3g fixes for Defy, wcdma 850, 900, 1700, 1900, 2100Mhz

[cmstlist]

Thanks for your reply

It says IHDP56LC4.

How do we find out performance degradation, if any?

Okay so you need the 900/2100 files.

By degradation I mean that with the files for the wrong hardware, you get a weaker signal, even on EDGE.

Sent from my Nook Color!

 

[slick69]

I wasn't able to flash the zip here because it wasn't compatible with CWM 4.0.1.4-defy, but I was able to flash baseband switcher and it fixed my 3G.

 

[ursoouindio]

Hello,

I still haven't flashed any custom ROM to my Defy, but I'm looking forward to it.

I'm a Brazilian user, my carrir is Oi and it uses 850 and 2100 MHz for 3G and 1800 MHz for GSM. I don't know exactly what is involved on this aspect and what are the limitations on the available ROMs but I think it is quite an important thing to consider when getting a customized ROM for my phone. Can anyone enlighten me on that?
Thanks!

 

[slick69]

Hello,

I still haven't flashed any custom ROM to my Defy, but I'm looking forward to it.

I'm a Brazilian user, my carrir is Oi and it uses 850 and 2100 MHz for 3G and 1800 MHz for GSM. I don't know exactly what is involved on this aspect and what are the limitations on the available ROMs but I think it is quite an important thing to consider when getting a customized ROM for my phone. Can anyone enlighten me on that?
Thanks!

First - note down your version number from your stock ROM. Should be something like 3.4.2-107.

Then, flash any ROM, then flash baseband switcher. Select the Brazil version closest to your stock version from the baseband switcher app when you're in the ROM.

 

[cmstlist]

Hello,

I still haven't flashed any custom ROM to my Defy, but I'm looking forward to it.

I'm a Brazilian user, my carrir is Oi and it uses 850 and 2100 MHz for 3G and 1800 MHz for GSM. I don't know exactly what is involved on this aspect and what are the limitations on the available ROMs but I think it is quite an important thing to consider when getting a customized ROM for my phone. Can anyone enlighten me on that?
Thanks!

What is the FCC ID number behind the battery in back of your phone? If it's IHDP56LC3 then use the 850/1700/2100 baseband. If it's IHDP56LC2 then use the 850/2100 baseband.

 

[ursoouindio]

It's IHDP56LC2 then use the 850/2100. Thanks!

It is something I should worry when choosing a custom ROM?

 

[rashsalmn]

Hi guys,

I'm facing issues installing india 3g fix.. when i install the zip, it says installation aborted.

This is what i have done.... rebooted to recovery ( on cm7 rc 1.5 defy) n then selected install zip n then choose zip from sd card.. Please help.

 

[jayeshrc]

apparently amend scripting isnt supported anymore, so these patches dont work with 2nd init.. edify scripting shouldve been used

 

[Codename_Falcon]

Does anyone know if this will work to change the 3G frequency on the Defy+?

 

[chtamina]

apparently amend scripting isnt supported anymore, so these patches dont work with 2nd init.. edify scripting shouldve been used

exactly the same problem here !

 

[adlx.xda]

apparently amend scripting isnt supported anymore, so these patches dont work with 2nd init.. edify scripting shouldve been used

Try baseband switcher, you should find the same baseband.

 

[hpsaturn]

Hi, I have a Defy+ with cm9 (CM9-NIGHTLY-120516-Defy+.zip Epsylon3 version) when I try to change frequencies with cyanogen baseband settings, the phone loses signal. I tried with basebandswitcher also, but didn't work, they didn't change frequencies and the phone lost signal. Do you know why? With cm7 occurs the same.

The cellphone settings box says: WCDMA 900/2100 but i am trying to change it to 850/1900 (Colombia setting). Motorola Defy+ is QuadBand in HSDPA? Right? Should these programs work with Defy+? Thanks

 

[adlx.xda]

Hi, I have a Defy+ with cm9 (CM9-NIGHTLY-120516-Defy+.zip Epsylon3 version) when I try to change frequencies with cyanogen baseband settings, the phone loses signal. I tried with basebandswitcher also, but didn't work, they didn't change frequencies and the phone lost signal. Do you know why? With cm7 occurs the same.

