. My DIAM100 (Same hardware) on 3 behaves exactly as you describe when it roams onto Telstra GSM displaying "E" for "edge".

i bought the helstra one
well i just went for it, and bought the diam130. ive gone the hardspl, radio 05, swift rom. all seems to working.
got if for $760 outright at jb hifi pitt st mall sydney store. no stress haggle said to the guy whats the best price he said $800 i said how about $760 he goes "done".
thanks for all your help everyone

logger said:
Thanks timn2087, that what I thought. I suspect the Telstra branding and web interface can lead you to believe you are on the Telstra NextG network, regardless of whether you are connecting with a phone capable of 850MHz or 2100MHz. My DIAM100 (Same hardware) on 3 behaves exactly as you describe when it roams onto Telstra GSM displaying "E" for "edge".
Click to expand...
Click to collapse
correct. The DIAM130 on Next G will show a 3G icon whenever it is on 850 Mhz, occasionally this icon changes to "H" HSDPA when a data connection is active.

timn2087 said:
sorry to disappoint, I used to think the same, but see this and this You are right - it uses HSDPA, but only on the 2100 network, outside of that network the phone will show "E" for "edge" .(which is GPRS).
Click to expand...
Click to collapse
Well, for one, the phone gets a HSDPA signal in Mandurah - where there is no 3 coverage (only ever get Telstra roaming there if you're with 3). Also, as others have said, if you are on 3's network, the network shows up as "3Telstra", which it does not on mine.

T-Mobile 3G Los Angeles Oct. 23rd launch

So good news for all Diamond euro owners in LA (and other places of course)...the tmobile network supports the 2100mhz band for 3G so no need for a US version!!
http://support.t-mobile.com/knowbase/root/public/tm23715.htm#7
Sorry if this is old news, but i just realized it =)

this is great if true?
T-Mobile devices use the 1700Mhz/2100Mhz frequency band (for 3G) and I thought Europe 3G devices use 900Mhz/2100Mhz. Could U clarify further...

you said it correct...tmobile does use 1700mhz/2100mhz, and the euro diamond supports 2100mhz which should work since tmobile will be using it...i spoke to a tmobile tier 2 rep, he confirmed it as well...

That can't be right. T-Mobile AWS 3G uses the 1700 MHz band for uplink and 2100 MHz for downlink. I doubt T-Mobile US set up aside any channels in the 2100 MHz band as uplink channels.
It's kind of academic, as I can't get 3G on T-Mobile USA using a Euro Diamond in NYC, where we've had 3G deployed for a few months now. I've never heard of anyone else doing it either. Oddly, there's a "UMTS(1700)" selection in the band settings in the phone control panel, but if I try selecting that, it just jumps back to using T-Mobile's normal PCS band with EDGE for data.
If that tier 2 tech can get you onto AWS 3G with your Diamond, definitely let us all know about it, but don't get your hopes up too high.

Drachen said:
That can't be right. T-Mobile AWS 3G uses the 1700 MHz band for uplink and 2100 MHz for downlink. I doubt T-Mobile US set up aside any channels in the 2100 MHz band as uplink channels.
It's kind of academic, as I can't get 3G on T-Mobile USA using a Euro Diamond in NYC, where we've had 3G deployed for a few months now. I've never heard of anyone else doing it either. Oddly, there's a "UMTS(1700)" selection in the band settings in the phone control panel, but if I try selecting that, it just jumps back to using T-Mobile's normal PCS band with EDGE for data.
If that tier 2 tech can get you onto AWS 3G with your Diamond, definitely let us all know about it, but don't get your hopes up too high.
Click to expand...
Click to collapse
AWS?? well the tier 2 tech did say it...i dont know if he was just talking out of his ass or not...but we'll see in the coming weeks...ill try to get tmobile rep on the phone again to ask them how i can get it...or if i can, even though its supported..

Malik05 said:
AWS?? well the tier 2 tech did say it...i dont know if he was just talking out of his ass or not...but we'll see in the coming weeks...ill try to get tmobile rep on the phone again to ask them how i can get it...or if i can, even though its supported..
Click to expand...
Click to collapse
As I understand it, if a phone says it supports 2100 it is referring to the UMTS Band 1 used in Europe which is 1920-1980MHz Uplink & 2110-2170Mhz Downlink (see UMTS Frequency Bands - Wikipedia). The 1700AWS Band (UMTS Band 4) uses 1710-1755MHz Uplink and 2110-2155MHz Downlink. So, while they do overlap some they are not identical (A Visual Guide to AWS - PhoneScoop)
So, I don't believe that a phone with 2100 EU support will work with T-Mobile 3G because it doesn't support the 'right' 2100 nor the 1700. Likewise, I don't believe that a phone with 1700 support will work for 2100 EU.

