Hi, I have a Vibrant with Nero 4.1 with Tmo and I have it with SIM Unlock, but I want to change to AT&T because Tmo is very poor signal in my area. My question is, the code
*#2263# > wcdma850 , etc.......
This method really works to use AT&T 3G in my Vibrant??? anyone can confirm that ???
I have Nero 4.1 with JL5 modem.
Eugene373, the dev who originally posted the 850 band steps for us, lives in an area where t-mo uses the at&t towers, and he did state that enabling the band improved his signal tremendously when he is in an area using the at&t towers.
Still not sure if I've read a definitive answer to this question; however, most signs point to no. The main argument cited by those denying the 850MHz 3G band is that the FCC document makes no mention of said band, whereas it does mention the 1900MHz 3G band. Also, it seems as though many who cite this evidence are 100% (and almost bitterly) sure it's proof of no 850MHz band--prepare yourself for some irritated posts lol.
I use a Vibrant on AT&T--it works fine because I live in a fairly backwards area in which AT&T still relies on 1900MHz.
Ive honestly never needed it, on tmo in a good coverage area, I was just reporting what a respected dev posted on his site some time ago.
Ginger Clone's of the World Unite! Via the XDA App
guys how can you choose? mine is on auto but I can't choose the other options.
Sent from my SGH-T959 using XDA App
iynfynity said:
guys how can you choose? mine is on auto but I can't choose the other options.
Click to expand...
Click to collapse
Remove SIM, Dialer, *#2263#, 4 (Combi Bands), 8 (WCDMA 850), Menu and back
what's the default settings?
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ATT has two 3G bands 1900 and 850.
There is no doubt that if you are in att area where 3g is on the 1900 you will be ok.
The procedure to activate the 850 is as stated above, however I haven't see proof that actually the band is activated ......
If not you will still conect to ATT, but @ edge speeds
gagb1967 said:
ATT has two 3G bands 1900 and 850.
There is no doubt that if you are in att area where 3g is on the 1900 you will be ok.
The procedure to activate the 850 is as stated above, however I haven't see proof that actually the band is activated ......
If not you will still conect to ATT, but @ edge speeds
Click to expand...
Click to collapse
just a question. if att uses 850 and 1900. why use 850 when there's am option for 1900.
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iynfynity said:
just a question. if att uses 850 and 1900. why use 850 when there's am option for 1900.
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Click to expand...
Click to collapse
Not positive, but I'm pretty sure there are some areas with only 850MHz.
Might also be wrong about this, but 850MHz supposedly offers better building penetration/performance.
Sent from my Nexus One using XDA App
Ok, but... anyone can confirm if work or not the ATT 3G ???
guys is the default the auto?
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iynfynity said:
guys is the default the auto?
Click to expand...
Click to collapse
Yes, it is but by the default WCDMA 850 band is not checked.
No AT&T 850 3g
I live in Jacksonville, Fl and I can tell you that I do not pick up AT&T 3g signal. I am assuming that means that AT&T only uses 850 here because it is not checked in the service menu. I do, however, pick up 3g perfectly when I travel north into Georgia. So I would say that the Vibrant will not pick up the AT&T 850 band, only 1900. I am not convinced that there isn't a way to make it pick up the 850. I would think that if it is a choice in the service menu then there has to be a way to actually enable it. But, if you only have 850 3g in your area you may not want the Vibrant. Although It doesn't really bother me because I have wifi almost everywhere I go.
Krzysiek_CK said:
Yes, it is but by the default WCDMA 850 band is not checked.
Click to expand...
Click to collapse
i can't put a check on the wcdma 850.
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iynfynity said:
just a question. if att uses 850 and 1900. why use 850 when there's am option for 1900.
Sent from my SGH-T959 using XDA App
Click to expand...
Click to collapse
It's been my understanding for the longest time that one frequency is for uplink, and the other for downlink. That is why.
iynfynity said:
i can't put a check on the wcdma 850.
Click to expand...
Click to collapse
1. Remove SIM card
2. After "SIM card recoverd." message, dial *#2263#
4. Select option 4 - Combi bands
5. Select option 8 - WCDMA 850
6. Select Menu, Back
Krzysiek_CK said:
1. Remove SIM card
2. After "SIM card recoverd." message, dial *#2263#
4. Select option 4 - Combi bands
5. Select option 8 - WCDMA 850
6. Select Menu, Back
Click to expand...
Click to collapse
You can do this but it will not pick up that band.
