US 3G Bands? - Touch HD General

I have a GSM Touch Diamond and there's no way to use the US 3G even if you have a 3G sim, we discussed it in the Diamond forum and people said it's just not possible. Is this the case with the Blackstone or are you able to use 3G in the US?

if you use a 3 sim you can get service if 3 got a roaming agreement with an usa isp
if the usa isp don't use 3g services on the hz's the rest of the world use you can only get
2g or 2.5g (edge) service

the Telstra Touch HD version (Blackstone - T8285) uses at&t's 850 3G band. it works quite well in the US as long as one is in an area that uses more 850 3G towers vs. 1900 3G towers.

cortez.i said:
the Telstra Touch HD version (Blackstone - T8285) uses at&t's 850 3G band. it works quite well in the US as long as one is in an area that uses more 850 3G towers vs. 1900 3G towers.
Click to expand...
Click to collapse
So it'll be the same 3G and the same speed as if it were an AT&T phone (like iPhone etc.)?

rpimps said:
So it'll be the same 3G and the same speed as if it were an AT&T phone (like iPhone etc.)?
Click to expand...
Click to collapse
it's 3G from at&t, period. as i mentioned in my post, the Telstra HD is limited to using at&t's 850 3G band. at&t uses both 850/1900 to deliver 3G. if you're in an area that uses only/more 1900 3G towers then you may not have 3G access. i believe Phoenix, AZ is an example. can't comment on the speed with an at&t phone because i don't own one. the pic below is an example of the speed i get with my Telstra HD on at&t.

cortez.i said:
it's 3G from at&t, period. as i mentioned in my post, the Telstra HD is limited to using at&t's 850 3G band. at&t uses both 850/1900 to deliver 3G. if you're in an area that uses only/more 1900 3G towers then you may not have 3G access. i believe Phoenix, AZ is an example. can't comment on the speed with an at&t phone because i don't own one. the pic below is an example of the speed i get with my Telstra HD on at&t.
Click to expand...
Click to collapse
If there's 850 towers but more 1900 towers then the 3G just won't work at all? It won't just connect to the 850 ones?
I live in Houston, TX and commute between there and Austin, TX.

rpimps said:
If there's 850 towers but more 1900 towers then the 3G just won't work at all? It won't just connect to the 850 ones?
Click to expand...
Click to collapse
i can't say if it won't work at all. for example, if there are 100 towers and 95 are 1900 and 5 are 850 and, you live near an 850 tower, (theoretically) you should get 3G access. using your example, i would say you'd be connected to Edge more often than 3G.
rpimps said:
I live in Houston, TX and commute between there and Austin, TX.
Click to expand...
Click to collapse
if i remember correctly, there's a user here named tucomora who lives in Houston and has a Telstra HD. i believe he indicated that Houston may have more 1900 towers than 850s. but, as you may know, at&t is adding more 850 towers nation wide. i suggest you send tucomora a PM to get his perspective on using the HD in south texas.
http://forum.xda-developers.com/member.php?u=251104

I looked for tucomora, tucamora, tacamora, couldn't find anyone.
Would you not be able to go into the phone's settings and disable the 1900 band or something? I have a Diamond on AT&T now and it's between upgrading to an HD or waiting another month and signing up with Sprint for the Touch Pro 2 (or Palm Pre now) and then just looking like an idiot carrying 2 phones around.

rpimps said:
I looked for tucomora, tucamora, tacamora, couldn't find anyone.
Would you not be able to go into the phone's settings and disable the 1900 band or something? I have a Diamond on AT&T now and it's between upgrading to an HD or waiting another month and signing up with Sprint for the Touch Pro 2 (or Palm Pre now) and then just looking like an idiot carrying 2 phones around.
Click to expand...
Click to collapse
why would you want to disable the UMTS 1900 3G band? if there are no 850 3G towers, you won't get 3G service you'll get EDGE instead. my phone options are set to Auto for GSM and UMTS and if there are no 850 3G towers it switches to EDGE. simple as that, not a big deal for me (and not implying that it is to you). you can change the GSM/UMTS settings to seek/use only 850/1900 3G towers, but in my experience, if the HD doesn't find an 850 3G tower, i won't have a phone signal, period. if you're in the US and want a HD with 3G capabilities, you get the Telstra Touch HD and accept the fact that having only one US 3G band (e.g., 850 3G) will limit 3G access in some areas.
link to user i was referring to turcomora.

