Database Users

3G on my Samsung Vibrant

So I recently just got a Samsung Vibrant, which is unlocked and (I believe) rooted.
My problem is, that only when I FIRST put my SIM card in, I had 3G service. Ever since then, it's been EDGE. How can I fix this?
Is it even possible?
And I am on AT&T.
EDIT: Mods, I realize I posted this in the wrong section, could you move it for me? Thanks.

AT&T have 3G on 850mhz and 1900mhz bands
Whereas Version run on 1700mhz and 2100mhz bands
From tnkgrl's experiments, we know the Vibrant at least supports 1900mhz but may not support 850 - perhaps the area you are in only has 850mhz AT&T coverage.
To test out which bands your phone can support - Go to the phone dialpad and enter:
*#*#197328640#*#* then select menus: [1] [8] [7] [2] [4]
This should tell you which 3G bands are available - I suspect 850mhz won't be on the list.

Senorclean said:
AT&T have 3G on 850mhz and 1900mhz bands
Whereas Version run on 1700mhz and 2100mhz bands
From tnkgrl's experiments, we know the Vibrant at least supports 1900mhz but may not support 850 - perhaps the area you are in only has 850mhz AT&T coverage.
To test out which bands your phone can support - Go to the phone dialpad and enter:
*#*#197328640#*#* then select menus: [1] [8] [7] [2] [4]
This should tell you which 3G bands are available - I suspect 850mhz won't be on the list.
Click to expand...
Click to collapse
After I get to menu [7] it says RAT Selection Option is Restricted!
And I can't click anything else....

Things may be a little different on the Vibrant firmware, the selections labels are:
1. on the key pad, type *#*#197328640#*#*
2. Select [1] Debug Screen
3. Select [8] Phone control
4. Select [7] Network control
5. Select [2] Network Selection
6. Select [4] Combi Bands []

the Bell Vibrant is the same
however the T-mobile Vibrant might be different

t-mobile vibrant has 1700/1900/2100

So I am screwed.
I saw a thread that was trying to do a work-around but I don't think it will end up happening.

AT&T runs on 850/1900/2100
if you use the Bell model i9000m it will get full 3G on both 850 + 1900
if you keep Tmobile model SGH-T959, it will only get 3G when you are on the 1900 band, since only uses 1700/1900/2100 which AT&T doesn't use any of the other 2 bands
that's why you only get 2G (EDGE) since 2G runs on 850/900/1800/1900

Is there a map AT&T has I can look at that shows the frequencies? Or am I pretty much SOL?
Looks like I need to swap my Vibrant for a Captivate...good luck to me on that though!

Or you could leave AT&T....
I assume you bought your Vibrant outright?

Veetus said:
Is there a map AT&T has I can look at that shows the frequencies? Or am I pretty much SOL?
Looks like I need to swap my Vibrant for a Captivate...good luck to me on that though!
Click to expand...
Click to collapse
if you bought it outright you have 30 days to return or replace, I did. I suggest doing it asap, the i9000/m hardware layout is a lot more responsive in my opinion, the hardware keys for the US variants have the search key which I never use and it makes everything smaller (no good). Goodluck bro

Veetus said:
Is there a map AT&T has I can look at that shows the frequencies? Or am I pretty much SOL?
Looks like I need to swap my Vibrant for a Captivate...good luck to me on that though!
Click to expand...
Click to collapse
Turn Off Your Vibrant, Remove the SIM Card, Power up The Vibrant "without" a SIM inside
Select #2263*# from the Dialer , select option [4] combi bands press it,all networks are active * except number [8] WCDMA 850 (FDD V) press it([8] WCDMA 850 (FDD V), Now hit the back arrow turn off your phone and put in your at&t SIM, with the SIM in the Phone you cannot access the Menu.
Power on your phone and 850 is now activated.

Lost your 850 Band and can't get it back? Try this...

