Vibrant Problem - Vibrant General

I know this has been covered several times before, but i posted with no response in an old thread so i appologize in advance for bringing up an old topic.
I have a vibrant unlocked on att. When i turn the phone on i get 3g on att to work fine for about 10-20 minutes then it turns to EDGE and stays that way and never comes out of it.
I know you guys are the experts so i figured this is a good place to start.
Thank you!

esanger21 said:
I know this has been covered several times before, but i posted with no response in an old thread so i appologize in advance for bringing up an old topic.
I have a vibrant unlocked on att. When i turn the phone on i get 3g on att to work fine for about 10-20 minutes then it turns to EDGE and stays that way and never comes out of it.
I know you guys are the experts so i figured this is a good place to start.
Thank you!
Click to expand...
Click to collapse
Im very new to the Vibrant so bare with me. How can the vibrant have 3g on At&t? Does the hardware radio support At&t bandwith for 3g? If this phone does then its truly a super phone.
Sent from my SGH-T959 using XDA APP
www.goteamfriday.com

OuncE718 said:
Im very new to the Vibrant so bare with me. How can the vibrant have 3g on At&t? Does the hardware radio support At&t bandwith for 3g? If this phone does then its truly a super phone.
Sent from my SGH-T959 using XDA APP
www.goteamfriday.com
Click to expand...
Click to collapse
the vibrant supports one of the 3g bands att uses (i think it supports 1900 but doesn't support 850) and unlike tmob, att 3g only requires one band to work.
interestingish thread about this: http://forum.xda-developers.com/showthread.php?t=735461&highlight=att takes a couple pages for real info to start, though.

Related

Why is my internet running so slow?

I just bought a data plan a couple of days ago and when i try and use the internet it is terribly slow, it took four minutes to load a Google search which is pathetic, On my old iphone i got about 60-90 kbps and i thought my nexus could easily beat that. btw I am on at&t edge using the stock radio, should i call at&t and ask if they can fix anything or do you guys know anything that could help? Thanks
Wait so are you using ATT or T-Mobile? If you have ATT did you buy the ATT version of the Nexus or the Tmobile one?
I am using at&t but have the t-mobile version...wouldn't that only effect 3g?
austin8868 said:
I am using at&t but have the t-mobile version...wouldn't that only effect 3g?
Click to expand...
Click to collapse
Yes, you are correct.
You answered your own question. You've got yourself a crippled Tmobile N1 if you're running it on ATT, especially if you want 3g internet.
erikikaz said:
Yes, you are correct.
You answered your own question. You've got yourself a crippled Tmobile N1 if you're running it on ATT, especially if you want 3g internet.
Click to expand...
Click to collapse
I do not have 3g where i live yet so that doesn't bother me. Since the phone is made for t-mobile will it also effect the edge service?
You should be pulling better edge speeds if you're in a good reception area. I would install a different radio.
if it's syncing over edge at the same time you're trying to surf, you throughput will suffer greatly... especially on edge.
whodatfever said:
You should be pulling better edge speeds if you're in a good reception area. I would install a different radio.[/
yeah i have perfect reception. I have never flashed a radio so i am not sure on some of this stuff, I am running the desire rom, can i download cyanogen or emothers radio and flash it or are those only build for their rom?
Click to expand...
Click to collapse

UN-Friggin-Locked Baby!

