Database Develop

Diamond & ATT

I couldn't help myself. This phone seems perfect so i ordered a diamond that will arrive tommorow. Now my question is if anyone thinks the bands for US are present and need to be unlocked or if this will end up on ebay . Thanks!

There's several topics about it there.
You won't get any 3G in the US with it, and you'll only be able to use the 1900 band for voice/GPRS/EDGE.

Actually you are incorrect. 1900 Mhz is supported w/3G w/AT&T in certain areas. Unfortunately my Diamond is not even getting an EDGE connection. From what I am hearing the Diamond is only supporting 2100Mhz frequency w/3G according to HTC. Which to me makes no sense.. I am blogging my experience with it as it is the first production unit in the USA.

You just said i was incorrect and correct in the same paragraph lol
This is where all the confusion starts.. For GSM/GPRS/EDGE it does 900/1800/1900 MHz - only 1900 would work in the US. For UMTS (3G) it only does 900/2100 - neither of these frequencies are used in the US.
The protocols and modulation used are completly different for GSM/GPRS/EDGE vs UMTS. The dispersal of uplink and downlink frequencies is completly different. Just because it can do 1900 for GSM doesnt mean it should do 1900 UMTS.
mobilitytoday said:
Actually you are incorrect. 1900 Mhz is supported w/3G w/AT&T in certain areas. Unfortunately my Diamond is not even getting an EDGE connection. From what I am hearing the Diamond is only supporting 2100Mhz frequency w/3G according to HTC. Which to me makes no sense.. I am blogging my experience with it as it is the first production unit in the USA.
Click to expand...
Click to collapse

So why wouldnt I get Edge? I have had triband phones before i.e HTC 8525 that worked ?

mobilitytoday said:
So why wouldnt I get Edge? I have had triband phones before i.e HTC 8525 that worked ?
Click to expand...
Click to collapse
You should get edge. Edge is an extention of GPRS but requires a different BTS (radio tower) setup. Its possible you don't have a strong enough signal, but it sounds like your confident you should have edge in that area.
The only thing i can suggest it to try in a different area - like the centre of town. Also, confirm your APN is setup corectly, the [G] may just be telling you GPRS is available, but not that you can attach.

I know with my elfin it takes a little stronger signal to initiate the Edge icon the first time (ie. after a hard reset). I can't get an edge signal inside my office but once I walk outside for a minute or two, bam I have it. Then when I go inside I still have it.

mobilitytoday said:
Actually you are incorrect. 1900 Mhz is supported w/3G w/AT&T in certain areas. Unfortunately my Diamond is not even getting an EDGE connection. From what I am hearing the Diamond is only supporting 2100Mhz frequency w/3G according to HTC. Which to me makes no sense.. I am blogging my experience with it as it is the first production unit in the USA.
Click to expand...
Click to collapse
Diamond had UMTS(2100)+GSM(900+1800),UMTS(850+1900)+GSM(850+1900),UMTS(800+2100),UMTS(850+2100)+GSM(900+1800),UMTS(850)+GSM(900+1800) and UMTS(1700) depend what rom you had in your Diamond and where you bought your Diamond , At&T should be show 3G in US and T-mobile used 3G (1700 Mhz) in New York area

The platform in the phone can support all those bands, so you might be able to see them (like in the test rom) but the antennas are not there. So you won't actually be able to pick up a signal.
mwang said:
Diamond had UMTS(2100)+GSM(900+1800),UMTS(850+1900)+GSM(850+1900),UMTS(800+2100),UMTS(850+2100)+GSM(900+1800),UMTS(850)+GSM(900+1800) and UMTS(1700) depend what rom you had in your Diamond and where you bought your Diamond , At&T should be show 3G in US and T-mobile used 3G (1700 Mhz) in New York area
Click to expand...
Click to collapse

I guess all of us US early adopters must hope the hardware is there and can be enabled with a future flash.

T-mobile in the US uses 1900mhz for GSM/Edge and only has 3g in NYC, so I'm figuring that it's a cool stop-gap device until something is available for T-mobile 3G.

so anyone have the rom that had thoose bands....

confused
so im a little confused.... If I buy a diamond on ebay, it wont work in the US? or 3g just wont work? does the diamond accept a sim card?

On AT&T it will give you only GPRS! On Tmobile (NEW) it shows EDGE!! I dont understand this at all!