cortez.i said:
why would you want to disable the UMTS 1900 3G band? if there are no 850 3G towers, you won't get 3G service you'll get EDGE instead.[/URL]
Click to expand...
Click to collapse
If there are 850 towers but just not as many as 1900 towers, you could disable 1900 so it only connects to the 850 towers and then you'd have 3G, right? That's what I was saying. I have EDGE on the Diamond but it's so slow it makes me not want to use it most of the time.

rpimps said:
If there are 850 towers but just not as many as 1900 towers, you could disable 1900 so it only connects to the 850 towers and then you'd have 3G, right? That's what I was saying. I have EDGE on the Diamond but it's so slow it makes me not want to use it most of the time.
Click to expand...
Click to collapse
uh, no it doesn't work like that. the phone is going to lock onto the strongest signal possible. if it sees a stronger 1900 signal, that's what the phone will use. if you (could) disable the 1900 band and you're in an area with 1900 towers, you would not have ANY signal at all, no phone, no data. based on your level of concern, wait for the at&t TP2 (or whatever it's called); then you'll have no worries about 3G access.

Thanks for all the help, I just ordered the T8285 so I'll let you know how it is. Will I be able to use all my Diamond accessories with the HD (extra batteries, chargers, etc.)?

rpimps said:
Thanks for all the help, I just ordered the T8285 so I'll let you know how it is. Will I be able to use all my Diamond accessories with the HD (extra batteries, chargers, etc.)?
Click to expand...
Click to collapse
chargers yes, batteries no. The Telstra ROM that comes with your device will have its internet connection settings locked to Telstra (which we can't obviously use in the US). this means you won't be able to access the internet from your phone until you add at&t's connection settings. i never researched methods to add at&t's connection settings so i don't know if they exist. i flashed HardSPL to my device so i could install a custom ROM. i suggest you click the link in my signature and learn about flashing new ROMS. hope you enjoy your device!

Thanks. I looked at some accessories on ebay and they all say for t8282 (for example http://cgi.ebay.com/o569-2in1-Deskt...ries?hash=item3352c2143b&_trksid=p3286.c0.m14 ), are the batteries for the 8282 and the 8285 different or will this work?

rpimps said:
Thanks. I looked at some accessories on ebay and they all say for t8282 (for example http://cgi.ebay.com/o569-2in1-Deskt...ries?hash=item3352c2143b&_trksid=p3286.c0.m14 ), are the batteries for the 8282 and the 8285 different or will this work?
Click to expand...
Click to collapse
bumpppppppppppppp, anyone know?

rpimps said:
Thanks. I looked at some accessories on ebay and they all say for t8282 (for example http://cgi.ebay.com/o569-2in1-Deskt...ries?hash=item3352c2143b&_trksid=p3286.c0.m14 ), are the batteries for the 8282 and the 8285 different or will this work?
Click to expand...
Click to collapse
T8282 battery works with T8285. essentially, accessories for the T8282 work for the T8285. the only difference between the phones is the radio bands.

Related

January 22nd North American 850MHz HSPA 3G Blackstone...