Confirmed! I got a code from unlockadic on EBay and now have my Vibrant on ATT! FU TMobile!
Could you not have just bought a captivate?
Sure, but wanted a Vibrant and got one used much cheaper. Plus, I don't have a contract and don't want to have one.
Shane_pcs said:
Could you not have just bought a captivate?
Click to expand...
Click to collapse
Yeah I am confused, what is the benefit of having a vibrant on AT&T as opposed to just getting a captivate? Aren't you basically running the same phone but without 3G?
We're all happy for you, not sure why though.
Plus, I need to use it out of the country and att wouldn't unlock the Captivate for 10 months, even if bought at full price. What do you mean no 3g? I am using 3g on it no prob.
Being that there have been several people wanting to unlock it without success, I figured I would let everyone know that this source is confirmed to work. If you aren't concerned, why bother posting that you don't care?
techspy said:
Plus, I need to use it out of the country and att wouldn't unlock the Captivate for 10 months, even if bought at full price. What do you mean no 3g? I am using 3g on it no prob.
Being that there have been several people wanting to unlock it without success, I figured I would let everyone know that this source is confirmed to work. If you aren't concerned, why bother posting that you don't care?
Click to expand...
Click to collapse
Really? That is interesting I have always been told that the tmo and AT&T 3G networks weren't compatible, and my unlocked mytouch has no 3G access.
Edit; It isn't that I didn't care I was just confused at the benefit of doing it considering the availability of nearly the same device on the network you are using it on.
maybe you should give Simple Mobile a try since it's unlocked. $60 a month for unlimited everything, no contract. An additional $10 gets you international calling. Sorta like Boost Mobile, except you supply your own unlocked GSM phone. There's a one time $12.99 fee to get their SIM.
I went this route with my daughter as I was able to get her a cheap used slider phone for practically nothing.
And the reason why this worked for him is the Vibrant supports the UMTS1900 band that AT&T uses. One of the rare T-Mobile phones that does.
I am confused how you are using 3G? ATT uses 850mhz band for their 3G and the Vibrant only is able to use 3G on either 1700mhz or 2100mhz. Am I missing something here?
Sent from my SGH-T959 using XDA App
Yep, 3g is working. The places I will be spending time in out of the USA don't have many options for service. Basically I buy prepaid sims and don't use data.
I have been with ATT so long that I still have the $15/mo unlimted data. Which is low enough to warrant leaving the account on while I am out of the country.
So to recap, ATT would not let me unlock the Captivate for 10 months even if I bought it outright. (I spent a long time talking to them to find this out as I was about to purchase a Captivate)
I do not want to get into a new contract
I need to use it out of the country.
I got a Vibrant used at a good deal.
That Simple Mobile looks like a good deal! If I didn't have the $15/mo unlimited data now, I would give them a shot.
dcam1075 said:
I am confused how you are using 3G? ATT uses 850mhz band for their 3G and the Vibrant only is able to use 3G on either 1700mhz or 2100mhz. Am I missing something here?
Sent from my SGH-T959 using XDA App
Click to expand...
Click to collapse
I don't know but it is working. I have crappy service at my house (for all carriers) and it goes back and forth between "3G" and "E". When I have a descent signal, it sure seems pretty snappy so I believe it is 3G. I will try a speed test when I am in a good signal location. Aren't the Captivate and Vibrant the same hardware wise? Wouldn't it make sense that it would work with ATT 3G if that is the case?
They area similar hardware but the radios are carrier specific. I am pretty sure it won't work on 3G on ATT for the same reason the iPhone doesn't work on T-Mo's 3G. You must be seeing some sort of glitch on your phone. Definitely try a speed test while you are on 3G and let us know!
Sent from my SGH-T959 using XDA App
I had to take a drive to test. Solid 5 bars, 3G indicator and tested on DSL reports and mobilespeedtest.com, both gave same numbers 1127kbps.
Get the speedtest.com app in the market.that is a more reliable speed test app.
Sent from my SGH-T959 using XDA App
I see speedtest by xtreme labs, speedtest.net speed test, and mordax speedtest. No speedtest.com app shows up.
techspy said:
I see speedtest by xtreme labs, speedtest.net speed test, and mordax speedtest. No speedtest.com app shows up.
Click to expand...
Click to collapse
speedtest.net
My bad I meant speedtest.net
Sent from my SGH-T959 using XDA App
Got it. I will test tomorrow and post the results.
I am confused about the Vibrant's 3G capabilities on ATT network as well...
When I had my Nokia N95 unlocked it didn't work on TMO's 3G but did on ATT's network. The same deal with iPhones, they won't work on TMO's 3G and limited to EDGE.
Well, I will have TMO unlock my Vibrant and pop my blackberry's ATT card in to see what's the deal.
You should of got an iphone... Lol.
Good luck with working it all out!
Catchin' the VIBE on the XDApp