Praygo said:
so im a little confused.... If I buy a diamond on ebay, it wont work in the US? or 3g just wont work? does the diamond accept a sim card?
Click to expand...
Click to collapse
Voice and EDGE will work just fine as long as you are in a major area that uses 1900 band. You might have weak or no signal when you are in smaller rural areas since those usually extend into the 850 band.
You will not be able to use 3G since the Diamond only supports 900/2100, neither of which are used by AT&T

It looks like if you have ATT you are hosed for both voice and data, as most of ATT voice and data (Edge) is 850mhz. Most if not all of T-mobile voice-data-Edge is 1900mhz so you will have at least Edge. If you're looking for 3g data you're SOL until the US version of the diamond is released.

this fn blows htc has really screwed us here in usa...i was willing to spend 800 for this device and htc doesnt even see this? by the time it comes out here in quadband ...the x1 will be out and not mention the 3g iphone...oh well

martyotaku said:
this fn blows htc has really screwed us here in usa...i was willing to spend 800 for this device and htc doesnt even see this? by the time it comes out here in quadband ...the x1 will be out and not mention the 3g iphone...oh well
Click to expand...
Click to collapse
We will get the diamond, have to wait for the US version that does the different bands.... wich leads me to my next question. What carrier do you think will get the diamond??? AT&T seems to get all the cool stuff.

martyotaku said:
this fn blows htc has really screwed us here in usa...i was willing to spend 800 for this device and htc doesnt even see this? by the time it comes out here in quadband ...the x1 will be out and not mention the 3g iphone...oh well
Click to expand...
Click to collapse
I don't think HTC cares about America too much any more because it's iPhone territory. As they haven't used their own branding until recently, I think HTC are looking to gain market control and loyalty, and that's easiest where the iPhone hasn't been a huge success.
Praygo said:
We will get the diamond, have to wait for the US version that does the different bands.... wich leads me to my next question. What carrier do you think will get the diamond??? AT&T seems to get all the cool stuff.
Click to expand...
Click to collapse
Again, HTC seem to like doing exactly what Apple are not doing, so they may go for multiple carriers. As far as I'm aware the Touch Diamond, and its branded versions, are launching on every network in the UK. That's the complete opposite of Apple's 'one network per country' policy, and they consequently seem to have dropped it (for example, in Italy).

AGREED 100%!! I have been saying this on my podcast for quite a while.. It is a huge mistake. I am now saying since I just received my Diamond that I took one for the team.. I will post my review as the days go by...
SIGHHHH
Dark Fire said:
I don't think HTC cares about America too much any more because it's iPhone territory. As they haven't used their own branding until recently, I think HTC are looking to gain market control and loyalty, and that's easiest where the iPhone hasn't been a huge success.
Again, HTC seem to like doing exactly what Apple are not doing, so they may go for multiple carriers. As far as I'm aware the Touch Diamond, and its branded versions, are launching on every network in the UK. That's the complete opposite of Apple's 'one network per country' policy, and they consequently seem to have dropped it (for example, in Italy).
Click to expand...
Click to collapse

Kaiser 140? A new Kaiser?

I saw the following url
http://pdadb.net/index.php?m=specs&id=1387
on PDAdb listed as new for Kaiser 140, describing what in essence is the existing Kaiser. I searched this forum for any relevant terms and cannot find anything about it. Is this a new version? Has anybody heard of it?

It is also posted on the main front page of PDAdb.net:
http://pdadb.net/index.php?m=main

You'd probably get more of a response if you posted this in Kaiser general, especially since this isn't software related...

Added UMTS 1700?

That must mean it's for T-Mobile US. I heard T-Mobile was supposed to be getting the Kaiser. and their 3G is 1700 band(in case you didn't already know).

I wonder if that means us AT&T people could buy one and use it roaming on TMO's 3g network.

My apologies for posting in the wrong place! I usually check only the software section, it did not occur to me.
As for cellular networks, they llist GSM850, GSM900, GSM1800, GSM1900, UMTS850, UMTS1700, UMTS1900, UMTS2100.

cbass said:
I wonder if that means us AT&T people could buy one and use it roaming on TMO's 3g network.
Click to expand...
Click to collapse
I wonder if this means it has an updated hardware radio transceiver, and the rest of us are out of luck?
Would this mean there is no way to actually get 1700 through a radio flash like how Emobile's radio works on the current Kaiser without locking it to 1700MHz only, and flashing a Kaiser radio to Emobile won't give it 850/1900/2100?