Saw this news story, does anyone know if it is credible? The NextG Service is on the 850MHz band which is the same as Rogers/Fido in Canada and Cingular in the US...if all this is true then one of these unlocked would be 3G Compatible in North America...Thoughts?
http://apcmag.com/iphonelike_htc_touch_hd_set_for_aussie_launch.htm
http://www.expansys.com.au/d.aspx?i=173812
Well that would suck for me because about 3 hours ago I got an iPhone because I really needed 3g already I do ally of browsing and videos but I like the touch he better....
What is the exact issue with North America and the Touch HD? I thought HSDPA was fully supported in our continent under most major providers. Just curious as I'm looking at purchasing one in the future.
Lokosis said:
What is the exact issue with North America and the Touch HD? I thought HSDPA was fully supported in our continent under most major providers. Just curious as I'm looking at purchasing one in the future.
Click to expand...
Click to collapse
The Touch HD that is out now operates on UMTS 900/2100. Telstra in Australia and the North American providers (except T-Mobile) use UMTS 850.
hopefully it is just some software that HTC did. cuz we do have that option to change it to 850MHz 3G in the phone but just nothing happens to it. If a flash can fix it then it should be ok. EDGE for me is pretty fast anyways in Toronto most of the time.
b-e-a-s-t said:
Saw this news story, does anyone know if it is credible? The NextG Service is on the 850MHz band which is the same as Rogers/Fido in Canada and Cingular in the US...if all this is true then one of these unlocked would be 3G Compatible in North America...Thoughts?
Click to expand...
Click to collapse
850 mHz is just one of the 2 bands needed to work on US 3G. you also need 1900 . my understanding is one band is for upload the other for download. don't get me wrong, it would be fantastic if the Aussie version was fully capable on US networks. i'll believe it when i see it. heck, expansys even has a note saying they have to confirm the 850mHz 3G band.
850/1900Mhz....
could someone please explain the upload/download at different frequencies paradigm to me?
cortez.i said:
850 mHz is just one of the 2 bands needed to work on US 3G. you also need 1900 . my understanding is one band is for upload the other for download. don't get me wrong, it would be fantastic if the Aussie version was fully capable on US networks. i'll believe it when i see it. heck, expansys even has a note saying they have to confirm the 850mHz 3G band.
Click to expand...
Click to collapse
This is incorrect. With at&t you do not need both. With just 850mHz you will be more than fine.
Now with T-Mobile you would need both 1700 and 2100 not just 2100 or just 1700 both. Just more reason to hate T-Mobile.
I am ready to take the plunge and drop the $ for an HD. I also will switch my number back to at&t from verizon. I guessi cna say almost ready. I really dont want to spend $800 for no 3G
Does anyone know how hspa in Canada with Rogers/Fido works? i.e. are dual frequencies required or is 850MHz enough to get top speeds? Thanks...
Has anyone brought one into the US and had any success getting a 3G signal ?
Some carriers in the US and Canada use 850mhz such as AT&T and Rogers but they also use 1900mhz. It really depends where you live... Whiich city, state etc
1900mhz is growing in popularity in the states.
tbfl said:
Has anyone brought one into the US and had any success getting a 3G signal ?
Click to expand...
Click to collapse
Doesnt work
b-e-a-s-t said:
could someone please explain the upload/download at different frequencies paradigm to me?
Click to expand...
Click to collapse
I can't remember which but one is used for uploading and one is used for downloading.
cortez.i said:
850 mHz is just one of the 2 bands needed to work on US 3G. you also need 1900 . my understanding is one band is for upload the other for download. don't get me wrong, it would be fantastic if the Aussie version was fully capable on US networks. i'll believe it when i see it. heck, expansys even has a note saying they have to confirm the 850mHz 3G band.
Click to expand...
Click to collapse
You are exactly right. YOu need both 1900 and 850mhz
tbfl said:
Has anyone brought one into the US and had any success getting a 3G signal ?
Click to expand...
Click to collapse
Sadly, no 3G for me.
You do not need both 1900 and 850. Its only tmobile that u need both frequenes but they use 1700 and 2100. As long as u have ether 850 or 1900 (depending on what freuency ur area uses) u will have 3g with at&t.
cortez.i said:
850 mHz is just one of the 2 bands needed to work on US 3G. you also need 1900 . my understanding is one band is for upload the other for download. don't get me wrong, it would be fantastic if the Aussie version was fully capable on US networks. i'll believe it when i see it. heck, expansys even has a note saying they have to confirm the 850mHz 3G band.
Click to expand...
Click to collapse
No, the *network* you use may be present on more than one frequency, but its not 850 being uplink and 1700 being the downlink.
When we talk about UMTS the downlink is around 850/1700/2100 but the uplink is always a few MHz below that. (to be pedantic, the UMTS specification specifies the exact downlink/uplink separation)
I can't imagine HTC producing a UMTS 850 phone that won't work on ATT/Rogers and Telstra . Telstra only needs the 850 band so HTC can add in whatever extra the US providers use. It will probably be the same bands supported by the HTC Hermes and other phones common to these providers.
for AT&T, you do NOT need both frequencies (850 and 1900) for 3G. They don't HAVE both frequencies in most areas. It's one or the other.
And yes, T-Mobile US sucks ass...
-Mc
Tremere said:
No, the *network* you use may be present on more than one frequency, but its not 850 being uplink and 1700 being the downlink.
When we talk about UMTS the downlink is around 850/1700/2100 but the uplink is always a few MHz below that. (to be pedantic, the UMTS specification specifies the exact downlink/uplink separation)
I can't imagine HTC producing a UMTS 850 phone that won't work on ATT/Rogers and Telstra . Telstra only needs the 850 band so HTC can add in whatever extra the US providers use. It will probably be the same bands supported by the HTC Hermes and other phones common to these providers.
Click to expand...
Click to collapse
McHale said:
for AT&T, you do NOT need both frequencies (850 and 1900) for 3G. They don't HAVE both frequencies in most areas. It's one or the other.
And yes, T-Mobile US sucks ass...
-Mc
Click to expand...
Click to collapse
Well I stand corrected then. This is good news then. Just need somebody in the US to buy a Telstra HD and see if it works. I guess it will be dependent on the area though. If you don't have 850mhz.
Lol i guess it took a senor member to say it for anyone to believe it. I only said it in the first page lol. Lets see what happens when the aus model comes out.
So it is decided then IF the Blackstone is introduced by Telstra and working on their 850MHz 3.5G Network THEN it has the opportunity to work in both the US on Att and Canada's Rogers/Fido...I will wait for this device, purchase it and let the board know if someone else doesn't beat me to it!
P.S. does someone think that this release may be with the Android OS for Telstra? It was the Telstra reps that were commenting at CES 2009 regarding Palm Pre and how the next Android phone that they were testing kicks it...who knows probably coincidence...

