How to turn to 3g/hsda only, no edge on ICS 4.0.3 - Vibrant Q&A, Help & Troubleshooting

At first, I used 2.3 honey comp ROM for my vibrant. I had an option that use HSDA/3g only, then the icon never turned to E, only 3g and H appears.
A few days ago, I updated my vibrant to 4.0.3, I couldn't find the previous option any where, and the icon keep changing between E/3g/H.
In addition, when i use rom 2.3 and turn on Mobile Ap: It worked great like a charm.
When I changed to 4.0.3, the speed of mobile AP is really slow and not stable.
Any helps are appriciated.

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kalentjne said:
At first, I used 2.3 honey comp ROM for my vibrant. I had an option that use HSDA/3g only, then the icon never turned to E, only 3g and H appears.
A few days ago, I updated my vibrant to 4.0.3, I couldn't find the previous option any where, and the icon keep changing between E/3g/H.
In addition, when i use rom 2.3 and turn on Mobile Ap: It worked great like a charm.
When I changed to 4.0.3, the speed of mobile AP is really slow and not stable.
Any helps are appriciated.
Click to expand...
Click to collapse
Seems to me that when you switched the roms the modems changed ( as usually happens). Did you notice what is your new modem under baseband. If you remember the baseband version which you used on your 2.3 honey, you could flash it here and it might solve your data problem.
usually different modems have different sensitivity to the different signal strengths. in case of a weaker signal strength a particular modem might switch from 3g whereas a different modem might stick to 3g at a lower signal strength too.

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kunalbhuta said:
Seems to me that when you switched the roms the modems changed ( as usually happens). Did you notice what is your new modem under baseband. If you remember the baseband version which you used on your 2.3 honey, you could flash it here and it might solve your data problem.
usually different modems have different sensitivity to the different signal strengths. in case of a weaker signal strength a particular modem might switch from 3g whereas a different modem might stick to 3g at a lower signal strength too.
Click to expand...
Click to collapse
i did a research and learn that ICS 4.0 does not allow the user to swich WCDMA only.
Is it ok if If install modem kernel of a 2.3 ROM into a 4.0.3 Rom. IF so, How can I do it? please give me the tutorial link!

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kalentjne said:
i did a research and learn that ICS 4.0 does not allow the user to swich WCDMA only.
Is it ok if If install modem kernel of a 2.3 ROM into a 4.0.3 Rom. IF so, How can I do it? please give me the tutorial link!
Click to expand...
Click to collapse
I don't know which is your current rom...i'm on miui v4 right now and if i go in Settings>More>Mobile networks>Network type selection i can switch between 3G and 2G...so i can choose only 3G network.Regarding the modems,if you're an ICS rom you can flash only ICS modems...here is the link http://bit.ly/GFMk0R

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My current ROM is Euphoria r.c2.

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nope might not work
kalentjne said:
i did a research and learn that ICS 4.0 does not allow the user to swich WCDMA only.
Is it ok if If install modem kernel of a 2.3 ROM into a 4.0.3 Rom. IF so, How can I do it? please give me the tutorial link!
Click to expand...
Click to collapse
I have not tried that. In the link below you will find the modems which are ics compatible.
http://forum.xda-developers.com/showthread.php?t=1158783&highlight=bootloaders
All you have to do is download your choice of modem ( depending on your location) and put it on your SD card. For convenience sake put it in the phone sd card directly and not in any folder. then
1) reboot into recovery
2) select install zip from sdcard/ internal sdcard
3) choose zip file of the modem
4) yes
let it do its thing. Then reboot and check in the settings under baseband.
PS: since the rom that you are using now does not give you the option to select 3g only, even the new modem will switch to E in areas of very weak 3g reception. Just FYI.

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kunalbhuta said:
I have not tried that. In the link below you will find the modems which are ics compatible.
http://forum.xda-developers.com/showthread.php?t=1158783&highlight=bootloaders
All you have to do is download your choice of modem ( depending on your location) and put it on your SD card. For convenience sake put it in the phone sd card directly and not in any folder. then
1) reboot into recovery
2) select install zip from sdcard/ internal sdcard
3) choose zip file of the modem
4) yes
let it do its thing. Then reboot and check in the settings under baseband.
PS: since the rom that you are using now does not give you the option to select 3g only, even the new modem will switch to E in areas of very weak 3g reception. Just FYI.
Click to expand...
Click to collapse
what im looking for is the option "Network Preference" on 2.2 and 2.3, on any ICS Rom, it disappears then. I downloaded an app from market called 3g only but it is not strong enough, the gsm still change to E icon.
Anymore way to get WCDMA only?

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kalentjne said:
what im looking for is the option "Network Preference" on 2.2 and 2.3, on any ICS Rom, it disappears then. I downloaded an app from market called 3g only but it is not strong enough, the gsm still change to E icon.
Anymore way to get WCDMA only?
Click to expand...
Click to collapse
In that case you can try miui 4 as mikka06 suggested above.

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1. open dialer
2. dial *#*#4636#*#*
3. click phone info
4. scroll down
5. change preference
6. you're welcome

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kunalbhuta said:
In that case you can try miui 4 as mikka06 suggested above.
Click to expand...
Click to collapse
It's laggy.
I flashed back to 2.3 cyanogen mod 7.2 already. Now enjoy the WCDMA only zzz,
But i'm still looking for an ICS rom that has that suck option.

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xtone said:
1. open dialer
2. dial *#*#4636#*#*
3. click phone info
4. scroll down
5. change preference
6. you're welcome
Click to expand...
Click to collapse
This secret code does does does not work on ICS ROm, man.

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are you sure? works fine on mine.
Sent from my SGH-T959 using XDA

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Sorry I forgot to scroll down xD.
But ICS still has bug with wifi AP and consumes battery with rocket-fire speed.

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I dunno what you're doing but my tethers work fine, both wireless and USB. lol
Sent from my SGH-T959 using XDA

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kalentjne said:
It's laggy.
I flashed back to 2.3 cyanogen mod 7.2 already. Now enjoy the WCDMA only zzz,
But i'm still looking for an ICS rom that has that suck option.
Click to expand...
Click to collapse
Why is laggy or which are your issues? I'm on miui v4 for one week and believe me is not laggy at all
Sent from my SGH-T959 using XDA

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mikka06 said:
Why is laggy or which are your issues? I'm on miui v4 for one week and believe me is not laggy at all
Sent from my SGH-T959 using XDA
Click to expand...
Click to collapse
I just dont like to use MIUI 4. I flashed it for 30 mins and then kicked it out of my phone. Cyanogenmod 7 brings me a smoother UI and long battery life.
Just wait a few week for the ICS Rom bugs fixed and then i'll try. I'd love to use ICS, it has such an really amazing UI.

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kalentjne said:
It's laggy.
I flashed back to 2.3 cyanogen mod 7.2 already. Now enjoy the WCDMA only zzz,
But i'm still looking for an ICS rom that has that suck option.
Click to expand...
Click to collapse
One more suggestion.
If you install Doc's Master ICS v5, in that there is an inbuilt app called as galaxy S settings in the app drawer, wherein under radio you can select HSPDA only (3g only). Although I am not quite sure if it works because i don't have 3G on my plan. However the ICS rom works great otherwise and probably might solve your AP issue too. (Fingers crossed)

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Great Tip
Thanks a lot, i was going mad with the phone keep going back to 2g.

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Apparently, someone had an app to do the switching, but I couldn't download it because the attachment is gone or something.
http://forum.cyanogenmod.com/topic/19319-hspa-only/#entry166612