I don't know, but I'd sure like to see a date on its availability and make sure those specs are real-- I travel a lot to Japan, and I want to switch to T-Mobile here in the states the second 3G gets turned on.
See, I'm with Sprint now but my contract is up September 1st. I'm supposed to be back in Japan sometime in October. My plan was to get the unlocked unbranded TYTN II from NewEgg and put it on T-mobile's flex pay plan until I leave. While I wouldn't have access to the 3G bands, T-Mo gives access to Wi-fi hotspots if you have a certain data plan, and I also have AT&T DSL service-- that gives me access to AT&T's Wi-Fi spots already. So I'm pretty much covered in most places if I need a faster conncection than EDGE.
In Japan, I'd just go with Softbank or Docomo--whichever is easiest to hook up the TYTN II to and keep SMS,MMS, and Internet to.
But after reading Emobile's plans on their site along with knowing T-Mobile USA will flip the switch on 3G on 1700MHz here in Atlanta soon... I may wait.
So will this actually support quad-band GSM/EDGE(850, 900, 1800, 1900) and quad-band HSDPA 3G (850,1900,1700,2100)?

starrwulfe said:
In Japan, I'd just go with Softbank or Docomo--whichever is easiest to hook up the TYTN II to and keep SMS,MMS, and Internet to.
Click to expand...
Click to collapse
Softbank. They're the only ones that support SIMs for rental. So so rates, but you could try to negotiate to a flat-rate plan.
Otherwise, you need to do full-contract w new phone, pull the sim, and then use it in the Kaiser. But why, since Japanese phones are so much better when you're there.

the kaiser, t-mobile, and 3G

Hi everyone--
I have an unmodded, "unlocked" at&t tilt that has a t-mobile gsm sim chip in it. I'm still running the WM6 that came in it, and can't seem to get access to the 3G speeds I know this thing is capable of. I've tried numerous software apps to "force" the phone to go 3G, to no avail. T-Mobile customer "support"--HAA! tells me I need a t-mobile phone to be able to take advantage of the 3G speeds. Needles to say, I feel this is a bunch of malarkey. T-Mobile put out this phone, did they not, and called it the "MDA Vario III"? Is there a rom for the mda that I could flash this thing with so I could get the 3G speeds? Or another rom perhaps? Any suggestions would be most appreciated. Thanks!
tripp
mods: if this post is in the wrong place, please move it where it should be (sorry!)

trippster said:
Hi everyone--
I have an unmodded, "unlocked" at&t tilt that has a t-mobile gsm sim chip in it. I'm still running the WM6 that came in it, and can't seem to get access to the 3G speeds I know this thing is capable of. I've tried numerous software apps to "force" the phone to go 3G, to no avail. T-Mobile customer "support"--HAA! tells me I need a t-mobile phone to be able to take advantage of the 3G speeds. Needles to say, I feel this is a bunch of malarkey. T-Mobile put out this phone, did they not, and called it the "MDA Vario III"? Is there a rom for the mda that I could flash this thing with so I could get the 3G speeds? Or another rom perhaps? Any suggestions would be most appreciated. Thanks!
tripp
mods: if this post is in the wrong place, please move it where it should be (sorry!)
Click to expand...
Click to collapse
Unfortunately, the malarkey is the truth! Because T-Mobile runs its 3G network on a different band than the Tilt is capable of! Sorry, this also effects me as I am a T-Mobile customer using a Tilt as well! My advice is to use Opera mini 4.2 for your internet browsing it is very fast on the Edge network!

The T-Mobile you refer to is European
It does not run on the same 3G as the US T-Mobile. The US T-Mobile uses 1700 Mhz and 2100 Mhz, I believe. The Tilt does not use the 1700 Mhz band. There was a rumor going around that there would be a new version of the Kaiser (KAIS140) that would use the US T-Mobile 3G bands but it was never released for sale. I don't think it will since it is pretty much at the end of the life cycle of the phone. They (HTC) have moved on to newer models with more features. If you would like to use the US 3G and live in an area with 3G, The T-Mobile G1 (HTC Dream) uses T-Mo 3G and has its own section on this forum.

bleh. newer models should still freaking tilt. that is the coolest thing about this phone. and it's pretty solid construction. my friend has had his over a year and its still going strong.

dashmaster1000 said:
Unfortunately, the malarkey is the truth! Because T-Mobile runs its 3G network on a different band than the Tilt is capable of! Sorry, this also effects me as I am a T-Mobile customer using a Tilt as well! My advice is to use Opera mini 4.2 for your internet browsing it is very fast on the Edge network!
Click to expand...
Click to collapse
I thought the Tilt accessed 3G through it's tri band frequencies 850/1900/2100Mhz so that it could connect to most 3G networks worldwide, making it a world business tool for users?

denco7 said:
I thought the Tilt accessed 3G through it's tri band frequencies 850/1900/2100Mhz so that it could connect to most 3G networks worldwide, making it a world business tool for users?
Click to expand...
Click to collapse
True but T-Mobile uses the 1700 for upload and 2100 for download. ATT uses 1900 for both.