I was having a problem where no matter what I did I could not get the 850 band back. Even going through the DEBUG menu, and the *#2263# menu.
I solved my 850 band drop issue. Below is how.
I had updated my Bell Vibrant i9000M to the European version of Froyo through Samsung Kies, by doing the trick that makes it think the i9000M is an i9000 from Europe. I was working perfectly... until I decided to drop my phone out of 3G one day as I wanted to save battery life...
Anyway... I could not get it back into 3G. I tried the methods described in several posts. It was then that my partner (who had done the same thing to his phone) noticed that there was a "missing" menu item. The menu under WCDMA shows items 1 through 6, but the number 5 is missing. By choosing 5, I was able to get the 850 band back.
Here's the instructions:
Dial: *#2263#
Select option [2] for WCDMA BAND
Note how the items are numbered sequentially. My menu was missing option [5]. and [6] was listed as an 850 band.
Hit the Menu key, then hit "Key Input" and type 5 then Ok.
This will allow you to select the 850 band.
If you now go back into the *#2263# menu after doing this, you will see the 850 band is now selected and is option [5]. WDCMA 850 (FDD V)
After you have done this you can go back in and select "Automatic" and it will remember your 850 band.
My phone details:
Bell Vibrant M running Froyo
PDA: I9000XWJP6
PHONE: I9000XXJPM
CSC: I9000XEEJP4

Thanks for the info!
I'm curious, has your phone ever suffered the low signal freeze issue that is so common on Bell with the I9000? I'm wondering if the euro firmware fixes that?
My phone locks up so often it's virtually unusable, so I'm thinking of upgrading before we get the official Bell 2.2.

radeon_x said:
Thanks for the info!
I'm curious, has your phone ever suffered the low signal freeze issue that is so common on Bell with the I9000? I'm wondering if the euro firmware fixes that?
My phone locks up so often it's virtually unusable, so I'm thinking of upgrading before we get the official Bell 2.2.
Click to expand...
Click to collapse
If it helps i have this problem on the jpo firmware.. only in 3g though 2g working fine..

radeon_x said:
Thanks for the info!
I'm curious, has your phone ever suffered the low signal freeze issue that is so common on Bell with the I9000? I'm wondering if the euro firmware fixes that?
My phone locks up so often it's virtually unusable, so I'm thinking of upgrading before we get the official Bell 2.2.
Click to expand...
Click to collapse
I'm running froyo (docs v6) and have been for a few weeks now, no lockups like you mentioned. Actually, for the past week I have been using only 850 with amazing results. 1900 in my circle of life is not required.
Sent from a Bell I9000m running Froyo.

radeon_x said:
Thanks for the info!
I'm curious, has your phone ever suffered the low signal freeze issue that is so common on Bell with the I9000? I'm wondering if the euro firmware fixes that?
My phone locks up so often it's virtually unusable, so I'm thinking of upgrading before we get the official Bell 2.2.
Click to expand...
Click to collapse
No I do not suffer the lock ups. It might be that I am in downtown Toronto so have never experienced a weak signal. My partner just flashed a Bell Vibrant i9000M to the Chainfire one and claims it works awesome and hasn't had any problems yet - except that he had to do the SAME trick mentioned at the top of this post to get the 850 band back.

Wow man thank you very very very much. The only solution i thought existed was to flash it but this worked out for me.
If I could pat you on the back right now I would, believe me