If you want to get technical the "US" Diamond won't work for 3g on T-Mobile either. The 3g band is only for 850/1900. (so i guess we're screwed either way) I'm in Salt Lake City and I don't believe Utah is slated to get 3g until 2009 at this point. I bought the diamond knowing full well that 3g was going to be a slim possibility on this phone. However, a user with a DIAM100 is claming that he's been getting 3g service on T-Mobile in NJ. He said that he'd post screenshots.. I don't know if he's done that or not. I guess all we can do is wait and see.

RavenGirl said:
If you want to get technical the "US" Diamond won't work for 3g on T-Mobile either. The 3g band is only for 850/1900. (so i guess we're screwed either way) I'm in Salt Lake City and I don't believe Utah is slated to get 3g until 2009 at this point. I bought the diamond knowing full well that 3g was going to be a slim possibility on this phone. However, a user with a DIAM100 is claming that he's been getting 3g service on T-Mobile in NJ. He said that he'd post screenshots.. I don't know if he's done that or not. I guess all we can do is wait and see.
Click to expand...
Click to collapse
Do you know who this user is? maybe i can PM him and get some details...i knew i wasn't going to get 3G with the diamond, but after talking to the rep. i kind of want to look into it more since there may be a possibility.

RavenGirl said:
If you want to get technical the "US" Diamond won't work for 3g on T-Mobile either. The 3g band is only for 850/1900. (so i guess we're screwed either way) I'm in Salt Lake City and I don't believe Utah is slated to get 3g until 2009 at this point. I bought the diamond knowing full well that 3g was going to be a slim possibility on this phone. However, a user with a DIAM100 is claming that he's been getting 3g service on T-Mobile in NJ. He said that he'd post screenshots.. I don't know if he's done that or not. I guess all we can do is wait and see.
Click to expand...
Click to collapse
Honestly I'm gonna go ahead and call BS on him for that, I've never heard of anyone getting T-Mobile 3G and I know quite a few people with the Diamond/Raphael on T-Mobile in 3G areas.

wpsantennas said:
As I understand it, if a phone says it supports 2100 it is referring to the UMTS Band 1 used in Europe which is 1920-1980MHz Uplink & 2110-2170Mhz Downlink (see UMTS Frequency Bands - Wikipedia). The 1700AWS Band (UMTS Band 4) uses 1710-1755MHz Uplink and 2110-2155MHz Downlink. So, while they do overlap some they are not identical (A Visual Guide to AWS - PhoneScoop)
So, I don't believe that a phone with 2100 EU support will work with T-Mobile 3G because it doesn't support the 'right' 2100 nor the 1700. Likewise, I don't believe that a phone with 1700 support will work for 2100 EU.
Click to expand...
Click to collapse
I have the USA sold "quad band" euro diamond distributed by htc USA. This is essentially re-flashed euro diamond hardware sold to support american networks, not the 850/1900 newest USA 3G diamond compatable with AT&T. I have looked into this issue and also talked to T-mobile and there seems to be alot of confusion regarding T-mobile's AWS USA 3G network (or maybe they have simply confused me). Here is what I have found out: Assuming they are correct, they are telling me 3G voice for T-mobile usa runs in both the 1700 AND 1900 mhz band, and therefore my euro diamond shoud be supported at 1900mhz for voice 3g support. This 1900mhz is part of the "quad band" voice radio hardware on the euro diamond. Data (AWS 3G for USA) "HSDPA" , which T-mobile has not yet released, runs in the 2100mhz bandwidth, and Data AWS "HSUPA 3g" runs in the 1700mhz bandwidth. Therefore my hardware would not support HSUPA @ 1700mhz, but would support the HSDPA @ 2100mhz. As to the idea that euro bandwidths are different than USA bandwidths, well apparently they are. For example "2100mhz" networks in europe might be actually using 2110mhz-2170mhz, whereas in the USA T-mobile's network may use 2100-2140mhz actual bands. However because these are close and still in the 2100mhz band, there should still be compatability with 2100mhz hardware radios regardless of networks varying the bandwidth slightly.
Of course this may be too optimistic, but it would be very cool if true and I am hoping for the best .