Awesome - HD7 on AT&T!

Picked up my HD7 from the local T-Mobile Store, acquired my unlock code, applied successfully and was up and running (Exchange and all) within 30 minutes on AT&T.
T.J.

Why do you want to spend so much of money and use it on edge only network ?

why do you want to ruin his experience since apparently he hasn't noticed yet ...

unlockMe said:
why do you want to ruin his experience since apparently he hasn't noticed yet ...
Click to expand...
Click to collapse
lol (10 chara)

tjy said:
Picked up my HD7 from the local T-Mobile Store, acquired my unlock code, applied successfully and was up and running (Exchange and all) within 30 minutes on AT&T.
T.J.
Click to expand...
Click to collapse
How did you get the unlock code so fast?

tjy said:
Picked up my HD7 from the local T-Mobile Store, acquired my unlock code, applied successfully and was up and running (Exchange and all) within 30 minutes on AT&T.
T.J.
Click to expand...
Click to collapse
So exchange works no problem. How about data connection to the Internet ans speed?

tjy said:
Picked up my HD7 from the local T-Mobile Store, acquired my unlock code, applied successfully and was up and running (Exchange and all) within 30 minutes on AT&T.
T.J.
Click to expand...
Click to collapse
Oh and the tmobile store today told me unless i was a customer they couldnt sell it to me? $449

Biggzz said:
Oh and the tmobile store today told me unless i was a customer they couldnt sell it to me? $449
Click to expand...
Click to collapse
Course they said that. They want the money from the contract/upgrade. Call up corporate and let them know the store would not sell you a phone. There are no restrictions on phones being sold outright, but sometimes, because these stores are not corporate stores, they can enforce their own rules, but reporting them can sometimes make them change their mind.

vikramdhani said:
Why do you want to spend so much of money and use it on edge only network ?
Click to expand...
Click to collapse
how SLOW is edge? Is like like a very bad wifi connection? Hehehe... No really, I want to know.

No smartphone is worth the pain of Edge!

I don't know about at&t, but with t-mobile, edge is like not having an internet connection. About 100 kbps and alot of auto updates time out.

Does AT&T 3G require a special frequency that isn't covered by Quad Band? Or is it that T-Mobile 3G has a special, non Quad Band frequency?

Jonno2343 said:
Does AT&T 3G require a special frequency that isn't covered by Quad Band? Or is it that T-Mobile 3G has a special, non Quad Band frequency?
Click to expand...
Click to collapse
there are two band sets for gsm phones, GPRS/EDGE and UMTS:3G/3G+/3.5G/HSDPA/HUDPA (sometimes these abbreviations are used individually to denote 3G service. This is not correct as they all mean a different type of 3G, the most generic term is UMTS).
Sometimes HTC phones have different band sets for different countries.
HTC HD7 Europe:
* HSPA/WCDMA: 900/2100 MHz
* GSM: 850/900/1800/1900 MHz
HTC HD7 T-mobile USA Version:
* UMTS 2100MHz AWS1700/2100MHz
* GSM/GPRS/EDGE 850/900/1800/1900MHz
For GSM there is no issue, 850 & 1900 are USA, 900 & 1900 are EU, but all the phones cover everything:
http://www.worldtimezone.com/gsm.html
In the USA, UMTS 3G for tmobile is on AWS 1700/2100 only
In the USA other providers use 850 with some using 1900
For example, the HTC Surround on AT&T uses:
* UMTS 2100/1900/850
* GSM GPRS EDGE 850/900/1800/1900
In conclusion:
1. Buying a tmobile HTC in the USA means you can only get 3G signal when using the tmobile network. When travelling abroad you might be able to use 3G, dependent on country.
2. Buying a AT&T HTC in the USA means you can only get 3G signal in the US when using the AT&T network but not on tmobile 3G. When travelling abroad you might be able to use 3G, dependent on country.
3. Buying an HTC HD7 from europe will be able to use neither the tmobile or AT&T network's 3G signal (as AWS 1700/2100mhz is different from normal 2100mhz)
Interestingly, what you may have noticed is that the 2100 3G band is common to all phones, this is also the most widely used 3G band in the world.
Therefore all these phones are fine with 3G everywhere in the world except the USA where the 2 leading GSM networks do not, for some reason, use the 2100mhz band as duplex *
* common question, how is UMTS 2100mhz different from UMTS AWS 2100mhz?
Simple, normal 3G UMTS 2100mhz is duplex (i.e. up and down link use the same frequency). In AWS, the up and downlink use different frequencies, AWS 1700/2100mhz means that tmobile uses 1710-1755 Mhz down & 2110-2155 MHz Up.
Only two networks in the world use AWS, tmobile in the USA and WIND in Canada.
in the rest of the world, where tmobile has a presense, it uses the "normal" 2100 3G band!