Krzysiek_CK said:
1. Remove SIM card
2. After "SIM card recoverd." message, dial *#2263#
4. Select option 4 - Combi bands
5. Select option 8 - WCDMA 850
6. Select Menu, Back
Click to expand...
Click to collapse
Do you do this while the phone is on?
I am not clear, do I turn off the phone, remove the sim card. Then boot up with no sim card and enter the code in step 2?
azsamsancho said:
Do you do this while the phone is on?
I am not clear, do I turn off the phone, remove the sim card. Then boot up with no sim card and enter the code in step 2?
Click to expand...
Click to collapse
I just remove the SIM card while the phone is on.
Related
Ok so i bought the vibrant, unlocked it, and inserted my att 3g sim. the issue is im only getting edge speed when my phone is 3g capable. any ideas to correct that? Like creating an apn of some sort?
Thanx!
im about 50 percent sure that at&t and t-mob use different frequencys or something for their 3g signals so they are not compatable, same thing happend with the nexus one and its 3g on at&t if my memory is correct
bweed83 said:
im about 50 percent sure that at&t and t-mob use different frequencys or something for their 3g signals so they are not compatable, same thing happend with the nexus one and its 3g on at&t if my memory is correct
Click to expand...
Click to collapse
I second this.
Agree. U need to swap it for samsung captiva. The att galaxy s.
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my only working theory is that the 1900mhz freq isnt as widespread as the 850mhz freq, as the vibrant uses 1900. (i think). so that may be it. but i ask only because some commenter on a diff forum mentioned the need to create a 3g apn.
ps. the captivate is too boxy for me. idk why att changed it
Those are at&&&-t frequencys tmob is 1700 and 2100 I think so if our antenna only picks up those iy wont ever work on at-t's network
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muncher879 said:
my only working theory is that the 1900mhz freq isnt as widespread as the 850mhz freq, as the vibrant uses 1900. (i think). so that may be it. but i ask only because some commenter on a diff forum mentioned the need to create a 3g apn.
ps. the captivate is too boxy for me. idk why att changed it
Click to expand...
Click to collapse
It's not how widespread it is. They use different frequencies so your phone won't pick up the ATT 3G signals at all. Edge is 2G.
But I've seen one person on the forum claim that he did it. You can pm him/her on how to do it.
Sent from my SGH-T959 using XDA App
The Vibrant is capable of AT&T's 3G over the 1900mhz spectrum... if you live in a area where AT&T is only using the 850mhz spec... you will not get 3G.
muncher879 said:
Ok so i bought the vibrant, unlocked it, and inserted my att 3g sim. the issue is im only getting edge speed when my phone is 3g capable. any ideas to correct that? Like creating an apn of some sort?
Thanx!
Click to expand...
Click to collapse
HEY, don't listen to these guys. You can get both wcdma 1900 and wcdma 850 on the vibrant, don't worry, you will be able to get at&t 3G on your phone!
I'll show you how when I have time, maybe this weekend.
eortizr said:
The Vibrant is capable of AT&T's 3G over the 1900mhz spectrum... if you live in a area where AT&T is only using the 850mhz spec... you will not get 3G.
Click to expand...
Click to collapse
you gave the poor guy wrong information, the vibrant is capable of at&t 3g over 1900 AND 850
Having the same issue
I also am only getting Edge signal on my unlocked vibrant. When I run a 1MB speed test at mobilespeedtest.com it says I am downloading at 2581 kbps which, according to their chart, is a little more than the average 4g speed. Very weird. I also can't download any apps but I am searching for a thread on that.
bmwdoc2002 said:
I also am only getting Edge signal on my unlocked vibrant. When I run a 1MB speed test at mobilespeedtest.com it says I am downloading at 2581 kbps which, according to their chart, is a little more than the average 4g speed. Very weird. I also can't download any apps but I am searching for a thread on that.
Click to expand...
Click to collapse
i'm confused, you said you are getting edge signal, but your speed test shows 2.581mbps? thats 3g speeds.
by the way, you can make the vibrant pick up both att 1900 and 850 signals.
you own a bmw and you are a doctor?
SamsungVibrant said:
i'm confused, you said you are getting edge signal, but your speed test shows 2.581mbps? thats 3g speeds.
by the way, you can make the vibrant pick up both att 1900 and 850 signals.
you own a bmw and you are a doctor?
Click to expand...
Click to collapse
I am on an unlocked Vibrant right now. I live in the baltimore area and I am getting full 3g on a friends borrowed att sim. I get faster speeds on his att than I get on my own tmobile.
