What's With The Quad band? - G1 Q&A, Help & Troubleshooting

Sooo... after looking about the HTC website, I wanted to check out my G1 specs...
I noticed the site said
Quad-band GSM/GPRS/EDGE:
*850/900/1800/1900 MHz
Click to expand...
Click to collapse
Is that true on the U.S. Phone? Or is there an actual "Quad Band" G1 being sold?
I know this has probably been discussed a ton on this fourm, I just wanted to ask my own way! Thanks
-b3orion

Do you mean Dream? As in xda-developers > HTC Dream: G1 > G1 Q&A

I'm not quite sure what the question is here.
BUT yes the G1 is a Quad Band phone with the ability to run on those 4 different frequencies.
Most data devices IE: Windows mobile phones, Android phones, Blackberry's, etc. are Quad Band devices.

it IS quad band, however it doesnt do HSDPA/HSPA on all 4 freq.'s, dont bother getting excited, its only quad band for edge, lol.

Oh, Ok...
it IS quad band, however it doesn't do HSDPA/HSPA on all 4 freq.'s, dont bother getting excited, its only quad band for edge, lol.
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Click to collapse
That makes sense... Thanks for clearing that up, jmhalder.

So does this basically mean no HSDPA 7.2 Mbit goodness for G1 users in the US? I've been trying to find a definitive answer on this since I live in the Philly region that is currently covered by "Very fast mobile web"

jouva said:
So does this basically mean no HSDPA 7.2 Mbit goodness for G1 users in the US? I've been trying to find a definitive answer on this since I live in the Philly region that is currently covered by "Very fast mobile web"
Click to expand...
Click to collapse
No, it means that it will only do 3G on the service provider for which it has compatible HSPA frequencies.

Related

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 ?
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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

[Q] will captivate be eligible for upgrade to LTE/4G?

Will the captivate be one of the devices to be eligible for the software upgrade for LTE/4G as noted here, "...any of your AT&T LTE-upgradable devices will be able to connect to LTE after performing a simple software upgrade."
http://www.wireless.att.com/learn/why/technology/4g-lte.jsp
Hrm.. well it says "selected markets" which translates to NOT COLORADO SPRINGS
But I'd imagine it'd just be a modem upgrade.... but could be hardware dependent no?
bump 10char
chasesavestheday said:
Will the captivate be one of the devices to be eligible for the software upgrade for LTE/4G as noted here, "...any of your AT&T LTE-upgradable devices will be able to connect to LTE after performing a simple software upgrade."
http://www.wireless.att.com/learn/why/technology/4g-lte.jsp
Click to expand...
Click to collapse
From what I understand the LTE network will be somewher ein the 700 MHZ bands and as that is outside what the antenna for the captivate can do, the answer is a sad no.
DarrellRaines said:
From what I understand the LTE network will be somewher ein the 700 MHZ bands and as that is outside what the antenna for the captivate can do, the answer is a sad no.
Click to expand...
Click to collapse
Agreed. Could always grab a rom that supports H. Pretty much 3.5G. Anyways att is struggling with 3G so I would say 12th of never on a 4G network.
Well as far as I know the physical modem itself would have to be different as it is not just the MHz that it runs at.