MarkVibrant said:
I was having a problem where no matter what I did I could not get the 850 band back. Even going through the DEBUG menu, and the *#2263# menu.
I solved my 850 band drop issue. Below is how.
I had updated my Bell Vibrant i9000M to the European version of Froyo through Samsung Kies, by doing the trick that makes it think the i9000M is an i9000 from Europe. I was working perfectly... until I decided to drop my phone out of 3G one day as I wanted to save battery life...
Anyway... I could not get it back into 3G. I tried the methods described in several posts. It was then that my partner (who had done the same thing to his phone) noticed that there was a "missing" menu item. The menu under WCDMA shows items 1 through 6, but the number 5 is missing. By choosing 5, I was able to get the 850 band back.
Here's the instructions:
Dial: *#2263#
Select option [2] for WCDMA BAND
Note how the items are numbered sequentially. My menu was missing option [5]. and [6] was listed as an 850 band.
Hit the Menu key, then hit "Key Input" and type 5 then Ok.
This will allow you to select the 850 band.
If you now go back into the *#2263# menu after doing this, you will see the 850 band is now selected and is option [5]. WDCMA 850 (FDD V)
After you have done this you can go back in and select "Automatic" and it will remember your 850 band.
My phone details:
Bell Vibrant M running Froyo
PDA: I9000XWJP6
PHONE: I9000XXJPM
CSC: I9000XEEJP4
Click to expand...
Click to collapse
hey there i tried this but am still connected to 1900 plz dial *#*#0011#*#* and check which band is in use?

I did this, it works but wont switch to 850 at all.

What is the 850Band used for anyway?? Data, or Voice? Correct me if i'm wrong, but Bell has 3 bands?? What is each band used for??

850 band tend to have the strongest signal even though there not the fastest. You will more then likly notice its gone once your inside a building.
Im in Toronto so im constantly on 1900 outside but inside buildings it usually switches to 850 alot of times.
Sent from my GT-I9000M using XDA App

Didn't work for me! Once the menu item is added, and its selected (to stay on 850 only) and then back out, and select automatic, the #5 option dissapears, and #6 comes back....and once again, becomes an invalid menu item. Any ideas how to retain that #5 menu?? I'm using Doc's JPA rom.

I've got the missing '5' entry too. And, my phone has issues which sound like they might be caused by the missing 850 band. The fix doesn't work for me though, as it keeps reverting back to the 'missing entry' state.

if you go down to combi bands and select it there, i believe it fixes it as well. i remember someone saying that in another thread, but as i didn't have the problem in the wcdma menu, i never had to use that method.

[Q] Omnia7 WCDMA 850?

Does anyone know Omnia7 supports WCDMA 850 (UMTS 850)?
I want know it's supported by hardware but disabled by software,
or does not have hardware capability of WCDMA 850.
My firmware is
PDA: I8700XXJK1
Phone: I8700DXJK1
CSC: I8700XSOJK1
I tried Diagnosis tool.
*#2263#
[2] WCDMA Band Preference
[1] WCDMA 850
then 'Band Pref:WCDMA 850' is displayed.
then tap [Back], WCDMA 850 is not selected, no changes.
I also choose [5] WCDMA 2100 then 'Band Pref:WCDMA 2100' is displayed,
and then tab [Back], now WCDMA IMT2000 is selected.
Why WCDMA 850 could not be selected?
I also tried,
*#1111#
11111111 then [Back] 8 times to enter test mode.
Then,
[3] UMTS RF NV
[1] RF NV READ
[1] WCDMA 2100 and [4] WCDMA 850
I found tx_comp_vs_freq_0 and _1 and [6] tx_lim_vs_freq is all ZERO.
Could you tell me these values is not all ZERO.
But I don't know WCDMA 850 works if these values set correctly...

I digged this topic quite extensively as there's no W-CDMA 2100 MHz in the country I live in.
Unfortunately, I came to a conclusion that like other Samsung (and other brands) phones, there will be two different hardware versions of the phone with different frequencies.
The Omnia 7 frequency range is the following:
GSM : 850/900/1800/1900 MHz
W-CDMA : 900/1900/2100 MHz
The corresponding W-CDMA 850 version would be the Focus.
Hope this helps.