When I unlocked my phone, I used the wife's SIM card on my Vibrant and was able to get 3G as well. It registered without any issues.
New york city is also all 1900mhz. I am chugging along at a healthy 4300kbps according to mobilespeedtest. I think that is faster than the 3g spec allows so I am starting to doubt that website a bit.
snowdogging said:
New york city is also all 1900mhz. I am chugging along at a healthy 4300kbps according to mobilespeedtest. I think that is faster than the 3g spec allows so I am starting to doubt that website a bit.
Click to expand...
Click to collapse
what website? you can also set the vibrant to pick up at&t's wcdma 850mhz
SamsungVibrant said:
HEY, don't listen to these guys. You can get both wcdma 1900 and wcdma 850 on the vibrant, don't worry, you will be able to get at&t 3G on your phone!
I'll show you how when I have time, maybe this weekend.
Click to expand...
Click to collapse
HI,
Can you explain how you get UTMS / HSDPA 850 on the Vinrant? According to the specs at xda
It doesnt officially support that, but over at howard forums (sorry cant post lins as a new user):
1666323-USING-SAMSUNG-T-MOBILE-VIBRANT-T959-on-WIND-MOBILE.....IN-CANADA
it seems it is an option in the service menu. Have you tried UTMS850 (as opposed to GSM850) and can confirm it works. Its relevant in Australia as the best coverage NextG network (Telstra) operates on UTMS850
Cheers Chris.
Derp.....
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i'm not getting 3g either,
is there a link to a map to see if i have 1900 in my area?
what apn setting should be used, im pretty shocked that it did the edge APN settings on its own
Try dialing
*#2263#
choose option [4]Combi Bands
Choose option [8] WCDMA 850 bla bla
Choose Add WCDMA 850 bla bla
If the chip is capable to work in that frequency it will work. There are mixed reports but it is the way to fix it
I'm thinking about buying an unlocked Vibrant to use on AT&T, will the 3G work on AT&T network? Thanks.
Yes utilizing UMTS Band II 1900 MHz
lqaddict said:
Yes utilizing UMTS Band II 1900 MHz
Click to expand...
Click to collapse
Actually, the rumor going around the internet that you can only use At&t 1900mhz on the Vibrant is false.
The vibrant can also utilize wcdma 850mhz. So you should have no problems picking up both 3G signals from At&t.
I will work on making a how to video that shows how to make the vibrant pick up the wcdma 850, takes litterly 2 minutes to do.
Remember, you might run into other annoying problems such as setting up visual voicemail to work with At&t.
SamsungVibrant said:
Actually, the rumor going around the internet that you can only use At&t 1900mhz on the Vibrant is false.
The vibrant can also utilize wcdma 850mhz. So you should have no problems picking up both 3G signals from At&t.
I will work on making a how to video that shows how to make the vibrant pick up the wcdma 850, takes litterly 2 minutes to do.
Remember, you might run into other annoying problems such as setting up visual voicemail to work with At&t.
Click to expand...
Click to collapse
I saw Band V in the service menu, but I had no luck enabling it, so it seems; here in NYC ATT is using UMTS Band II and the Vibrant has no issues picking it up, I am getting upward to 3Mb/s down speeds
Here's an entire thread dedicated to it http://forum.xda-developers.com/showthread.php?t=735461 I was one of the non-believers until I tried an ATT SIM in my unlocked Vibrant.
lqaddict said:
I saw Band V in the service menu, but I had no luck enabling it, so it seems; here in NYC ATT is using UMTS Band II and the Vibrant has no issues picking it up, I am getting upward to 3Mb/s down speeds
Here's an entire thread dedicated to it http://forum.xda-developers.com/showthread.php?t=735461 I was one of the non-believers until I tried an ATT SIM in my unlocked Vibrant.
Click to expand...
Click to collapse
Umm interesting thread, similar to what we are doing.
So are you saying you are not able to pick up the wcdma 850 (FDD V) band? We set this up on a friends phone, with his At&t sim, it works.
Can you try setting your phone to wcdma 850 only, and drive to a location that has 850 signal, then check under basic information, you should be getting at&t 850 3g.
vietphunguyen said:
I'm thinking about buying an unlocked Vibrant to use on AT&T, will the 3G work on AT&T network? Thanks.
Click to expand...
Click to collapse
Dear Vietphunguyen, there seems to be controversy. We know for certain the vibrant can pick up att 3g signal using 1900 band, but the question is, what about 850. Me and a friend believe the vibrant can also get 850, but that link the other poster provided is something to note also.