sureloch said:
I have the USA sold "quad band" euro diamond distributed by htc USA. This is essentially re-flashed euro diamond hardware sold to support american networks, not the 850/1900 newest USA 3G diamond compatable with AT&T. I have looked into this issue and also talked to T-mobile and there seems to be alot of confusion regarding T-mobile's AWS USA 3G network (or maybe they have simply confused me). Here is what I have found out: Assuming they are correct, they are telling me 3G voice for T-mobile usa runs in both the 1700 AND 1900 mhz band, and therefore my euro diamond shoud be supported at 1900mhz for voice 3g support. This 1900mhz is part of the "quad band" voice radio hardware on the euro diamond. Data (AWS 3G for USA) "HSDPA" , which T-mobile has not yet released, runs in the 2100mhz bandwidth, and Data AWS "HSUPA 3g" runs in the 1700mhz bandwidth. Therefore my hardware would not support HSUPA @ 1700mhz, but would support the HSDPA @ 2100mhz. As to the idea that euro bandwidths are different than USA bandwidths, well apparently they are. For example "2100mhz" networks in europe might be actually using 2110mhz-2170mhz, whereas in the USA T-mobile's network may use 2100-2140mhz actual bands. However because these are close and still in the 2100mhz band, there should still be compatability with 2100mhz hardware radios regardless of networks varying the bandwidth slightly.
Of course this may be too optimistic, but it would be very cool if true and I am hoping for the best .
Click to expand...
Click to collapse
Unfortunately, they've provided you some bad information. Each frequency band/range has a pair of uplink and downlink frequencies - you can't use one without the other - you have to use both. Generally, the uplink and downlink frequencies are relatively close to each other however, the 1700 AWS band has uplink and downlink spread quite a distance apart. Uplink is in the 1700MHz range, downlink is in the 2100MHz range and both have to be used. In the US, 1700 & 2100 is essentially one band.
1900MHz (the PCS band) isn't 3G for T-Mobile (although they technically could put it there at some point.) Right now, 1900MHz for T-Mobile is EDGE voice and data. Most other carriers do have 3G on the 1900MHz band, T-Mobile just doesn't have enough spectrum available in that band.
In short: A phone that supports UMTS 2100 will not work for T-Mobile US 3G. A phone that supports AWS/UMTS 1700 will work for T-Mobile US 3G but not for European 2100 3G. (And 1900MHz PCS will give you traditional EDGE on T-Mobile US.)

Malik05 said:
Do you know who this user is? maybe i can PM him and get some details...i knew i wasn't going to get 3G with the diamond, but after talking to the rep. i kind of want to look into it more since there may be a possibility.
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=427755
post 3, ll
and
http://forum.xda-developers.com/showthread.php?p=2610960#post2610960

Unbranded X1 3G working in Canada / USA?

My friend has a unbranded X1, but don't know if can be compatible for the 3G network in Canada or USA? Anyone knows? Or North American ROM needs to be flashed on to enable 3G compatibility with the Carriers in North American??
Thanks in advance for any inputs

White_Hair said:
My friend has a unbranded X1, but don't know if can be compatible for the 3G network in Canada or USA? Anyone knows? Or North American ROM needs to be flashed on to enable 3G compatibility with the Carriers in North American??
Thanks in advance for any inputs
Click to expand...
Click to collapse
This is a very vexed issue. Please read the thread on 850Mhz 3G connection.
The short answer is:
1) "unbranded X1" is irrelevant. Use Start>Settings>System>Device ID to find the actual device version, ie. X1i or X1a
2) if your friend is lucky and the Device ID is X1a, then the device is capable of connection to the US/Aus/S America/S Africa 850Mhz 3G band
3) if the Device ID is X1i, then no such luck. This is a hardware issue, not firmware
Both will connect to the 2100Mhz UMTS band which is commonly used in cities, so if your friend never ventures outside cities the X1i should work OK for 3G

I have a question on this, when SE 1st released info about X1, they mentioned that it's Quand band GSM, GPRS, EDGE, UMTS/3G 850, 900, 1900, 2100. Why when they released it, they had to make 2 versions to support different networks? I think that this is stupid, they can do that for branded phones but not for SE unbraded phones, exactly like HTC and the HD, Diamond and Pro. We pay a lot of money for these for so at least give us full functionality... especially that these phones are more of business phones, so it's expected that people travel with these phones....or am i wrong about that?
thanks

I have an X1i in the US an it works flawless on the AT&T network with 3G (inc. HSDPA!!!)

rwholden said:
I have an X1i in the US an it works flawless on the AT&T network with 3G (inc. HSDPA!!!)
Click to expand...
Click to collapse
In what part of the USA are you?

