[DEV/WIP} Quest to enable "Roam Only" mode on the GS3

evilvoice said:

freeza, since MrGreg is the one who figured out the Roam Only hack waaay back on the HTC Hero, you may want to ask him for help. He was helping someone on these forums and on sdx to get it working on Samsung phones. Around the time it looked like they were finishing, the app Roam Control came out. I do not know if it is a necessity to have the app, but I could be wrong. I have done all the searching way back when my wife had the Samsung Moment. I commend you on trying this out and I wish you the best of luck if you want to do this by yourself, though I think you should try and get with MrGreg and see if he is willing to help get it working on Samsung devices. Yes, he is the one charging for Roam Control, but as Ive said before, he is really cool for leaving his initial instructions for the Hero up and not redacting them (though ever since he posted them, Ive had them in a txt file for safe keeping). I also suggest getting with MrGreg since it looked like they got it working for the Moment.

You seem to be the first person recently to put in work to getting a free option of Roam Only working for Samsung devices, and for that I applaud you. I hope you can figure it out. I know I couldn't and I went through every smali in the Samsung Moment apk.

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evilvoice said:

Yea, I know. Its mind-boggling looking at all the code and trying to figure out what does what. Looking through the work you talked about on the first page, it looks as though the S3 has another phone.apk which just adds to the problem of trying to find out where you want to be. I do know that in my attempts at getting it working on the Moment that some of the smali files didnt exist and the code is written differently. I never got to the point of actually flashing a file and trying it (wife would have killed me if she was left without a phone altogether). It does look like you are on the right path since the option shows up. Now you just have to find out in the smali where that option is referenced and tell it to do something else. I honestly do not think there is code to tell it to roam. As you said, it does not have the CDMARoaming...smali files (which is what I found on the Moment). It has to be in a "Roam" file, so these files look promising:
Roaming.smali
RoamingSettings.smali
Roaming$MyHandler.smali
I really know nothing about doing any of this, or I would try to help. I can tell you that you need to break away from trying to get things that match up on HTC (I only say that because that is how I attempted it, and it was wrong).

EDIT: Okay so I typed all that, im going to leave it for now. I had a thought, what if 0x1 is wrong? What if it is supposed to be 0x5 or something? We need to find cond_34 and see what options are available there. Or am I totally off base? I dont program, but usually code points somewhere. And it looks as it is running an if equals.

Code:

    if-eqz v2, :cond_34

    const/4 v3, 0x2

    if-eq v2, v3, :cond_34

    const/4 v3, 0x3

    if-eq v2, v3, :cond_34

    const/4 v3, 0x4

    if-ne v2, v3, :cond_54

shouldnt it be something like this?

Code:

    if-eq v2 v3, :cond_34

    const/4 v3, 0x2

    if-eq v2, v3, :cond_34

    const/4 v3, 0x3

    if-eq v2, v3, :cond_34

    const/4 v3, 0x4

    if-ne v2, v3, :cond_54

the first line has eqz and every line after has eq or is that just how smali is? also, the other 3 if statements reference v3, but the first does not???
Again, I am probably showing my stupidity, but I do not program, so could totally be off base.

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