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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
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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.
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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.
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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.
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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
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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?
My service provider Cable&Wireless Panama uses 1900 band for 3G, but I NEVER, NEVER EVER get anything but EDGE data... ever.
I have my phone set to "GSM/WCDMA (Auto Mode)" in Network settings, but I could choose one or the other.
Which should I pick? I don't know what's up, but I can never get 3G and I know that the Vibrant supports 1900, which they use for 3G.
They tell me that 3G should appear there as an option, (at least on the Galaxy S i9000 that they support, but it doesn't on the Vibrant.
Can anyone give me some advice? I'm really stumped, because I was thinking it would work fine. I'm unlocked, Rooted, running Bionix-v but I've never been able to get anything but EDGE data and they say I should have 3G in most areas, but I've never even seen it once.
Not trying to be a jerk here, but are you absolutely sure your carrier uses 1900MHz for 3G specifically?
If you search for "List of UMTS networks" on Wikipedia, it lists Cable and Wireless as 850MHz. Another thread on androidforums.com titled "i9000 No 3G after update" talks about getting an i9000 working on 850MHz for Cable and Wireless.
Also, just to clarify, you are using the T-Mobile/American Vibrant?
Hope you figure it out.
inconceeeivable said:
Not trying to be a jerk here, but are you absolutely sure your carrier uses 1900MHz for 3G specifically?
If you search for "List of UMTS networks" on Wikipedia, it lists Cable and Wireless as 850MHz. Another thread on androidforums.com titled "i9000 No 3G after update" talks about getting an i9000 working on 850MHz for Cable and Wireless.
Also, just to clarify, you are using the T-Mobile/American Vibrant?
Hope you figure it out.
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Well, I was just on the line with them and asked specifically and two different reps (I tried twice) confirmed it was 1900 for 3G, so I do think it is.
They could be wrong, I guess, because most customer service reps are idiots throughout the world, but I don't know.
change your APN.
I bet it's set to epc.tmobile.com
either that or it's set to internet
donalgodon said:
My service provider Cable&Wireless Panama uses 1900 band for 3G, but I NEVER, NEVER EVER get anything but EDGE data... ever.
I have my phone set to "GSM/WCDMA (Auto Mode)" in Network settings, but I could choose one or the other.
Which should I pick? I don't know what's up, but I can never get 3G and I know that the Vibrant supports 1900, which they use for 3G.
They tell me that 3G should appear there as an option, (at least on the Galaxy S i9000 that they support, but it doesn't on the Vibrant.
Can anyone give me some advice? I'm really stumped, because I was thinking it would work fine. I'm unlocked, Rooted, running Bionix-v but I've never been able to get anything but EDGE data and they say I should have 3G in most areas, but I've never even seen it once.
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either it's the apn, or more likely: Cable & Wireless Panama are on 850.
http://www.wireless.att.com/travelguide/coverage/coverage_details.jsp?CIDL=591&MNC=CING
UMTS 850; GSM/GPRS 850
Moved of: Samsung Vibrant > Vibrant General
To: Samsung Vibrant > Vibrant Q&A
Please put your questions to: Vibrant Q&A
krylon360 said:
change your APN.
I bet it's set to epc.tmobile.com
either that or it's set to internet
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No, it's connnecting, and I get data via EDGE, as I said, the APN is correct:
apn01.cwpanama.com.pa
I just don't get any 3G signal... ever, but according to CW, I should if I use 1900, which the Vibrant supports.
donalgodon said:
No, it's connnecting, and I get data via EDGE, as I said, the APN is correct:
apn01.cwpanama.com.pa
I just don't get any 3G signal... ever, but according to CW, I should if I use 1900, which the Vibrant supports.
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again, Cable and Wireless doesn't use 1900. They use 850.
If you're stuck with the Vibrant, you might try Movistar? Looks like they might support both.
I know these aren't the answers you wanted to hear though. Sorry man.
Sent from my SGH-T959 using XDA App
I appreciate the help, guys.