Does anyone know what's the HSDPA for AT&T in US? Is it 850/1900?

Does anyone know what's the HSDPA for AT&T in US? Is it 850/1900?
I know that At&t is not 850 as people from the rest of the world who buy iphones 3g in usa can use them on 3g in their countries and only america use 3g on 850
HSDPA is 850/1900 for AT&T. Look at the specs for some of the 3G phones on their website, they should all say 850/1900 UMTS
This is what it looks like to various HTC mfg phones....in Ca.
on my ATT 8525(att wm6.0 rom)= 3G:850, HSDPA:1900
No matter which network is being used 3G is what is displayed
On my X1i only HSDPA: 1900 this connects only in the major metropolitan area! in Ca. I live in a small commuter community so, HSDPA is about 15 mile out of range north or south of me....But we do have 3G: 850(what att uses in their fringe areas) so no joy for my X1i
scl_electronics said:
This is what it looks like to various HTC mfg phones....in Ca.
on my ATT 8525(att wm6.0 rom)= 3G:850, HSDPA:1900
No matter which network is being used 3G is what is displayed
Click to expand...
Click to collapse
Download Advanced Configuration Tool (search) and you can turn on HSPDA and the icon. I've read some people had trouble with the setting sticking; however I've had good luck with the stock ATT Rom and latest 1.12.25.19 (I think) radio. Didn't do any speed tests to actually see if it made a difference other than anecdotal evidence.

850 band 3g net work.

I live in the U.S. Virgin Islands.
We have AT&T wireless 850 band 3g.
I want to buy this phone but the idea of not being able to get 3g on it is scaring me.
I heard it has 850 band 3g built in but it is turned off by htc.
Is this true?
Do it have a crack?
Can you tell me what i can do?
There are 2 versions of this phone:
1) The T8282, which doesn't not have the 850 capability at all (not even crippled). This phone will not work at 3G speeds down there, if you're only on 850.
2) The T8285 (Telstra - Australia) version, which does have the 850 capability. You can find them on eBay - and they're generally a little more expensive. I live in the US - and own this version. The only problem I have in Chicago though is that AT&T also uses their 1900 frequency in many areas downtown. I only get Edge speeds down there, but as soon as I'm outside that area and close to an 850 tower, I get 3G speeds again.
Good luck!
It would not be the first time HTC did that.
Remember the touch diamond.

HTC Magic (Vodafone UK) - Trying to get 3g in the states?