At&t + T-Mobile Merger Hurts Potential US G2x Buyers

Hi alls, I wish I had better news to bring. The good news is, as expected, the 2X runs stock Froyo.
Now the kicker: as you are all probably aware, At&t has gobbled up T-mobile. This means that when the transition is complete (expected a year to 18 months from now) At&t will drop T-Mobile's 3G bands to EDGE.
It may not affect some owners but for me, I usually keep a device until a big hardware refresh comes about- like a quad-core chip. I'm skipping the 2x for the Galaxy II or the Optimus 3D. I was on the verge of owning this...
Luckily the normal 2X do support UMTS 1900 (one of the 3G bands AT&T use), that's why I am consider buying it off contract from other place and use it on AT&T
jackleung said:
Luckily the normal 2X do support UMTS 1900 (one of the 3G bands AT&T use), that's why I am consider buying it off contract from other place and use it on AT&T
Click to expand...
Click to collapse
Let me understand: do you mean the non-US version of the 2x, the off-contract US retail model, or both? Thanks!
It's been reported that the G2x will support T-Mo *and* AT&T bands:
http://www.anandtech.com/show/4231/lg-optimus-2x-coming-to-usa-as-tmobile-g2x-
UMTS/HSDPA/HSUPA Support 1700 / 2100 (AWS) / 1900 / 850 MHz
So you can rest assured that T&A-Mobile will support the bands on your phone right through to the bitter end of HSPA over AWS, right?
Ha! I was spying Engaget & Giz all afternoon yesterday & the announcement was made @ Anand...! Thanks for the heads up!
at&t hasn't officially bought T-Mobile yet -_-
An acquisition of this magnitude might not even be legal, it has to be approved by the FCC and the DOJ
Just checked the specs on this new phone on the T-Mobile spec sheet that was posted on T-MO News ad and that device supports both T-Mobile and AT&T's 3G Networks. I had to recheck it over 10 times during the day in case it was a miss print and they are still posted.
Has anyone else found any news that is different???
vinnyjr said:
Just checked the specs on this new phone on the T-Mobile spec sheet that was posted on T-MO News ad and that device supports both T-Mobile and AT&T's 3G Networks. I had to recheck it over 10 times during the day in case it was a miss print and they are still posted.
Has anyone else found any news that is different???
Click to expand...
Click to collapse
Yes, this says different. (Dang it, I can't post links. Search on Engadget.com for "T-Mobile G2x lacks quadband HSPA+, shatters dreams")
That said, I'm still curious to find out if anybody else has tried the the 2X or the G2x on AT&T yet. I'm not smart enough to understand what the lack of 850 3G means. Is that an upload speed? So would I be able to download zippily on the 2100 Mhz band but my upload would take forever?
Seeking original poster or the multitudes smarter than me for answer.
Norlos said:
Yes, this says different. (Dang it, I can't post links. Search on Engadget.com for "T-Mobile G2x lacks quadband HSPA+, shatters dreams")
That said, I'm still curious to find out if anybody else has tried the the 2X or the G2x on AT&T yet. I'm not smart enough to understand what the lack of 850 3G means. Is that an upload speed? So would I be able to download zippily on the 2100 Mhz band but my upload would take forever?
Seeking original poster or the multitudes smarter than me for answer.
Click to expand...
Click to collapse
Further adding:
I'm interested in potentially buying the Optimus 2X (900/1900/2100 UMTS) not the G2x (1700/2100 UMTS). Anybody able to explain why the 2X may not work with AT&T, or share experience with it working?
The 2x will give you 3G on only the 1900 band with At&t, and not on the 850 band. So your 3G coverage will be worse than phones designed for the carrier. It will not get 3G on T-mobile.
You may as well just wait for the "Thrill 4G".
Sent from my Nook Color!
what are the speed test for this phone on tmobile?
and so if it dosent get 3g will it be getting edge?
Just in case someone finds this thread again, the G2X DOES NOT support *any* AT&T 3G frequencies:
http://www.phonedog.com/2011/04/27/...-quad-band-hspa-plus-won-t-work-with-at-t-3g/
It was a screw-up by T-Mobile to say it did.