I still find it confusing that the phone they support officially (they sell the i9000 here for like $800US) is listed as supporting the same 3G bands as the Vibrant, including 1900, which they quoted to me twice, but somehow, my Vibrant won't connect to 3G, so probably they are just idiots, as usual.
I might have to go with another carrier. Problem is that CW is the cheapest, by almost half. I guess you get what you pay for.
Movistar 850 pana..no tienen 3g son puro bulls**t,
Digicel y Claro si estan levantando 3g con la banda 1900.
Suerte
You may wanna try to post your problem in english.
Sent from my Bi-Winning powered SGH-T959 using XDA App
Hey donalgodon, I got the exact same problem with my Nexus S, same provider, same network configuration. Did you figure it out? I sent you a pm, let me know.
I was just reading this on Wikipedia.
In the bands section of T-mobile and thus their phones, 2g is supported by 850 and 1900. 3g is tied to 1700. I thought I had read it differently before but upon checking up on this once again (just now) that is what I have to offer. So I would assume if your carrier doesn't use 1700 for 3g then you would not ever get 3g.
JediDru said:
I was just reading this on Wikipedia.
In the bands section of T-mobile and thus their phones, 2g is supported by 850 and 1900. 3g is tied to 1700. I thought I had read it differently before but upon checking up on this once again (just now) that is what I have to offer. So I would assume if your carrier doesn't use 1700 for 3g then you would not ever get 3g.
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The Samsung Vibrant supports 3g on UMTS Bands I (2100), II (1900) and IV (AWS/1700).
If your carrier uses any of these bands for their 3g, you will get 3g.
If your carrier uses the 850 band for 3g, you will not get 3g.
Donalgodon's carrier uses 850. That's why it's not working.
Once unlocked,will the i777 be able to access data at 3G and 4G speeds on T-Mobile USA's cellular network?
monoloco1 said:
Once unlocked,will the i777 be able to access data at 3G and 4G speeds on T-Mobile USA's cellular network?
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to put it plainly,
NO
the i777 does not support the required bands for accessing TMobile's 3g/4g network.
Had the merger gone through, possibly. But as of right now, no.
Tmobile is on 1700MHz and 2100MHZ while AT&T is on 850MHz and 1900MHz.
No, and this is the case for every AT&T device in existence to my knowledge.
In fact, the ONLY device I know of that is not sold by T-Mobile and supports their HSPA bands is the GSM Galaxy Nexus, which is one of the first (if not the first) phones to do pentaband HSPA.
Personnally I tested the Unlock Process with a T-Mobile SimCard...not sure if working properly due to a operation range described by the fellows
Entropy512 said:
No, and this is the case for every AT&T device in existence to my knowledge.
In fact, the ONLY device I know of that is not sold by T-Mobile and supports their HSPA bands is the GSM Galaxy Nexus, which is one of the first (if not the first) phones to do pentaband HSPA.
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actually....
in even more bastardization provided by Samsung, the skyrocket can work on TMobile's 3/4G as long as you flash a TMo modem.bin to it.
jcomana said:
Personnally I tested the Unlock Process with a T-Mobile SimCard...not sure if working properly due to a operation range described by the fellows
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You can still get 2G on T-Mo because T-Mo uses the standard 850/1900 for 2G. What OP asks is 3G/4G.
Entropy512 said:
No, and this is the case for every AT&T device in existence to my knowledge.
In fact, the ONLY device I know of that is not sold by T-Mobile and supports their HSPA bands is the GSM Galaxy Nexus, which is one of the first (if not the first) phones to do pentaband HSPA.
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Actualy the T-Mobile version of the Samsung Galaxy SII Can work on AT&T`s 3G network. with BETTER Speeds than the AT&T version Data wise
hyelton said:
Actualy the T-Mobile version of the Samsung Galaxy SII Can work on AT&T`s 3G network. with BETTER Speeds than the AT&T version Data wise
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How is that an exception to what I'm saying. The T-Mobile version is not a device sold by AT&T, and is, by definition, a device sold by T-Mobile.
It's always been a bit easier to get T-Mo phones to work on AT&T - a number of them support the AT&T bands. But it's never been easy (and with the possible exception of the Skyrocket, never even possible) to go the other way without losing 3G.