Be safe, don't purchase the vibrant yet, until we test this more. 2 make sure you can pick up both 1900 and 850 bands.
I dont know much about the Vibrant just yet, but if its anything like the iPhone on TMO's towers, it might not work. The problem was with ATT using a single band for 3g (1900mhz) to send the recieve but TMO uses 2 bands, 1 to send and 1 to recieve... If this helps at all I dunno! lol
Apexsilverevo said:
I dont know much about the Vibrant just yet, but if its anything like the iPhone on TMO's towers, it might not work. The problem was with ATT using a single band for 3g (1900mhz) to send the recieve but TMO uses 2 bands, 1 to send and 1 to recieve... If this helps at all I dunno! lol
Click to expand...
Click to collapse
Thank you, just to clarify, for people visiting this thread.
At&t uses 2 differend 3G bands, one is 1900mhz and the other is 850 mhz. At&t is starting to implement 850 towers. Naturally, you would want a phone that picks up both bands.
Now, we know for CERTAIN, the VIbrant will 100 percent pick up At&t 3G 1900mhz signals. The question is, which we are uncertain of, will the Vibrant also pick up 850mhz band 3G signal, incase you hapen to drive to an at&t area that only has this band.
clearer?
Is this possible? I dialed *#2263#, selected the combi bands, then rebooted, and I had the 3g icon.
little bit of google searching:
http://www.engadget.com/2010/08/22/confirmed-galaxy-s-unlock-codes-are-stored-in-your-phone-vibra/
Thank you, I saw that and a few others. I guess what I mean is - am I getting 3g speed, or just an icon. How can you confirm this?
rangercaptain said:
Thank you, I saw that and a few others. I guess what I mean is - am I getting 3g speed, or just an icon. How can you confirm this?
Click to expand...
Click to collapse
It has been discussed time and time again on these forums.
The vibrant is able to get 3g speeds from AT&T because it supports the 1900 UTMS frequency. AT&T uses BOTH 850 & 1900 but mostly 850.
I believe it was confirmed on the official Samsung website that the vibrant works on 1700/2100(AWS)/1900/2100 3g frequencies.
Oniyuri said:
It has been discussed time and time again on these forums.
The vibrant is able to get 3g speeds from AT&T because it supports the 1900 UTMS frequency. AT&T uses BOTH 850 & 1900 but mostly 850.
I believe it was confirmed on the official Samsung website that the vibrant works on 1700/2100(AWS)/1900/2100 3g frequencies.
Click to expand...
Click to collapse
Correct. You'll get 3g speeds, but you wont get as good reception and will most likely drop back to edge more often that you normally would on tmobile.
Thank you, gentlemen.
rangercaptain said:
Is this possible? I dialed *#2263#, selected the combi bands, then rebooted, and I had the 3g icon.
Click to expand...
Click to collapse
I have att too
Ho did you get get the icon?
Sent from my SGH-T959 using XDA App
Probably in the rom i'm using.
To answer how to test to make sure you are getting 3G get Speed test app, then you can test.
Ok, thank you.
Sent from my SGH-T959 using XDA App
So I have the Vibrant. Unlocked it and Put a AT&T Simcard in it and it worked great with 3G but sometimes it'll drop to Edge out of nowhere and It'll stay there and not go back to 3G unless I reboot the phone or in the settings say only search for WCDMA
Now I wasn't sure if I need to update the drivers on the phone? or a Modem? I'm running Trigger Rom
Thanks for any input or advice
acm1108 said:
So I have the Vibrant. Unlocked it and Put a AT&T Simcard in it and it worked great with 3G but sometimes it'll drop to Edge out of nowhere and It'll stay there and not go back to 3G unless I reboot the phone or in the settings say only search for WCDMA
Now I wasn't sure if I need to update the drivers on the phone? or a Modem? I'm running Trigger Rom
Thanks for any input or advice
Click to expand...
Click to collapse
All the modems that ive seen were released by samsung to work for T-mobiles network that said you may have some luck trying out different modems found here http://forum.xda-developers.com/showthread.php?t=868774
as far as drivers if we had a source code for those maybe but the modems will be your best shot.
When I travel I do this to get 3G in Hawaii since Only Oahu Island has TMO 3G.
Here is the way you can do it:
Also by locking into 3g speeds, if you ever go into a non 3g area, or if your 3g signal is poor in your area, then your phone calls will drop and data will stop, unless you go back and set the phone to its default automatic gsm/cdma settings.