I think it's software locked.
Last night i was playing with the tx_comp_vs_freq_0 values and i found a site giving the correct values for another old samsung phone (not with windows phone).
Unfortunately those values were couples of numbers, for example 27,23,-5,... and so on but the diagnostic tool only gives the possibility of inserting positive numbers (there are not the + and - symbols). However after i inserted the first two values i exited and.... now i have the 3g symbol. I does not work, but I bet that with correct values it can work. I'm in Mexico with my european Omnia 7. Here the 3g network is 850 wcdma only.

fshqbizfs said:
I think it's software locked.
Last night i was playing with the tx_comp_vs_freq_0 values and i found a site giving the correct values for another old samsung phone (not with windows phone).
Unfortunately those values were couples of numbers, for example 27,23,-5,... and so on but the diagnostic tool only gives the possibility of inserting positive numbers (there are not the + and - symbols). However after i inserted the first two values i exited and.... now i have the 3g symbol. I does not work, but I bet that with correct values it can work. I'm in Mexico with my european Omnia 7. Here the 3g network is 850 wcdma only.
Click to expand...
Click to collapse
Oh whaw thanks for this info! Continue experimenting, maybe you'll finally get it working on 850 I really thought it's hardware-limited after everything I read on this subject...

Dealextreme sells an omnia 7 they claim to be WCDMA, might be worth a shot to get hold of someone that has it.

I think that the correct values are these ones.
Any suggestion on how to input them with the limited options we have?
4 tx_comp_vs_freq_0
0,11,21,27
26,20,9,0
-2,-1,2,7
11,12,8,7
5 tx_comp_vs_freq_1
-2,9,18,21
18,12,4,0
0,5,10,17
21,21,16,15
6 tx_lim_vs_freq
-1,0,2,2
1,0,0,0
0,1,2,4
4,5,7,7

i tride to change those numbers but i cant even put 1 number =( , someone have more luky .. or any other mehod to write the file ?

Mobilicity. Radio?

I am using this vibrant that i got from t-mobile. I live in Canada and have recently adapted the mobilicty network. I am noticing at at times the phone is having trouble communicating with their network even though i have full signal.
I am wondering if its something to do wit the radio or the rom.
So anyone know what rom or radio works best with mobilicty?

Hi kiazand. Glad to meet another Vibrant owner on Mobilicity. I have the same problem and believe it gets stuck scanning through the other carrier networks. I have only found a fix when using Froyo though.
1. Enter code *#*#197328640#*#* or if you have SGS Tools go to Secret Codes -> Servicemode, Debug, Netz, Audio, Common
2. [1] Debug Screen
3. [8] Phone Control
4. [7] Network Control
5. [2] Band Selection
6. [2] WCDMA Band
7. [4] WCDMA 1700 (FDD IV) <- this is for 3G service
8. Press the Menu button and click Back
9. [4] Combi Bands
10. [1] GSM 850 <- this is for roaming on Rogers
11. Press the Menu button and click END
12. Exit SGS Tools
Personally I only have WCDMA 1700 configured so my phone does not roam and I do not get charged every time a text comes through. Keep in mind though that 911 will not work if you do this and are outside Mobilicity coverage.
I am not sure if this works with Gingerbread ROMs based on the i9000, but I know it does not work with Cyanogenmod 7.
Hope that helps.

agosine said:
8. Press the Menu button and click Back
9. [4] Combi Bands
10. [1] GSM 850 <- this is for roaming on Rogers
Click to expand...
Click to collapse
Sorry, but it's been said many times before. There is no 850 support for our device - officially or unofficially. The radio just doesn't support it. Samsung simply never removed the links to it in the servicemode, whether that's because it was there for testing, or pure laziness. If you're accessing the Rogers network, it's accessing it on the 1900 band

Well we do roam on rogers and that is their frequency as well.. Just saying.. I'm on Mobilicity too and love my vibrant.

jpeckover said:
Well we do roam on rogers and that is their frequency as well.. Just saying.. I'm on Mobilicity too and love my vibrant.
Click to expand...
Click to collapse
Are you roaming on 2g or 3g?
If 2g youll have 850 roaming, but thats different than 3g roaming
Sent from my GT-I9000 using XDA App

I don't know I don't use data when roaming only voice so it doesn't matter. I'm not paying 5$/mb for roaming..