Entropy512 said:
How is that an exception to what I'm saying. The T-Mobile version is not a device sold by AT&T, and is, by definition, a device sold by T-Mobile.
It's always been a bit easier to get T-Mo phones to work on AT&T - a number of them support the AT&T bands. But it's never been easy (and with the possible exception of the Skyrocket, never even possible) to go the other way without losing 3G.
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exactly. The skyrocket is the ONLY at&t phone i have seen that has this capability, and i have been hacking away on phones for a while, and i have both carriers
Pirateghost said:
to put it plainly,
NO
the i777 does not support the required bands for accessing TMobile's 3g/4g network.
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That would be the obvious answer based on the published specs, but I found an unselected listing in the hidden modem/ band settings for WCDMA 1700 MHz (Band IV) on my i777. I don't know if it works, but it's listed. From the phone keypad on the stock version, type in *#2263# and then look under Combinations. The phone lists 7 different GSM/PCS/WCDMA frequencies and only the obvious 5 are selected.
Anyone with an unlocked i777 on Tmo want to try it out?
Sent from my SAMSUNG-SGH-I777 using xda premium
Even though there is a setting for wcdma on 1700, it doesn't seem to make a difference. Still stuck on edge.
Sent from my SAMSUNG-SGH-I777 using XDA App
desertflyer said:
Even though there is a setting for wcdma on 1700, it doesn't seem to make a difference. Still stuck on edge.
Sent from my SAMSUNG-SGH-I777 using XDA App
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WCDMA is 2G/Edge technology. HSPA is 3G/4G technology.
maybe it will possible if we can flash a T-Mobile midem on out phone with out breaking it
jaysix79 said:
maybe it will possible if we can flash a T-Mobile midem on out phone with out breaking it
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Unlikely. Unless the phone has the hardware support for it.
I found out after extensive research on the Nexus One, that even though the radio chip inside it supports both frequency sets (pentaband, I suppose); the power amplifiers were only connected to certain frequency outputs, depending on the carrier it was advertised for. Which means even if I flashed a T-Mobile radio, the signal wouldn't be strong enough to get outside the case of the phone, let alone to a cell tower.
Your best bet is with European phones, as I believe they use the same frequencies as T-Mobile (since they're owned by a euro company).
Someone should confirm, but I would guess that the I9100 will work on T-Mobile with 3G.
Phoenix84118 said:
Unlikely. Unless the phone has the hardware support for it.
I found out after extensive research on the Nexus One, that even though the radio chip inside it supports both frequency sets (pentaband, I suppose); the power amplifiers were only connected to certain frequency outputs, depending on the carrier it was advertised for. Which means even if I flashed a T-Mobile radio, the signal wouldn't be strong enough to get outside the case of the phone, let alone to a cell tower.
Your best bet is with European phones, as I believe they use the same frequencies as T-Mobile (since they're owned by a euro company).
Someone should confirm, but I would guess that the I9100 will work on T-Mobile with 3G.
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No.
Tmo's AWS band its an odd ball. Only certain Canadian Carriers use the same band.
Sent from my SAMSUNG-SGH-I777 using XDA App
Red5 said:
WCDMA is 2G/Edge technology. HSPA is 3G/4G technology.
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No, WCMDA = UMTS = pure vanilla 3G.
2G = GSM/GPRS
"2.5G" = EDGE
3G = vanilla UMTS (WCDMA)
3.5G = HSDPA
3.75G = HSPA+
3.9G (it's not really 4G) = LTE
true 4G = LTE Advanced
Most phones, even if they support advanced modulation schemes (HSPA, HSPA+) will list the band support as "UMTSxxxx or WCDMAxxxx"
I heard (it's actually confirmed, can't find the article), T-Mo has the same 3G bands as AT&T in some remote part of the USA, I think somewhere in Washington state, not sure though? The OP might want to move there
veliksam said:
I heard (it's actually confirmed, can't find the article), T-Mo has the same 3G bands as AT&T in some remote part of the USA, I think somewhere in Washington state, not sure though? The OP might want to move there
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That might explain why the Vibrant apparently supported one (but not both) of AT&T's bands.