Wow, thanks very much colonel, that's an excellent explanation!!
So the T-Mobile HD7 is basically the Europe version with an additional radio (or whatever) to connect to the T-Mobile 3G network?

Jonno2343 said:
Wow, thanks very much colonel, that's an excellent explanation!!
So the T-Mobile HD7 is basically the Europe version with an additional radio (or whatever) to connect to the T-Mobile 3G network?
Click to expand...
Click to collapse
it has AWS 1700/2100mhz instead of the EU 900mhz
it retains the normal 2100mhz, although this is useless in the USA
rgds

colonel said:
it has AWS 1700/2100mhz instead of the EU 900mhz
it retains the normal 2100mhz, although this is useless in the USA
rgds
Click to expand...
Click to collapse
Excellent, thanks for the clarification!
It seems that in South Africa all 3G goes over the 2.1GHz frequency but some operators are starting with 900MHz so all will be fine.
Can't wait to get one now!

vikramdhani said:
Why do you want to spend so much of money and use it on edge only network ?
Click to expand...
Click to collapse
Because its the carrier my work pays for Im mostly connected via Wi-Fi anyway.
T.J.

tissot201 said:
How did you get the unlock code so fast?
Click to expand...
Click to collapse
http://www.HTCimeiUnlock.com/
Had the code in 10 minutes. Was $25 because of the new device I assume, they advertise 15.
T.J.

[Q] HTC Vivid on Tmobile 3G/4G?

Hi all,
I was wondering whether there would be any way to flash a custom modem or a ROM that would unlock the LTE bands so that the Vivid can access HSPA on Tmobile's network?
From what Ive read, the AT&T GS2 Skyrocket and the AT&T Galaxy Note have been unlocked through this method and Im not sure why the Vivid cant be since it shares much of the same specs between it and the Skyrocket & G-Note
Thanks

dante58 said:
Hi all,
I was wondering whether there would be any way to flash a custom modem or a ROM that would unlock the LTE bands so that the Vivid can access HSPA on Tmobile's network?
From what Ive read, the AT&T GS2 Skyrocket and the AT&T Galaxy Note have been unlocked through this method and Im not sure why the Vivid cant be since it shares much of the same specs between it and the Skyrocket & G-Note
Thanks
Click to expand...
Click to collapse
No that isn't possible, tmobile and att have different bands. I know that you could use a sim card on the vivid, but you wouldn't get the same speed.
Sent from my HTC PH39100 using xda premium

IIRC you can use a T-Mobile phone on ATT and get 2G but can't use ATT on TMO.
Sent from my HTC PH39100 using XDA

doktor buknasty said:
No that isn't possible, tmobile and att have different bands. I know that you could use a sim card on the vivid, but you wouldn't get the same speed.
Sent from my HTC PH39100 using xda premium
Click to expand...
Click to collapse
The LTE band can be used on Tmobile to get 4G download speeds. As visible here:
http://forum.xda-developers.com/showthread.php?t=1507825
OP is asking if this is possible for the Vivid, need a Tmobile radio to flash. Would be great if someone could work on it.