George Knighton said:
In what part of the USA are you?
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Click to collapse
yeah that would be great to know.. Im in LA and i was looking to get one. I know that ATT 3G works both 850 and 1900, but depending on where you are there's one band stronger than the other.

Thanks for the info man.
I really appreciated.
Does anyone know what what band is Rogers 3G running on?
ianl8888 said:
This is a very vexed issue. Please read the thread on 850Mhz 3G connection.
The short answer is:
1) "unbranded X1" is irrelevant. Use Start>Settings>System>Device ID to find the actual device version, ie. X1i or X1a
2) if your friend is lucky and the Device ID is X1a, then the device is capable of connection to the US/Aus/S America/S Africa 850Mhz 3G band
3) if the Device ID is X1i, then no such luck. This is a hardware issue, not firmware
Both will connect to the 2100Mhz UMTS band which is commonly used in cities, so if your friend never ventures outside cities the X1i should work OK for 3G
Click to expand...
Click to collapse

White_Hair said:
Thanks for the info man.
I really appreciated.
Does anyone know what what band is Rogers 3G running on?
Click to expand...
Click to collapse
Please read and search before asking...
You answer is HERE (google search, first link displayed for "wikipedia rogers 3G": the band has always been there waiting for you to read it under "Services": Rogers 3G 850MHz) so you need the X1a, the X1i won't pick that band
Sorry to bother but this has been posted before (read and search before asking)

mrabie said:
yeah that would be great to know.. Im in LA and i was looking to get one. I know that ATT 3G works both 850 and 1900, but depending on where you are there's one band stronger than the other.
Click to expand...
Click to collapse
I'm also on ATT in Colorado (Windsor/Ft. Collins area) and get 3G almost all the time. I've been all over the state and have got 3G service just about everywhere, only rolling over to Edge from time to time.
Oh and I've got an X1i.

40oz2Freedom said:
I'm also on ATT in Colorado (Windsor/Ft. Collins area) and get 3G almost all the time. I've been all over the state and have got 3G service just about everywhere, only rolling over to Edge from time to time.
Oh and I've got an X1i.
Click to expand...
Click to collapse
Gr8 thanks for the info

yeah, I don't get any 3G in canada with my X1i.
I live in Vancouver BC, always in Edge.
I have had an occurence once, but only once! =[

I get HSDPA in the Dallas\Ft. Worth Area, and in Lawton, OK. Everywhere else I go I'm on Edge. And this is with a X1a on ATT.

ianl8888 said:
This is a very vexed issue. Please read the thread on 850Mhz 3G connection.
The short answer is:
1) "unbranded X1" is irrelevant. Use Start>Settings>System>Device ID to find the actual device version, ie. X1i or X1a
2) if your friend is lucky and the Device ID is X1a, then the device is capable of connection to the US/Aus/S America/S Africa 850Mhz 3G band
3) if the Device ID is X1i, then no such luck. This is a hardware issue, not firmware
Both will connect to the 2100Mhz UMTS band which is commonly used in cities, so if your friend never ventures outside cities the X1i should work OK for 3G
Click to expand...
Click to collapse
Nobody in the US uses 2100MHz, AFAIK, and I'm pretty sure Canada follows the same frequencies.
1900, on the other hand, is supported by the X1i, which is used by AT&T, Rogers, and Bell.
The downside is that if you're unfortunate enough to use T-Mobile, the network uses 850MHz only, and you're stuck with EDGE.

man guy this is too simple to find and you open a thread for this??!!??!?! STOP CLOGGING THE FORUMS!!!!!

is the USA 3g band going to be a software or hardware update?

My understanding is that there are people who have the TP2 activated here in the US...
but 3g doesn't work since it uses a different band in EU
so...the million dollar question...
is this hardware or software issue and eventually fixable with a rom upgrade in the future?
thanks for your input

eigerzoom said:
My understanding is that there are people who have the TP2 activated here in the US...
but 3g doesn't work since it uses a different band in EU
so...the million dollar question...
is this hardware or software issue and eventually fixable with a rom upgrade in the future?
thanks for your input
Click to expand...
Click to collapse
Since the hardware is very much like the Raphael hardware I would guess that the correct hardware needs to be in place for US 3G. I hope I am wrong since I have a euro version TP2 here in the states.

yeah...its looking like hardware...