Dial: *#*#197328640#*#*
Click [1] debug screen
Click [8] phone control
Click [7] network control
Click [2] band selection
This is where you make a change, default setting is [1] automatic, which means it chooses automatically between gsm/cdma (Edge vs 3g). So we are going to change this and set it to wcdma band which is 3g.
Click [2] wcdma band
Click [1] wcdma all []
Now it should display “select wcdma all bands [*]"
Now on the bottom of your phone, click the menu key, it’s the one next to the home key, now click back, menu again one more time, back one more time, this is just to confirm it set to number 2 wcdma band.
Now click menu key one last time, click end.. and you are done. Now to double verify that the phone is locked into 3g, dial in: *#*#4636#*#*
Then click phone information Then scroll down to “set preferred network type” It should now have listed “wcdma only.” PS, if you tried to do a shortcut, and just set wcdma this way first without doing the lock above, it would just go back to gsm/cdma auto once you exit the screen.
Your phone should now be locked into 3g.
Thank you very much ^^^^ I'll try right away.
Is there anyreason or way for it to snap back into 3G bands when for some reason it is in Edge
There was a guy with somewhat the same problem a couple weeks ago. Take out your sim and type *#2263# on your dialer. Click combi band, then check the bottom band. Its WCDMA 850. It will put a star in the brackets like the rest of the selections. Hit menu, then back. Re-insert sim and you should be good.
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Isnt there one frequency att has that the vibrant wont support?
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Im not 100% sure, but I think AT&T uses WCDMA 850 for their 3g. That's the one I mentioned earlier which is disabled by default on the Vibrant.
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offdutyninja808 said:
Im not 100% sure, but I think AT&T uses WCDMA 850 for their 3g. That's the one I mentioned earlier which is disabled by default on the Vibrant.
Sent from my SGH-T959 using XDA Premium App
Click to expand...
Click to collapse
AT&T uses 850MHz and 1900MHz for 3G. (They have said that they plan on phasing out 1900MHz, but it's still active in my area.)
Pretty sure there is no 850MHz 3G on Vibrant. Enabling it the menu doesn't do anything. Plus, the FCC document posted by Engadget only showed AWS and 1900MHz 3G bands.
As for the OP, I've experienced the same problem recently...was using stock 2.2 though. Definitely be interested in figuring this out as well. Do you have data problems when the phone switches to Edge? (Other than it being really slow lol) I ask because I was experiencing a drop to Edge followed by no data (despite still seeing the E icon).
Edit: Really dumb question, but are you sure the 3G signal isn't just really weak? Does it happen only in buildings? 1900MHz is supposedly worse than 850MHz in this regard.
As far as I know the Vibrant will not pick up the AT&T 850 band. I have the same problem. I only get 3g when I go into an area that has 1900, even though the map seems to show 1900 in my area. Now when I go into the service mode to select bands it says "RAT selection option in resticted."
inconceeeivable said:
Edit: Really dumb question, but are you sure the 3G signal isn't just really weak? Does it happen only in buildings? 1900MHz is supposedly worse than 850MHz in this regard.
Click to expand...
Click to collapse
It does go down to really low signal but my friend with a Captivate in the same area has full bars. I hate it otherwise I'd be fine.
Hi, I have the white s2 i9100unlock version and when I put in my
Tmobile Sim card it says that I am running on E network instead of 4g. Is there anything I can do to change this? I contact Tmobile and they say it's the phone not their line. Please help me out because running on the E network is very slow
Sent from my GT-I9100 using XDA App
The international i9100 does not support 4G. Only option would be to get a 4G enabled one.
its because the international galaxy s2 doesn't have the same 3g bands as T-Mobile (assuming you are T-Mobile USA). They run off of 1700/2100 while the phone itself supports 850/900/1900/2100. While only the 2100 band matches, if you don't get 2100 coverage in your area, you will default to 2g.
Sent from my GT-I9100
Tkdinh101 said:
Hi, I have the white s2 i9100unlock version and when I put in my
Tmobile Sim card it says that I am running on E network instead of 4g. Is there anything I can do to change this? I contact Tmobile and they say it's the phone not their line. Please help me out because running on the E network is very slow
Sent from my GT-I9100 using XDA App
Click to expand...
Click to collapse
So you started another thread on this, where I also answered your question. This phone will never get HSPA+ speeds on T-Mobile USA - or what they call "4G". It lacks one of the necessary frequencies for it. It will only get Edge speeds. From what I remember on how T-Mobile USA's network functions, 3G and "4G" need both 1700 and 2100 mhz to function, as it uses one frequency for download and the other for upload.