[Q] unlock vibrant with at&t

i recently unlock my vibrant and now on at&t.
straight to the point i can recieve text messages but not send out.
i tried changing the message center number from tmobile to at&t but itz highlighted gray and unable to change.
if anyone knows wat to try next feel free
thankz
Try this: http://forum.xda-developers.com/showthread.php?t=782253
Do u know if u can get 3G on ATT with the unlock?
Bronco gator 15 said:
Do u know if u can get 3G on ATT with the unlock?
Click to expand...
Click to collapse
Yes you can. I have a Tmobile Vibrant unlocked and working on AT&T.
Bronco gator 15 said:
Do u know if u can get 3G on ATT with the unlock?
Click to expand...
Click to collapse
Many debates on this. My understanding is that one of the two bands (can't remember which) works on the vibrant. my work phone uses att and where I live I get att 3g when I switch out the sims. Not sure what band it is on to get this but it does work for me.
Sent from my SGH-T959 using XDA App
a400meter said:
Many debates on this. My understanding is that one of the two bands (can't remember which) works on the vibrant. my work phone uses att and where I live I get att 3g when I switch out the sims. Not sure what band it is on to get this but it does work for me.
Sent from my SGH-T959 using XDA App
Click to expand...
Click to collapse
The T-Mobile US Vibrant has the 1900MHz 3G band. AT&T still uses it in some places, but was supposedly phasing it out as of several years ago. Works fine in my area.

[Q] 4g speed on at&t phone.