twolves14 said:
The LTE band can be used on Tmobile to get 4G download speeds. As visible here:
http://forum.xda-developers.com/showthread.php?t=1507825
OP is asking if this is possible for the Vivid, need a Tmobile radio to flash. Would be great if someone could work on it.
Click to expand...
Click to collapse
No. The LTE Band will never work on T-Mobile's GSM. What allows the Note and Skyrocket to work is that they have the pentaband hardware GSM modem and flashing a different software modem enables access to those frequencies on GSM.
Sent from my HTC PH39100 using xda premium

dante58 said:
I was wondering whether there would be any way to flash a custom modem or a ROM that would unlock the LTE bands so that the Vivid can access HSPA on Tmobile's network?
Click to expand...
Click to collapse
twolves14 said:
The LTE band can be used on Tmobile to get 4G download speeds. As visible here:
http://forum.xda-developers.com/showthread.php?t=1507825
OP is asking if this is possible for the Vivid, need a Tmobile radio to flash. Would be great if someone could work on it.
Click to expand...
Click to collapse
Uh yeah, it's going to be hard to get the LTE bands on the LTE radio on the phone to pick up UMTS/HSPA signal.
There's a reason why phones are usually advertised like:
GSM/EDGE 850/900/1800/1900MHz
UMTS/HSPA 850/1900/2100MHz
LTE AWS700MHz
They kiiiinda aren't interoperable. Note how you can't connect to UMTS 900MHz or use a Telstra LTE phone and get 1800MHz 2G service if the phone doesn't have that band in its 2G spectrum.
I remember reading about the pentaband radios having UMTS/HSPA 850/900/1700/1900/2100MHz. That's still pretty different than your standard quad-band GSM radio.

It is absolutely possible...given that the specs on GSM Arena and Phonescoop are right...
700 MHz Class 17, 1700/2100 MHz
It has the correct pair for Tmobile.
The only thing is whether or not you can flash the radio with a Tmobile equivalent (Amaze?) radio.
What happened to all the hardware hackers on this forum? It seems as if no one knows ANYthing about the interworkings of a network anymore.
Anyhow, the phone having the bands and knowing what to do with them are 2 different things. For example. Stereo FM 101.9 Mhz vs. HD(Digital)-FM 101.9...they're both on the same band/frequency but are utilized differently...
The signals are still transmitted on the same frequency, however the radio itself doesn't know how to decode/interpret the HD (Digital) signal...unless it is told how to do so.
The only place that this analogy differs is when it comes to actual comparison of FM receivers and Cellular phones. With FM receivers it actually requires a decoder to understand the digital signal being broadcasted...Cellular however just needs to be flashed and voila, you've got HSPA...
So. Yes. It is %100 possible.

NO NO NO NO.
LTE bands do NOT equal GSM. Not going to happen. They are physically different receivers for lack of a better phrase. There is no way to do this without physically changing hardware. Also, you realize T-Mobile's "1700" frequency does not actually mean 1700 on the dot. They use a different subset of actual radio bands than AT&T's 1700 LTE. As in 1721-1727 or some such vs 1781-1793 or something. I don't know the actual frequencies, but you get the drift.
Sent from my Lumia 900 using XDA Windows Phone 7 App

It is absolutely possible. No question about it.

Then do it. For one, there is no compatible modem to flash. Two, it isn't possible.
Sent from my Lumia 900 using XDA Windows Phone 7 App

Hand is hitting my face so hard right now.
RavenII, if it's so possible, then why don't you do it? If you can't, give a large donation to one of our developers and tell them to do it.
I, and many others here are blatantly telling you it's not possible for clear reasons.
The Galaxy Nexus has a PENTABAND UMTS/HSPA "3G" radio. 850/900/1700/1900/2100. That's why it can access TMobile's 3G and faux-G. We here, on the HTC Holiday, have a tri-band 3G radio.
DIRECTLY from your sources at GSM ARENA and PHONESCOOP. I've added HTC.com for good measure:
2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 1900 / 2100
4G Network LTE 700 MHz Class 17 / 1700 / 2100
GSM 850 / 900 / 1800 / 1900
LTE 700 / 1700
WCDMA 850 / 1900 / 2100
LTE (AWS/700), HSPA+/UMTS Tri-band (850/1900/2100MHz), and tri-band GSM/GPRS/EDGE (850/900/1800/1900MHz)
What? I'm sorry, I couldn't hear you over the fact that "3G network/WCDMA/HSPA+/UMTS" doesn't have 1700MHz. Oh wait, I couldn't hear you over the fact that TMobile's faux-G is not based on LTE, nor is it 4G (big hint: it's 3G HSPA-based service ).
GSM Arena and Phonescoop also do not account for the of LTE bands supported by the Vivid. Each region of the Holiday pretty much only supports the LTE band in that region. Rogers and ATT only supports AWS700, Telstra only supports 1800, etc.