I have just taken a job in the states and brought my phone with me. I was expecting to be able to get 3g when I insert an AT&T or T-Mobile sim card. Unfortauntely the best that the phone seems to be able to get is Edge.
After doing a bit of research it seems that in the US they are using differnt frequencies.
Does anyone know of a fix which would allow my phone to get 3g in the states?
kdrover said:
I have just taken a job in the states and brought my phone with me. I was expecting to be able to get 3g when I insert an AT&T or T-Mobile sim card. Unfortauntely the best that the phone seems to be able to get is Edge.
After doing a bit of research it seems that in the US they are using differnt frequencies.
Does anyone know of a fix which would allow my phone to get 3g in the states?
Click to expand...
Click to collapse
T-Mobile are, I think, UMTS 900 / 2100 (perhaps like Vodafone in the UK and elsewhere, which is why we can all use T-Mobile-based rooted HTC ROMs in our phones).
AT&T is UMTS 850 and 1900.
At the moment no phone on earth can do both UMTS 850 *and* UMTS 900. These frequencies are used to provide longer range coverage in low-density service areas - in other words, most city-edge and countryside places.
UMTS 1900, 2100 and other higher numbered frequencies are used in higher-density areas to provide more calling / data capacity, but with the downside of more limited range.
It seems (googling) that AT&T do 850/1900 and T-Mobile do 1700 (as of May '08 sez Wikipedia), though the T-Mobile MyTouch3G does 1700 and 2100....so maybe T-Mobile now do 2100 as well (at least in some places). There doesn't appear to be much, if any overlap on 3G frequencies between carriers and users must be EDGE only on the telco that doesn't match their phone. Everyone does EDGE.
In New Zealand, where I am, one carrier does 850 and the other 900...but they both support 2100....and a 3rd carrier will soon be offering 2100 later this year.....so you do get *some* 3G on just one phone in built up areas where telcos need more capacity and use 2100....but you get nothing in the countryside and have to used EDGE/GPRS.
There are about 7 UMTS frequency bands all up (Wikipedia).....so any single device is going to be seriously challenged to support all those well.....and what telco would want their phones to do that anyway? Frequency incompatibilities prevent their customers from leaving.......which explains why there aren't any phones that do all 7.
linuxluver said:
T-Mobile are, I think, UMTS 900 / 2100 (perhaps like Vodafone in the UK and elsewhere, which is why we can all use T-Mobile-based rooted HTC ROMs in our phones).
Click to expand...
Click to collapse
If Vodafone (UK) & T-Mobile (US) are using the same UMTS frequencies, does this mean that I should be able to get 3g in the states? I am currently using a T-mobile (US) sim card but the phone is only getting an Edge connection. Maybe I need a ROM update??
maybe your in a area with no 3g coverage?
go to t mobiles website or better yet go here
http://coverage.t-mobile.com/default.aspx?pageType=idealer
and press the data coverage tab....are you in a purple place?
glendawg619 said:
maybe your in a area with no 3g coverage?
go to t mobiles website or better yet go here
http://coverage.t-mobile.com/default.aspx?pageType=idealer
and press the data coverage tab....are you in a purple place?
Click to expand...
Click to collapse
I checked on the t-mobile site and Tampa, FL appears to be all purple.
Have you checked your settings?
Settings -> Wireless controls -> Mobile networks -> Make sure 2G only is "Un-ticked"
If it doesn't work, maybe you would like to consider selling your one on ebay and buying a Magic {or other handset} from the US