As I understand it, unlike the N1, the international HSPA+ Galaxy Nexus is full-blown pentaband.
Tmo has roaming agreement with at&t. So it is possible in places there is no tmo tower, your tmo phone could roam to at&t tower without showing the roaming sign.
veliksam said:
I heard (it's actually confirmed, can't find the article), T-Mo has the same 3G bands as AT&T in some remote part of the USA, I think somewhere in Washington state, not sure though? The OP might want to move there
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Sent from my SAMSUNG-SGH-I777 using XDA App
Hi, everybody. Things happens so I left my US phone in Warsaw's taxi being there for Euro-2012 and bought Galaxy S2 I9100 from Orange. Came back to US and was trying to configure internet connection and had no luck getting 4G speeds. So far on the phone it just showing EDGE and low speeds. Is there any way to fix that issue? Was trying to search for this on the forums and Google, just found a couple of ideas that it doesn't work with 4G for some reason.
Any help would be appreciated!
Not sure if polish sgs2 have 4g (Lte) at all. If you want 3g you need to change APN settings for your providers default. You will find it in web.
Other possibility - you have no coverage of network .
Sent from my Sgs2 via Xda Premium. Helped? Click thanks button!
If you're on T-mobile USA, you'll never get better than Edge speeds on their network with an i9100. The phone doesn't have the requisite antenna hardware to receive 1700 mhz for UMTS, which us one of the two required frequencies of the AWS band. (the other being 2100 mhz)
socah said:
Not sure if polish sgs2 have 4g (Lte) at all. If you want 3g you need to change APN settings for your providers default. You will find it in web.
Other possibility - you have no coverage of network .
Sent from my Sgs2 via Xda Premium. Helped? Click thanks button!
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You're right, the i9100 does NOT have LTE. He's trying to get what passes for 4G (HSPA+) on one of our US carriers. I'm trying to determine if it's T-mobile USA or AT&T.
I totally missed the carrier name right in the thread title. Simple Mobile operates on the T-mobile USA network. So, I'm sorry to inform you, but you bought a phone that will never get 4G on your network. Sorry.
What about 3G? Or because of the antenna frequency difference not even that?
korenpenza said:
What about 3G? Or because of the antenna frequency difference not even that?
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Same bands. So same problem.
I have a I9100 that I usually use the XXLPS modem from Germany on. However, the strongest signal I am getting is edge in the US using T-Mobile USA, where I know they have H+. Can anyone tell me which modem I should use?
shiboby said:
I have a I9100 that I usually use the XXLPS modem from Germany on. However, the strongest signal I am getting is edge in the US using T-Mobile USA, where I know they have H+. Can anyone tell me which modem I should use?
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It won't matter which modem you use.
You'll only get HSPA+ in SOME markets on T-mobile in the US on this phone. The majority of their network only uses the AWS band for H+, which this phone doesn't receive one of the two required frequencies.
They have been re-farming the 1900mhz band (which this phone DOES receive) for H+, but that has only happened in a relatively small number of markets.
Try to set your phone on AT&T, maybe that network will do better.
ctomgee said:
It won't matter which modem you use.
You'll only get HSPA+ in SOME markets on T-mobile in the US on this phone. The majority of their network only uses the AWS band for H+, which this phone doesn't receive one of the two required frequencies.
They have been re-farming the 1900mhz band (which this phone DOES receive) for H+, but that has only happened in a relatively small number of markets.
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Damn, that sucks. I don't suppose you know which markets these are.
beN.. said:
Try to set your phone on AT&T, maybe that network will do better.
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I'm using a T-Mobile USA sim card, so I think I need to use T-Mobile USA
shiboby said:
Damn, that sucks. I don't suppose you know which markets these are.
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Sorry, sure don't. I'm on AT&T.
shiboby said:
I'm using a T-Mobile USA sim card, so I think I need to use T-Mobile USA
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He meant to ditch the T-mobile SIM, and get one for AT&T. The phone gets H+ on all of AT&T's network.