Hello everyone
i just bought a brand new samsung infuse locked to at&t. I got it unlocked to use it with tmobile.i am currently using mytouch4g. i am able to use infuse after unlocking with tmobile but can not get 4g data speed on infuse.it only gives me EDGE speed
is there any setting out here that i can use that will give me 4g speed on samsung infuse using tmobile sim just like i get with mytouch4g. and i want to use it with tmobile USA.
please help
thanks in advance
No reply to help me. Please guys id anyone have any answer this .
I would really appricate this.
Sent from my HTC Glacier using Tapatalk
EDGE is 4G on AT&T. just kidding
I would check what you have it set to under phone options, dail *#*#4636#*#*, and check what band you have selected, as well as correct APN settings.
ATT's 4G bands are not the same at T-Mobile's 4G bands. Wont work no way no how.
@ chris it says gsm/wcdma auto(prl)
Sent from my HTC Glacier using Tapatalk
AT&T is using 1900 MHz (850 MHz in some markets) for 3G. T-Mobile will use 1700 MHz for download and 2100 MHz for upload or pretend I didn't say anything and keep trying something that isn't doable. that's your call
like jay says it doesn't have the correct network band antennas,
just sell it, new smartphones are coming out weekly.
and 4G is gimmicky, best of luck,
Thank you so much guys for trying to help. Do you guys think if root my phone and install custom rom. Is there any chance of getting 4g speed then?
Sent from my HTC Glacier using Tapatalk
ipaq dude said:
Thank you so much guys for trying to help. Do you guys think if root my phone and install custom rom. Is there any chance of getting 4g speed then?
Sent from my HTC Glacier using Tapatalk
Click to expand...
Click to collapse
it's a hardware limitation
check the APNs. I got an Atrix and my downloads on HSPA+ were between 2 and 3. Then I changed the APNs, they had 4 options. THen I got 5-7 downloads. Thats the closest to 4G you'll get on ATT
DiamondJay20 said:
check the APNs. I got an Atrix and my downloads on HSPA+ were between 2 and 3. Then I changed the APNs, they had 4 options. THen I got 5-7 downloads. Thats the closest to 4G you'll get on ATT
Click to expand...
Click to collapse
Are you sure it's not just the amount of traffic in your area?
Here in NYC, i've hit anywhere from 1.5Mbps down all the way up to 6+Mbps down
wow thanks for the info.are you on tmobile also ?
if yes do you mind sharing your apn settings.
i get good 4g speed with mytouch 4g which is tmobile branded device.
Thanks again for your inputs to help me out.
ph00ny said:
Are you sure it's not just the amount of traffic in your area?
Here in NYC, i've hit anywhere from 1.5Mbps down all the way up to 6+Mbps down
Click to expand...
Click to collapse
ipaq dude said:
wow thanks for the info.are you on tmobile also ?
if yes do you mind sharing your apn settings.
i get good 4g speed with mytouch 4g which is tmobile branded device.
Thanks again for your inputs to help me out.
Click to expand...
Click to collapse
ATT
Never tweaked and still on the cingular wap setting
Sent from my GT-I9100 using XDA App
ipaq dude said:
wow thanks for the info.are you on tmobile also ?
if yes do you mind sharing your apn settings.
i get good 4g speed with mytouch 4g which is tmobile branded device.
Thanks again for your inputs to help me out.
Click to expand...
Click to collapse
I hate to burst your bubble but there is no way you are going to get the AT&T device to work on T-Mobile's 3G, nevermind "4G"/HSPA. Sorry.
right... It has to do with the phone and the hardware... aka - the stuff they build the phone with. Its like if you try to use a phone to receive xm radio frequencies... it's not going to work... If you have a phone with the ATT bands they will NEVER work the same on Tmobile. But you can get Edge on any GSM network. Hope this helps. Search for att cellular bands on Google and compare them with Tmobile cellular bands.
Sorry to say it but the guys are correct! ALL of the AT&T 4G phone are quad band GSM phones! They work on the 850/1900 frequencies for all data and communication purposes in the USA! T-Mobile uses 1700! So basically you should have done a little more homework before you ran out and spent all that money!
If you are lucky you can still sell it and maybe get your money back!
Sent from my MB860 using XDA App
yes i know.what waste i hope i will be able to sell it.thank you guys anyways.
souperman7340 said:
Sorry to say it but the guys are correct! ALL of the AT&T 4G phone are quad band GSM phones! They work on the 850/1900 frequencies for all data and communication purposes in the USA! T-Mobile uses 1700! So basically you should have done a little more homework before you ran out and spent all that money!
If you are lucky you can still sell it and maybe get your money back!
Sent from my MB860 using XDA App
Click to expand...
Click to collapse
Wont work at all. Different bands. That is the one crappy part. TMO uses there oddball 1900 MHZ or something like that.
mediq91 said:
Wont work at all. Different bands. That is the one crappy part. TMO uses there oddball 1900 MHZ or something like that.
Click to expand...
Click to collapse
They use 1700 and 2100 (both are required by the phone).