I'm glad I'm not the only one to retain my senses about this. Leave it to a fellow Saab fan to explain it correctly.
Sent from my Lumia 900 using XDA Windows Phone 7 App

Ok...I really didn't want to do this since I HATE spoon feeding people on forums...but here goes. And try to keep up because I'm only going to dumb it down so much.
What you guys are mistaking for "Bands"...really ARE NOT BANDS....there is NO SUCH THING as an LTE band...or HSPA+ band...
There are Network types ...LTE, HSPA+, -Insert other modulation/channeling scheme here-, etc.
There are Frequencies (which are actually specific ranges but for the sake of confusion, they're referred to as the following 700, 800, 850, 900, 1700, 1900, 2100...etc.) By the way...all those frequencies fall under the UHF band...
So far we've established that there are Network types...and different frequencies...are you still with me? Any questions?
Ok, onward.
There exists something called an SDR or Software Defined Rado...it has the ability to receive and transmit on certain frequencies...It's the software that defines how much of that frequency to use per channel (1Mhz, 25khz, etc.), what range of frequencies to use, how to use them, how much power to use while transmitting, among MANY other things (what frequency to send on, which to receive on, etc.)...That's how they came up with "Software defined radio"
If you look at the Product Brief for the MSM8X60/APQ8060 you should notice all of the frequencies that these specific chips support...
I really don't want to lose you guys, still following?
You might notice that the APQ8060 doesn't have a WWAN modem...but what does THAT mean? It means that it needs something like ohhhhh let's say the MDM9200...FINE! Here's one more spoon full
Reader to me: But RavenII...you're being a condescending ****, and we still don't know what the hell your point is...you're spewing all this **** like you're some know it all...
Me to Reader: There there grasshopper. I will get straight to it...
With all of the information I've given you...you should be able to see that when you see something like "LTE (AWS/700), HSPA+/UMTS Tri-band (850/1900/2100MHz), and tri-band GSM/GPRS/EDGE (850/900/1800/1900MHz)"...it means the radio is...
Being told to use LTE Standards (modulation, channeling, frequency steps, etc.) on AWS/700 (which if they're using AWS to signify Band IV...it would in turn mean 1700/2100), HSPA+/UMTS Standards on 850/1900/2100MHz...etc.
Still reading?
When I say that it is %100 possible...I'm saying that with software or "flashing the radio"...you can effectively change/tell what the chip should do (in this case either an MSM or MDM) with the frequencies it's capable of transmitting/receiving on. That's it.
Aus_Azn: I really hope you didn't leave a hand print on your face...
Thank you, good night.
One last thought: I never said that I would do it, I said that it's possible...

Here's the real simple way to explain it: it is theoretically possible to do but no one outside of HTC has the skill or proprietary code to do it.
So for all intents and purposes, impossible. It will not now nor ever happen.
Also, while the chip may support all bands from the factory that initially fabricated the chip, it may be locked at a firmware level (not a software radio, but actual ROM on the physical chip) that a software based radio cannot affect. This is why you can't just flash a T-Mobile software radio on another AT&T s-off device and have it work. The physical chip itself DOES NOT SUPPORT THE FREQUENCY NEEDED due to changed firmware configuration.
Is that condescending enough for you?
Sent from my HTC One X using xda premium

Let's see, how can I put this...You're still wrong. It's still possible.
I don't even own a Vivid so I'm no longer going to post to this thread...but I will tell you this...everyone once told me that blackberrys could not have data without having the BIS (Blackberry specific plan)...and guess what. I'M the reason that people are hacking them away. I was the first one to figure it out and prove everyone wrong. While I don't have a phone that I need to convert for T-Mobile, you can bet, that once there's a phone that I want to use on T-Mobile's network...I'll more than likely find a way.
Farewell.

@totally off topic
RavenII I think you're going on the right track here. I'm already convinced by what your saying.
peaceout

What RavenII is saying does have a good base logically because it has been done before for a very similar set of hardware to the raider. The ATT Galaxy S2 Skyrocket and the ATT Note LTE are both phones featuring very similar processor and modem as the Raider. The APQ8060 and MDM9200 (i think).
Samsung released devices with this modem running on all sorts of bands 1700, 850, 1900, 2100 and even LTE on 1700 and 700.
The ATT Versions of the devices do not feature UMTS in AWS range however people have simply flashed the modem from the T-Mobile version of the device which doesn't have LTE and the ATT LTE devices actually started working on UMTS AWS bands. Various modems give various degrees of success but it is possible and has been confirmed many many times over.
Here is the thread for the ATT Skyrocket. You will find people doing the same thing on ATT Galaxy Note LTE.
http://forum.xda-developers.com/showthread.php?t=1507825