agosine said:
Hi kiazand. Glad to meet another Vibrant owner on Mobilicity. I have the same problem and believe it gets stuck scanning through the other carrier networks. I have only found a fix when using Froyo though.
1. Enter code *#*#197328640#*#* or if you have SGS Tools go to Secret Codes -> Servicemode, Debug, Netz, Audio, Common
2. [1] Debug Screen
3. [8] Phone Control
4. [7] Network Control
5. [2] Band Selection
6. [2] WCDMA Band
7. [4] WCDMA 1700 (FDD IV) <- this is for 3G service
8. Press the Menu button and click Back
9. [4] Combi Bands
10. [1] GSM 850 <- this is for roaming on Rogers
11. Press the Menu button and click END
12. Exit SGS Tools
Personally I only have WCDMA 1700 configured so my phone does not roam and I do not get charged every time a text comes through. Keep in mind though that 911 will not work if you do this and are outside Mobilicity coverage.
I am not sure if this works with Gingerbread ROMs based on the i9000, but I know it does not work with Cyanogenmod 7.
Hope that helps.
Click to expand...
Click to collapse
Have you run CM7 on Mobilicity? It just shows up as a 5 digit number for carrier name rather than "mobilicity". Anyone seen a way around this?

Kodes said:
Have you run CM7 on Mobilicity? It just shows up as a 5 digit number for carrier name rather than "mobilicity". Anyone seen a way around this?
Click to expand...
Click to collapse
That's normal for Nexus S that mobilicity sells so there's nothing wrong.
Also, whoever above said they get charged for incoming text while roaming is mistaken. You only get charged for sending.

uninvitedguest said:
That's normal for Nexus S that mobilicity sells so there's nothing wrong.
Also, whoever above said they get charged for incoming text while roaming is mistaken. You only get charged for sending.
Click to expand...
Click to collapse
This is from Mobilicity's website regarding roaming and texts. It would be great not to worry about incoming texts using up My Wallet.
Can I send and receive a text message or MMS message while roaming/outside Mobilicity unlimited coverage area?
In order to send or receive a text message or MMS message while roaming/outside the Mobilicity unlimited coverage area, you need to have money in My Wallet™. Each message you send or receive while roaming in Canada or the United States costs 10 cents, which will be deducted from My Wallet™. If you do not have money in My Wallet™ you will not be able to send or receive a text message or MMS message. You can add more money to My Wallet™ with a credit card or debit card by going online and logging into My Account, or by calling *611 and speaking with Customer Care.

Please help URGENT: Way to check/enable 850 3G band

I will be buying the Asia version GSII. I know there is a code that you can type in (something starting with the # and ending with #) to check and also see what 3G bands that the phone has enabled or disabled.
Can someone tell me what the code is? I know certain region GSII has the 850 3G disabled as this band is not used in Asia. I want to be certain that the phone has the frequency for 850 (at least it can be enabled) before buying.
If you know the code, please let me know where to enter it.
This is for using with AT&T's 850 3G Band.

Asia version? International version?
*#301279#
*#*#4636#*#*

Geumbou said:
Asia version? International version?
*#301279#
*#*#4636#*#*
Click to expand...
Click to collapse
So *#301279# is for Asia Version? Can you tell me where to enter this code in order to check?

Enter it in the dialer.
Also, you may have to flash a different modem to be able to enable 850 band. Likely one from the Bell Canada version.
Sent from my GT-I9000 using xda premium

hansonator said:
Enter it in the dialer.
Also, you may have to flash a different modem to be able to enable 850 band. Likely one from the Bell Canada version.
Sent from my GT-I9000 using xda premium
Click to expand...
Click to collapse
If the phone has the 850 band, when I enter *#301279# in the dialer it will list the 850 under WCDMA band like this?
= WCDMA BAND =
[1] WCDMA ALL []
[2] WCDMA 2100(FDD I) [*]
[3] WCDMA 1900(FDD II) [*]
[4] WCDMA 900(FDD VIII) [*]
[5] WCDMA 850 (FDD V) []
And I just need to tap on the 850 to enable?

For that one you might need the code
*#*#197328640#*#*
Select band, then WCDMA