3G Networks hardware LOCKING to each carrier by HTC

Among those of you with a deap knowledge of the inner working of HTC phone for 3G networks.
Is HTC doing something to phones for each carrier to lock the phone to a specific carriers 3G network and no other.
I'm asking because I was talking with a freind of mine who was given a HD2 as a part of a promotion for use on AT&T 3G network (850/2100). He uses T-Mobile and tried to get it to work with his T-Mobile SIM with no success. He also told me he had a conversation with someone from HTC that told him that he would no beable to get his HD2 to work on T-Mobile because the hardware will not work with T-Mobiles 3G network (1700/2100).
If this is the case does anyone know if it changable, is it a Firmware issue that can be changed or is it like hard wired physically?
Then the question is if we are buying these phone, some through contracts others outright, do we want to told whos service we have to use!!
Lets have some good discussion...
there are billions of threads on this.
3g is radio/hardware dependent. he'll unfortunately be stuck on EDGE.
He will have no issues using the phone with T-mobile usa. He will not get 3G because of the bands. He will just have edge. But calls, mms, text, email, and internet will all function properly.
Clarify this please
I bought my HTC HD2 in USA (unlocked) and here in Peru, where I live, I cannot get it to work with 3G. If I lived in USA, is there a way to know with what carrier I would get 3G ?
alejo1575 said:
I bought my HTC HD2 in USA (unlocked) and here in Peru, where I live, I cannot get it to work with 3G. If I lived in USA, is there a way to know with what carrier I would get 3G ?
Click to expand...
Click to collapse
So you are on Claro in Peru?
For 3G you need a phone with 3G 1900 support. If it is the T-Mobile version, that would have 3G on 1700/2100 bands which would be no good. If you got an AT&T handset (850/1900) it would work for 3G for you.
You need to understand what 3G support your version of the phone has. For example mine (Telstra Australia) is 850/2100 - which would not be able to pick up 3G in your network - however it works excellent with Telstra (850) in Australia and currently working well with StarHub (2100) in Singapore.
Your phone is quad band - but that is GSM quadband not 3G - it is 3G dual band and that is what is important for your connection.
***
Edit:
See http://en.wikipedia.org/wiki/List_of_UMTS_networks for list of 3G networks...
Yeah ...bad news
tallmantim said:
So you are on Claro in Peru?
For 3G you need a phone with 3G 1900 support. If it is the T-Mobile version, that would have 3G on 1700/2100 bands which would be no good. If you got an AT&T handset (850/1900) it would work for 3G for you.
You need to understand what 3G support your version of the phone has. For example mine (Telstra Australia) is 850/2100 - which would not be able to pick up 3G in your network - however it works excellent with Telstra (850) in Australia and currently working well with StarHub (2100) in Singapore.
Your phone is quad band - but that is GSM quadband not 3G - it is 3G dual band and that is what is important for your connection.
***
Edit:
See http://en.wikipedia.org/wiki/List_of_UMTS_networks for list of 3G networks...
Click to expand...
Click to collapse
Hi tallmantim ....
Thanks for your response. Yeah, today I did my homework and found that my HD2 has UMTS (HSDPA) 900 - 2100 bands, a fact that is not good because Claro and Movistar in Peru operated the 850 - 1900 bands for 3G.
Question: is there a HD2 version with 850 - 1900 band ????
alejo1575 said:
Hi tallmantim ....
Thanks for your response. Yeah, today I did my homework and found that my HD2 has UMTS (HSDPA) 900 - 2100 bands, a fact that is not good because Claro and Movistar in Peru operated the 850 - 1900 bands for 3G.
Question: is there a HD2 version with 850 - 1900 band ????
Click to expand...
Click to collapse
No, but the Telstra HD2 will pick up the 850MHz signals where they exist. There is no HD2 with the 1900MHz UMTS band at the moment
lude219 said:
there are billions of threads on this.
3g is radio/hardware dependent. he'll unfortunately be stuck on EDGE.
Click to expand...
Click to collapse
Would you mind pointing me in the direction of those BILLIONS of threads.
I've done searchs on hardware dependents, radio/hardware dependents, 3G radio.
There are so many way that is topic could be listed.
I'm finding nothing but my thread now just as before.
theisdept said:
a freind of mine who was given a HD2 as a part of a promotion for use on AT&T 3G network
[...]
Then the question is if we are buying these phone, some through contracts others outright, do we want to told whos service we have to use!!
Click to expand...
Click to collapse
Erm, so AT&T gives a phone, for promotion of their service, and at the same time they should allow you to use another network? You've got too much hope there...
alejo1575 said:
Hi tallmantim ....
Thanks for your response. Yeah, today I did my homework and found that my HD2 has UMTS (HSDPA) 900 - 2100 bands, a fact that is not good because Claro and Movistar in Peru operated the 850 - 1900 bands for 3G.
Question: is there a HD2 version with 850 - 1900 band ????
Click to expand...
Click to collapse
yea my friend my phone is , and i am here with t mobile suffering from same problem like u , i bought that phone which is compatible with Asia , not here in usa
is there way to exchange??
mine is
Network HSPA/WCDMA:
900/2100 MHz
Up to 2 Mbps upload and 7.2 Mbps download speeds
Quad-band GSM/GPRS/EDGE:
850/900/1800/1900 MHz
(Band frequency, HSPA availability, and data speed are
operator dependen)
egypro said:
is there way to exchange??
Click to expand...
Click to collapse
exchange your phone for cash
exchange that cash for a phone that supports the correct bands.

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