sgs2 working on U.S. tmobile 3g

I have a friend that is reporting his new sgs2 is working on H with tmobile in the states and getting constant 7mbs down.
How can that be right? Is it possible tmobile is testing out the att merge and they are letting users on att towers?
Whoa, that's weird... I'm actually getting my SG2 from UPS today and I'll test it out with my T-Mobile sim card that's currently in my Nexus S. If I can get HSPA with my T-Mobile sim, that would be pretty cool!
There's no SGS2 with T-Mobile U.S.' AWS bands. It's hardware that's incompatible, not software. He's probably talking about the Galaxy S 4G.
djsaad1 said:
I have a friend that is reporting his new sgs2 is working on H with tmobile in the states and getting constant 7mbs down.
How can that be right? Is it possible tmobile is testing out the att merge and they are letting users on att towers?
Click to expand...
Click to collapse
He's bullshitting you or he's confused about what phone he owns. You can't magically make HSPA work using the AWS band on a device that doesn't support it.
Furry Atom said:
He's bullshitting you or he's confused about what phone he owns. You can't magically make HSPA work using the AWS band on a device that doesn't support it.
Click to expand...
Click to collapse
Or his friend with the T-Mobile U.S. SIM in his SGS2 forced the phone to roam on AT&T and he's being billed $15 per MB for data. Let's hope he's not watching movies.
Yeah, it was too good to be true... lol. It definitely doesn't work, I'm only getting edge with my T-Mobile sim. I knew better but wanted to believe it so badly.
i almost pissed in my pants when I saw this thread title. glad i didnt. sigh..back to my gs4g
Check out the conversation in this thread. This guy is a dev, so you would think he knows what he is talking about. He could be bullshitting, but I don't get why. Look at posts 284,286,289,291, and 294.
http://forum.xda-developers.com/showthread.php?t=1141550&page=29
djsaad1 said:
He could be bullshitting
Click to expand...
Click to collapse
^^^^^^
This.
The phone doesn't have the radio to work on T-Mobile's bands. No dev in the world can create a physical radio where there is none.
djsaad1 said:
Check out the conversation in this thread. This guy is a dev, so you would think he knows what he is talking about. He could be bullshitting, but I don't get why. Look at posts 284,286,289,291, and 294.
http://forum.xda-developers.com/showthread.php?t=1141550&page=29
Click to expand...
Click to collapse
Him being a dev doesn't mean ****. Hardware restrictions are hardware restrictions. He's either insane, or like Barry said below he could be roaming on AT&T. If he is then he will enjoy a multi thousand dollar bill.
BarryH_GEG said:
Or his friend with the T-Mobile U.S. SIM in his SGS2 forced the phone to roam on AT&T and he's being billed $15 per MB for data. Let's hope he's not watching movies.
Click to expand...
Click to collapse
Oh god. I would laugh my ass off.
My S2 is working on Tmobile. M-250K
But getting only 2-30kbs down.....
Sensation 4G is getting 1mb.
something is def wrong.
Everything works perfect except for data(works but too slow)
I also brought 250L CDMA version.
Going to take it to verizon tomorrow see if i can get it to work here.
joon82 said:
My S2 is working on Tmobile. M-250K
But getting only 2-30kbs down.....
Sensation 4G is getting 1mb.
something is def wrong.
Everything works perfect except for data(works but too slow)
I also brought 250L CDMA version.
Going to take it to verizon tomorrow see if i can get it to work here.
Click to expand...
Click to collapse
the unbranded sgs2 does not work on TMO's 3/4g network. Only way to get 3g/4g in the US is to get ATT.
joon82 said:
My S2 is working on Tmobile. M-250K
But getting only 2-30kbs down.....
Sensation 4G is getting 1mb.
something is def wrong.
Everything works perfect except for data(works but too slow)
I also brought 250L CDMA version.
Going to take it to verizon tomorrow see if i can get it to work here.
Click to expand...
Click to collapse
Wow.
SGS2 on T-Mobile US - 250K sounds about right for EDGE.
Sensation on T-Mobile US - 1MB is ridiculously low so something's wrong.
SHW-M250L on Verizon - You can roam with an account from another CDMA carrier but, unless something's changed, Verizon is a closed network meaning you can't bring your own equipment.
Good luck.
joon82 said:
My S2 is working on Tmobile. M-250K
But getting only 2-30kbs down.....
Sensation 4G is getting 1mb.
something is def wrong.
Everything works perfect except for data(works but too slow)
I also brought 250L CDMA version.
Going to take it to verizon tomorrow see if i can get it to work here.
Click to expand...
Click to collapse
Enjoy your CDMA brick. Verizon won't activate non verizon devices.

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