vivid in australia

I just sold my HTC inspire to get a vivid..
In Australia our 3g is 850 MHz and LTE is 1800 MHz...
If I buy an att vivid, will I be able to access these frequencies? My current phone is the att inspire.
There is a leaked pic of an Australian vivid on my carrier... Can anyone tell if its the same model as att one??
I don't wanna buy the wrong model....
Here is the pic..
http://m.cnet.com.au/htc-holiday-to-be-first-telstra-4g-smartphone-339323146.htm?redir=1
You will get the 3g speed but not LTE. AT&T LTE is 700MHz and the Vivid radio only supports the 700Mhz frequency.
Really? What are the numbers shown in these specs?
http://mobiles.maxabout.com/att/htc-vivid
It says 1800 MHz?
Is.there a model which will work in my area?
psupernak said:
Really? What are the numbers shown in these specs?
http://mobiles.maxabout.com/att/htc-vivid
It says 1800 MHz?
Is.there a model which will work in my area?
Click to expand...
Click to collapse
not 1800mhz LTE for the VIVID.
why dont you get the HOLIDAY which is the same phone but made to work with your carrier?
really? Never new it was... Ill look it up now
Pirateghost- can you post a link to specs saying LTE 180 MHz? i cant find anything..
psupernak said:
Pirateghost- can you post a link to specs saying LTE 180 MHz? i cant find anything..
Click to expand...
Click to collapse
Lte on at&t is 700 MHz. This is documented in many places.
Sent from my SAMSUNG-SGH-I727
Pirateghost said:
Lte on at&t is 700 MHz. This is documented in many places.
Sent from my SAMSUNG-SGH-I727
Click to expand...
Click to collapse
Yes I know America lte is 700 MHz, and Australia is 1800 MHz.....
You said use the raider as its for Australia....
I asked I'd you could show me where it shows the specs for the raider showing 1800 MHz...
ive looked and seem to get the same specs for the vivid and the raider...?
they both say LTE 700/1700/2100 MHz??
vivid-
http://www.phonearena.com/phones/HTC-Vivid_id6516
raider-
http://www.gsmarena.com/htc_raider_4g-3958.php
psupernak said:
Yes I know America lte is 700 MHz, and Australia is 1800 MHz.....
You said use the raider as its for Australia....
I asked I'd you could show me where it shows the specs for the raider showing 1800 MHz...
Click to expand...
Click to collapse
IIRC one of the Canadian carriers has an 1800MHz LTE spectrum. Bell, I think. Might be wrong, though.
Sent from my HTC PH39100 using XDA Premium App
http://www.gsmarena.com/compare.php3?idPhone1=3958&idPhone2=4302
1800mhz is for GSM only AKA 2G/EDGE
Aus_Azn said:
IIRC one of the Canadian carriers has an 1800MHz LTE spectrum. Bell, I think. Might be wrong, though.
Sent from my HTC PH39100 using XDA Premium App
Click to expand...
Click to collapse
Thanks. Could you help out with some questions in my pm?
Pirateghost said:
http://www.gsmarena.com/compare.php3?idPhone1=3958&idPhone2=4302
1800mhz is for GSM only AKA 2G/EDGE
Click to expand...
Click to collapse
Cheers.. but from your link it looks like the raider is same as vivid,but can also do 700 MHz lte???
Is this correct?
Rogers uses the same bands as AT&T
and it looks like Bell is using 700/1700/2100 for LTE according to their websites
psupernak said:
Cheers.. but from your link it looks like the raider is same as vivid,but can also do 700 MHz lte???
Is this correct?
Click to expand...
Click to collapse
according to that link, they are the same, but NEITHER of them list LTE as running on 1800mhz
http://en.wikipedia.org/wiki/Cellular_frequencies
Pirate. Initially you said I should get.the holiday. Can you post a link showing the specs of this phone? If it operates lte on 1800 MHZ then ill buy it.
I've read that my carrier uses 1800 MHz frequency.. but also seen 1700 figure used....
My carrier is telstra in Australia.
This link explains our lte structure. http://m.zdnet.com.au/telstra-s-4g-lte-goes-public-339323055.htm
Can someone confirm to me that when they speak of lte for usb dongles, it also applies to mobile phones?
I ask because telstra has just released 4g lte for usb wireless but we dont have any lte phones available yet...
Which is why I wanna get one from america.....
psupernak said:
Pirate. Initially you said I should get.the holiday. Can you post a link showing the specs of this phone? If it operates lte on 1800 MHZ then ill buy it.
I've read that my carrier uses 1800 MHz frequency.. but also seen 1700 figure used....
My carrier is telstra in Australia.
This link explains our lte structure. http://m.zdnet.com.au/telstra-s-4g-lte-goes-public-339323055.htm
Can someone confirm to me that when they speak of lte for usb dongles, it also applies to mobile phones?
I ask because telstra has just released 4g lte for usb wireless but we dont have any lte phones available yet...
Which is why I wanna get one from america.....
Click to expand...
Click to collapse
Don't bother getting one from here; looks like Telstra uses a very unique LTE band. 1800 means 1800, not 1700, so the Bell Raider won't work. Just wait for it when it comes out. The leaked ROM notes that it's to be called the "Velocity 4G", so keep an eye out for it instead of trying to fish on the international market.
LTE for USB dongles is using the same LTE as the mobile phones. It's on its way. It was like that on Verizon too, with the dongles first, then the rollout of phones.
@Pirate: Has HTC released an unbranded Raider? I didn't even know that existed already.
Aus_Azn said:
Don't bother getting one from here; looks like Telstra uses a very unique LTE band. 1800 means 1800, not 1700, so the Bell Raider won't work. Just wait for it when it comes out. The leaked ROM notes that it's to be called the "Velocity 4G", so keep an eye out for it instead of trying to fish on the international market.
LTE for USB dongles is using the same LTE as the mobile phones. It's on its way. It was like that on Verizon too, with the dongles first, then the rollout of phones.
@Pirate: Has HTC released an unbranded Raider? I didn't even know that existed already.
Click to expand...
Click to collapse
i was under the impression that there would be some Holidays running around in the eastern hemisphere
Pirateghost said:
i was under the impression that there would be some Holidays running around in the eastern hemisphere
Click to expand...
Click to collapse
There doesn't seem to be any concrete specs on the holiday. All I know is the leaked telstra pic shows a HTC holiday... I'm wondering if its a unique one or a vivid with different radio band....
psupernak said:
There doesn't seem to be any concrete specs on the holiday. All I know is the leaked telstra pic shows a HTC holiday... I'm wondering if its a unique one or a vivid with different radio band....
Click to expand...
Click to collapse
not sure, but i do know that it runs sense 3.5 instead of sense 3.0 like on the vivid. LOL
Pirateghost said:
not sure, but i do know that it runs sense 3.5 instead of sense 3.0 like on the vivid. LOL
Click to expand...
Click to collapse
It sounded like you knew a bit more about the holiday when you recommended it...

[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.

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