Back at December 2010 Paul from modaco found how to enable sip over 3g for the gingerbread native client, his original thread is here:
For chefs it is probably straight forward how to use this tip, but for me I always begged for cookers to include this in their roms usually they didn't even replay to my request, so I investigated this, and here is very easy way to enable this feature.
This guide assumes you are a little familiar with changing files on your ROM.
*I take no responsibility for this guide, use it at your own risk
So, what we are doing is modifying the framework-res.apk from from our framework directory.
apktools from here: http://code.google.com/p/android-apktool/
Two files are needed, this: http://code.google.com/p/android-apk...r.bz2&can=2&q=
And this: http://code.google.com/p/android-apk...r.bz2&can=2&q=
(You can also do this for Linux and Mac, this guide will use windows)
Take the framework-res.apk from your ROMS zip file inside /system/framework directory.
How its done:
Extract both files that you downloaded to c:\apktools (can be any dir...)
You should have 3 files.
Copy the framework-res.apk to the same directory: c:\apktools
start --> run --> cmd
apktools d framework-res.apk temp
Now a folder named temp will appear named temp
inside temp, edit the file: C:\apktools\temp\res\values\bools.xml
I use notepad++, search for a line:
change in the line the "true" into "false"
save the file.
go back to cmd
apktools b temp temp.apk
Now rename your original framework-res.apk to framework-res.apk.zip
open it with winrar/winzip/7zip it will open like regular archive.
take the file that was created by the build process:
Use this file to replace the file inside the archive of framerwork-res.apk.zip (overwriting the original, inside the zip)
rename the file back to framework-res.apk
And now you have a sip over 3g enabled framework-res.apk.
There are few options to push this file, easiest is just replace it in your ROM zip and flush the ROM, you need to wipe cache and dalvik cache.
There are other ways to push this to your rom but I won't discuss them here.
I used this on stock roms, AOSP roms, MIUI roms and Sense roms, worked for me on all, if you find a roms it doesn't work on please report.
Thats it, its actually quite easy.