The cellphone settings box says: WCDMA 900/2100 but i am trying to change it to 850/1900 (Colombia setting). Motorola Defy+ is QuadBand in HSDPA? Right? Should these programs work with Defy+? Thanks

If the box says WCDMA 900/2100 it's not Quadband, it's dual band on WCDMA . The phone is quadband for GSM.

AFAIK, you can't do what you want to do. Your phone supports WCDMA 900/2100. What the app allows you is switch the baseband back so the phone will have network, but it will need to be on WCDMA 900/2100.

If you had a WCDMA 850/1900 the app would allow you to select a corresponding baseband fileset so it match your hardware, so you get network on 850/1900.

 

[hpsaturn]

If the box says WCDMA 900/2100 it's not Quadband, it's dual band on WCDMA . The phone is quadband for GSM.

AFAIK, you can't do what you want to do. Your phone supports WCDMA 900/2100. What the app allows you is switch the baseband back so the phone will have network, but it will need to be on WCDMA 900/2100.

If you had a WCDMA 850/1900 the app would allow you to select a corresponding baseband fileset so it match your hardware, so you get network on 850/1900.

Thanks for your answer. But in multiple threads have said otherwise. For example with the Motorola Defy have changed the band or radio, for example this thread: http://bit.ly/Ly5fCt

 

[adlx.xda]

Thanks for your answer. But in multiple threads have said otherwise. For example with the Motorola Defy have changed the band or radio, for example this thread: http://bit.ly/Ly5fCt

They don't say otherwise AFAIK. You can change to 850/1900 baseband file on a 850/1900 Defy, doing so, you will get 3g again on a 850/1900 network.

If your Defy is made for 900/2100MHz, you can only connect to such frequencies, and it will only work with the 900/2100MHz baseband files.

If your Defy is made for 900/2100MHz, you can flash the 850/1900MHz baseband, you will have a baseband mismatch, and still the hardware won't be made for 850/1900MHz...

Baseband switcher isn't to change the Defy's suported baseband, it is mean to restore on a Defy the supported baseband so it can connect again to the network.

That's AFAIK, but, correct me if I'm wrong.

 

[cmstlist]

Moreover, the Defy+ is not the same phone as the Defy. If you are using an app written specifically for the original Defy you're essentially overwriting a bunch of system files with ones not designed for your phone's hardware. So if you lost all radio signal it's probably because of that.

 

[adlx.xda]

Moreover, the Defy+ is not the same phone as the Defy. If you are using an app written specifically for the original Defy you're essentially overwriting a bunch of system files with ones not designed for your phone's hardware. So if you lost all radio signal it's probably because of that.

That is definitely a good point to take also into account. Although, if the Baseband switcher is shipped also into CM for Defy+ the Devs have probably verified it should/could work, or maybe they have shipped a version specific to Defy+ .

 

[TJKV]

That is definitely a good point to take also into account. Although, if the Baseband switcher is shipped also into CM for Defy+ the Devs have probably verified it should/could work, or maybe they have shipped a version specific to Defy+ .

But then the Defy and Defy+ are pretty much the same phone, hardware wise. Only software modifications to support the bigger battery i think...

 

[adlx.xda]

But then the Defy and Defy+ are pretty much the same phone, hardware wise. Only software modifications to support the bigger battery i think...

That's also what I believe, but I'm not sure enough to state it. Idk about the battery... AFAIK it was the same phone with an overclocked CPU. I would think that radio-wise it is the same but who knows...

 

[TJKV]

That's also what I believe, but I'm not sure enough to state it. Idk about the battery... AFAIK it was the same phone with an overclocked CPU. I would think that radio-wise it is the same but who knows...

Well there have been many people who have flashed Defy+ ROMs on their Defy and vice versa. They haven't reported any problems. If radio hardware was different my guess is that even baseband switcher wouldn't have worked, right? But I always just assumed that all handsets of Defy, regardless of where they are sold, have the ability to use any of the types of networks ("Quad band" right?). Anyway this is all just speculation...as long as my defy works on my network, I'm happy

EDIT: Even within just Defy or just Defy+, if radios were incapable of tuning into the HSDPA frequencies other than of that region, then there would have been many complaints from people who have flashed different region's SBF's..so my (inexperienced) guess is that Defy can connect to all HSDPA bands. Just this afternoon I read an article somewhere about some US carrier releasing an update to a couple of their android handsets to make them quadband...until now they were marketed as dual band and non global. Maybe same for Defy?