It is a hardware thing. They are on different bands (Quad band and tri-band).

dgourd said:
It is a hardware thing. They are on different bands (Quad band and tri-band).
Click to expand...
Click to collapse
I dont think it is even bands...my TP2 is quad band I believe and can not get 3G with AT&T.
Bands for my phone Quad Band 850/900/1800/1900

yah plenty of US ppl have them but the euro models only have 3g on 2100mhz (basically wifi???)
usa 3g is on different band...
the quad bands are for phone use (i think...but i'm a noob)
att 3g is 850.1900 tibble is 1700 and telstra is 850/1900
so if i understand it right...to gain 3g on different band besides 2100 (wifi/eu) you are looking at hardware

eigerzoom said:
but the euro models only have 3g on 2100mhz (basically wifi???)
Click to expand...
Click to collapse
what does wifi have anything to do with this?

cmonex said:
what does wifi have anything to do with this?
Click to expand...
Click to collapse
uh...lol...dont mind me
im just a nub
i should have said wcdma
astain hellbinger (im sure i mispelled that) has been home schooling me...
and he represents any knowlede i have tried to represent here...
forgive my crude interpretation
some of it is sticking though...lol

If you purchased a quadband unlocked TP2, you will never be able to get US 3G on it unless you can get the hardware modified (which in all likelihood, you can't).
If you have a TP2 with triband then it will either support AT&T (850/1900/2100) or T-mobile USA (850/1700/2100). A phone model will probably not come out that supports both T-mobile and AT&T 3G frequencies. This would require a quadband phone with (850/1700/1900/2100). A phone with all four of those frequencies has never been made.
EDGE will work on almost all carriers, world-wide, on a quadband phone EDGE will work on most carriers world-wide on a triband phone.
850 is mostly used for EDGE (both up and downlink). 1700/1900 are commonly used for uplink 3G. 2100 is commonly used for downlink 3G.
I hope that this clears things up.

As mentioned above, internal hardware is almost identical as the Raphael.
This thread gathered the most information for 3G Raphael in the US.
http://forum.xda-developers.com/showthread.php?t=420865&page=40
So probably hardware and no go although LTxda mentioned bricking his Raphael trying to get 3G working with Elite's team and cmonex, so maybe she as something to add !? =Þ

skyler17 said:
If you purchased a quadband unlocked TP2, you will never be able to get US 3G on it unless you can get the hardware modified (which in all likelihood, you can't).
If you have a TP2 with triband then it will either support AT&T (850/1900/2100) or T-mobile USA (850/1700/2100). A phone model will probably not come out that supports both T-mobile and AT&T 3G frequencies. This would require a quadband phone with (850/1700/1900/2100). A phone with all four of those frequencies has never been made.
EDGE will work on almost all carriers, world-wide, on a quadband phone EDGE will work on most carriers world-wide on a triband phone.
850 is mostly used for EDGE (both up and downlink). 1700/1900 are commonly used for uplink 3G. 2100 is commonly used for downlink 3G.
I hope that this clears things up.
Click to expand...
Click to collapse
http://en.wikipedia.org/wiki/UMTS_frequency_bands

X1a, 3G in taiwan?

I understand X1a is the north american version which has 850/1800/2100 bands and X1i has 900/1800/2100. 3G will work well with X1a in Canada, but X1i doesn't work too well.
When in Taiwan, I had the chance to test my X1i and it received 3g signals.
I was wondering whether an X1a would be able to get 3g signals as well?
I found a site that lists the frequencies for different countries:
www.worldtimezone.com/gsm.html
Taiwan uses 900/1800 but it lists 3G as 2100, so I'm a bit confused as to whether an X1i (which has 2100) would work.

Here in my country, both the i and the a have working 3G. It really depends on what the Telcos are using.

Thanks so much for replying..
I'm using Taiwan mobile
A website tells me it uses
900/1800, but 3G is 2100
http://www.gsmworld.com/roaming/gsminfo/cou_tw.shtml
Since the X1a has 2100, it is capable of using 3G?

I'm using Xperia X1a and taiwan mobile operator.. and i'm able to use video call,3G and HSDPA connection without any problem..

Thank You so much for this reply!

I'm in Toronto and have an x1i. I'm under Fido, and about 2 or 3 months ago i started up pick up a 3G+ signal. Is anyone else getting this? I don't have a data plan so i haven't check if it actually works.
Could it possibly be that I'm roaming??? I'm roaming icon is always on, but that may be a glitch of a custom rom that I'm using.
Thanks

I'm in vancouver right now and my X1i uses 3G connection. I thought it was because of the olympics that they set that up.