EDIT: Here's the wikipedia article on AWS, which is the band T-Mobile uses for 3G/4G. In brief, AWS uses 1700 Mhz for uplink, and 2100 Mhz for downlink. So since it only gets half of the band, it won't do "4G".
akusokuzan said:
its because the international galaxy s2 doesn't have the same 3g bands as T-Mobile (assuming you are T-Mobile USA). They run off of 1700/2100 while the phone itself supports 850/900/1900/2100. While only the 2100 band matches, if you don't get 2100 coverage in your area, you will default to 2g.
Sent from my GT-I9100
Click to expand...
Click to collapse
Unfortunately, the bolded/underlined part is simply not true. T-Mobile USA needs your phone to be able to get both 1700 mhz and 2100 mhz UMTS frequencies to do 3G/4G. If your phone doesn't have one of the frequencies, it won't do 3G/4G at all, and fall to Edge (2.5G).
What if I overall another ROM? Will it help?
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Tkdinh101 said:
What if I overall another ROM? Will it help?
Sent from my GT-I9100 using XDA App
Click to expand...
Click to collapse
No. The phone simply doesn't have the hardware to receive the frequency. Nothing you can do to fix this.
akusokuzan said:
its because the international galaxy s2 doesn't have the same 3g bands as T-Mobile (assuming you are T-Mobile USA). They run off of 1700/2100 while the phone itself supports 850/900/1900/2100. While only the 2100 band matches, if you don't get 2100 coverage in your area, you will default to 2g.
Sent from my GT-I9100
Click to expand...
Click to collapse
Wow that's weird, here in aus you only need to match one freq to get 3g. Do you know what t-mobile has done to require two bands to match? (its just my curiosity asking)
sent from I9100 using Omega
Tkdinh101 said:
Hi, I have the white s2 i9100unlock version and when I put in my
Tmobile Sim card it says that I am running on E network instead of 4g. Is there anything I can do to change this? I contact Tmobile and they say it's the phone not their line. Please help me out because running on the E network is very slow
Sent from my GT-I9100 using XDA App
Click to expand...
Click to collapse
You need Galaxy2 HD LTE to access 4G. That particular model is not available outside Korea at the moment. If you want 4G, try Samsung Galaxy Note or LG Optimus LTE - also known as Nitro HD, or HTC phones.
Visentinel said:
Wow that's weird, here in aus you only need to match one freq to get 3g. Do you know what t-mobile has done to require two bands to match? (its just my curiosity asking)
sent from I9100 using Omega
Click to expand...
Click to collapse
That indeed is weird and inconvenient, but I guess telco's can setup their system however they like... It may have lot to do with number of people using mobile services. In OZ we have 22 million potential mobile users using 4 major telco companies, whereas in USA, they would get most of OZ population just in New York city, let alone rest of the country.
Ah systemcrasher I think they might be load balancing the hspa+ mimo across the two freqs. Telstra nextg doesn't need to coz there's allot less people here.
If that's the case still should be allowed to fall back to a non mimo mode.
Let this be a lesson to the OP, always research all carrier pre requisites before buying, also consider other carriers encased you'd like to stay open to other options.
sent from I9100 using Omega
Visentinel said:
Wow that's weird, here in aus you only need to match one freq to get 3g. Do you know what t-mobile has done to require two bands to match? (its just my curiosity asking)
sent from I9100 using Omega
Click to expand...
Click to collapse
Visentinel said:
Ah systemcrasher I think they might be load balancing the hspa+ mimo across the two freqs. Telstra nextg doesn't need to coz there's allot less people here.
If that's the case still should be allowed to fall back to a non mimo mode.
Click to expand...
Click to collapse
systemcrasher said:
That indeed is weird and inconvenient, but I guess telco's can setup their system however they like... It may have lot to do with number of people using mobile services. In OZ we have 22 million potential mobile users using 4 major telco companies, whereas in USA, they would get most of OZ population just in New York city, let alone rest of the country.
Click to expand...
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ctomgee said:
EDIT: Here's the wikipedia article on AWS, which is the band T-Mobile uses for 3G/4G. In brief, AWS uses 1700 Mhz for uplink, and 2100 Mhz for downlink. So since it only gets half of the band, it won't do "4G".
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So the answer is the link to the wikipedia article in my quote above. It's not T-Mobile USA's doing per se - they just purchased the AWS-1 (also known as UMTS band IV) band of the spectrum. That's just the way this band is set up. Wind and Rogers in Canada also use this band.