You guys are funny, now I can't wait to get my Vivid which I just received today running on T-Mobiles "4g". The funny thing about this is when i very first started reading this thread and saw Mr. buknastys' reply, I was thinking "That is absolutely not true". Now I'm not going to go into detail or try and prove any points, as Raven has done a perfectly fine job proving his point and answering the OPs question. Bottom line; the two readers are absolutely wrong and Raven is absolutely right. Also one last thing, I love how suddenly a firmware "lock" is something of an obstacle, yet we have gained S-Off on nearly every HTC bootloader out there. Just sayin..

motoxxx138 said:
You guys are funny, now I can't wait to get my Vivid which I just received today running on T-Mobiles "4g". The funny thing about this is when i very first started reading this thread and saw Mr. buknastys' reply, I was thinking "That is absolutely not true". Now I'm not going to go into detail or try and prove any points, as Raven has done a perfectly fine job proving his point and answering the OPs question. Bottom line; the two readers are absolutely wrong and Raven is absolutely right. Also one last thing, I love how suddenly a firmware "lock" is something of an obstacle, yet we have gained S-Off on nearly every HTC bootloader out there. Just sayin..
Click to expand...
Click to collapse
I really didn't mean to come off as a **** in this thread, but it seems as if though people have forgotten about actual hacking and everything has moved to "Supercharging" and theming...it's saddening, I come from a time where there was no such thing as impossible.
...I encourage you to try, but do so with a lot of caution...because the fact of the matter is...you can brick your device...
Happy hacking.

THANK YOU!!!
RavenII said:
I really didn't mean to come off as a **** in this thread, but it seems as if though people have forgotten about actual hacking and everything has moved to "Supercharging" and theming...it's saddening, I come from a time where there was no such thing as impossible.
...I encourage you to try, but do so with a lot of caution...because the fact of the matter is...you can brick your device...
Happy hacking.
Click to expand...
Click to collapse
I would just like to say thank you to Raven as I now have a AT&T Vivid and have successfully placed it on the T-mobile 3G network working 100% of the time. I will be putting together a full tutorial on how to do this shortly as it was indeed a challenge. I have been reading these forums for awhile and Raven your post has by far been one of the most beneficial and inspiring ones...thanks for sticking it out on these forums...few do these days. I actually just joined this forum after months of reading because of this post. I figure i too will provide feedback. I am actually a Tech Manager w/ Sprint. I work on these things everyday in other words....hints why I actually have a T-mobile phone lol. Not saying T-mobile is the best but you at least get exactly what you pay for and they are honest about coverage haha. Anyways..back on topic...the HTC Vivid is an interesting phone to root even and get the S-off. It is needed in order to get the sim unlocked. You have to do a combo of the rooting kit "Vivid_All_in_One_kit_v2.2" posted on another section and the "ControlBearRelease_holiday_ICS_WIN" (if your running Win 7). After you do what they call the "wire trick" (basically short the sim reader temporarily to allow temp access to flash) you can get the sim lock off. After that it is simple trial and error with modem flashes from various tmobile devices onto the HTC Vivid to get the 3G up and going. Mine actually kicked on with the AT&T radio flashed at first but I only had coverage in certain areas. Basicly it will depend alot on your local towers. Believe it or not...ALL CELL TOWERS ARE LEASED FROM VARIOUS COMPANIES LIKE SONY ERICSON WHICH MAINTAIN THEM ALL ALMOST!!...therefore it is very dependent on the towers in your area which radios are likely to work if not the stock modem on the device. It depends on what lease and roaming agreements are in place in your region....again...I WORK ON PHONES EVERYDAY FOR SPRINT...know a little about all that stuff...trust me...i have people yelling everyday about not having this or that when most of it is the carrier hasnt signed an agreement with Kyocera or whom ever to support that device or the lease contract has expired and will be resigned in a few days....bottom line is ....if the phone has a radio chipset that supports multibands and frequencies it is almost always possible to do what ever you would like with it. As far as firmware lock....too funny...those do not work on Android devices as the chipsets were intentionally designed to be unviersal to all carriers to cut manufacturing costs...much like in automotives where Mazdas and Fords use the same parts...just a reference. Anywho....It really is possible...it just takes research and a TON of time sometimes but that is the point of hacking....most would have said the Xbox Kinect wouldnt have been able to been hacked or the Wii remote seeing as both those use internal chips that range in the thousands if sold for other purposes. Long story short....happy hacking and Thanks to all of you for a great discussion forum.