FINALLY! Roam only under Mobile Networks - HTC EVO 3D

Okay, well, using MrGregs info in the Hero forum, I have managed to get Roam Only built into the Phone apk. This should allow you to switch to Roam only from Roaming under Wireless & Networks - Mobile Networks.
Issues:
when you select Roam Only, the button does not stay pressed, it is selected, but does not show it, the other 2 options stay checked, just not this one.
It takes a while to switch to Roam Only
Without using the prl trick, you will only be using 1X data...while I believe this is true, I have found that sometimes while roaming, I will have the 3g icon.
This was done to the synergy Phone.apk, so you should be using that Rom. If any other developers want support, I can lay out what I did. This was done with MrGregs info, but I was having issues getting the Phone.apk to decompile to edit. I figured out how to use 2 tools to accomplish this...again, I deserve no credit, as I did not figure out the edits myself.
To enable this, dump Phone.apk to the same directory as adb. Open a command prompt and change directory to your adb folder.
Code:
adb shell sysrw
adb shell mount (check and make sure system is rw)
adb shell rm /system/app/Phone.apk
adb push Phone.apk /system/app/Phone.apk
adb shell
cd /system/app
chmod 644 Phone.apk
ls -l (check and make sure that all your files are -rw-r--r--
reboot
when your phone reboots, you can go to Wireless & networks -> Mobile Networks -> Roaming -> Roam Only
Wait for the triangle to appear
Open Phone and dial *2 - Sprint Zone should come up (if it doesnt its because you dont have it installed) and your voice and data should be green. Click on call sprint and it should give you a prompt for a voice roaming call. Done. I had a red mark for voice until I rebooted, then it was green. To switch back, change Roam Only to Automatic or Sprint Only.
Hope someone finds this useful
If there is an issue, let me know. I know I cant fix it, but if I can get some devs to jump on this, maybe they can fix whatever is wrong. There is one thing that worries me and that is the original Phone.apk I used is 1MB larger than this one, maybe better compression?
Method for doing this yourself:
1. Download phone.apk.diff.zip from here
2. Also download baksmali, smali, and apktool - google should find these pretty easily, if there is a comment, I can post links (remove the -1.2.8 from the jar files).
3. Move these to a location (from here on, I will refer to this location as ANDW)
4. From you rom, grab Phone.apk, com.htc.resources.apk, framework-res.apk and move these to ANDW.
5. Make a backup of Phone.apk -> Phone.bak
6. Extract classes.dex from Phone.apk (only that file is needed, so I opened Phone in 7zip and dragged classes.dex to ANDW)
7. Extract phone.apk.diff.zip (should have 3 files)
8. Open an elevated command prompt and run this command from your location:
Code:
java -Xmx512m -jar baksmali.jar classes.dex
9. Goto out\com\android\phone
10. Open CdmaRoamingListPreference$MyHandler.smali in a text editor (preferably Notepad ++)
11. Search for
Code:
const/4 v3, 0x3
and change to
Code:
const/4 v3, 0x1
12. Save file
13. Open CdmaRoamingListPreference.smali
14. Search for
Code:
const/4 v2, 0x3
and change to
Code:
const/4 v2, 0x1
14a. for each of these const/4 v2, 0x* MrGreg made comments for each one 2=automatic, 4=sprint only, 1=roam only, you can make these comments is you want, also make them for the pswitch grouping a few lines down if you are going to do that. His changes are in the diff.zip
15. Save file
16. Go back to your elevated command prompt and run this command
Code:
java -Xmx512m -jar smali.jar out -o classes.dex
apktool if framework-res.apk
apktool if com.htc.resources.apk
apktool d -s Phone.apk
17. Goto Phone\res\values and open arrays.xml in your editor
18. Search for
Code:
<string-array name="cdma_system_select_choices_sprint">
and add a new line after "Sprint Only"
19. Insert this line in the new line
Code:
<item>Roam only</item>
20. Search for
Code:
<string-array name="cdma_system_select_values_sprint">
and insert this in a new line under "0"
Code:
<item>3</item>
21. Save file
22. Run this from an elevated command prompt
Code:
apktool b Phone
22. Goto Phone\dist and open Phone.apk in 7zip.
23. Open Phone.bak in 7zip also...so you should have an explorer window set to your location and 2 7zip windows (one with the newly created Phone.apk from apktool and Phone.bak that is a backup of Phone.apk original from your rom)
24. In the explorer window, drag your newly created classes.dex into the Phone.bak 7zip window and drop (yes overwrite...if you want, delete both classes.dex and resources.arsc, that way there isnt an issue)
25. In your Phone.apk 7zip window, drag resources.arsc to the Phone.bak 7zip window and drop
26. Save Phone.bak and change the extension to Phone.apk
27. You are now done and can cleanup everything but your new Phone.apk
I am doing most of this from memory as I want to get this out for those that want to do this...I will be redoing the edits with these instructions and see if everything is correct.
The reason you want to drag and drop into your original Phone.apk/bak is because you can not resign system apks...this method bypasses that issue.
Please give credit to MrGreg

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Hmm nice, ill give this a try when i get home.

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I tried this and I get a recording from the nice Verizon lady saying she cant authenticate my phone . Any suggestions ?
Sent from my PG86100 using xda premium

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Definitely nice but I already bought his app long time ago since no one got this going on the og Evo
Sent from my PG86100 using xda premium

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cbrown245 said:
I tried this and I get a recording from the nice Verizon lady saying she cant authenticate my phone . Any suggestions ?
Sent from my PG86100 using xda premium
Click to expand...
Click to collapse
What are you doing when you get the recording. If you are using the Sprint Zone app, it will not authenticate, but if you are calling...lets say your significant other...it should just have a prompt saying you are making a roaming call, and once you hit okay, it should connect. I mainly did this for the data roaming.
Another issue I noticed is it seems real finicky depending on how you hold the phone and whether or not it loses roaming service - does not affect when you are not roaming, only when roaming...could have something to do with tweaks in the rom, but figured I would let everyone know.
Also, jkcpsal...this is not to take away sales from MrGregs Roam Control app as I am sure it offers more features or will as it can be updated. I would suggest buying the app for those who can.

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Roam control ape also does not require root for select HTC devices, like the 3D.
Sent from my HTC Evo 3D

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cbrown245 said:
I tried this and I get a recording from the nice Verizon lady saying she cant authenticate my phone . Any suggestions ?
Sent from my PG86100 using xda premium
Click to expand...
Click to collapse
I've posted this a few other times as a response to this question (though no one seems to listen) as I had the EXACT same problem as you. Call sprint, get to tech support and have them do an hrl refresh (reset, reload, etc....) and that should do the trick.

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I'd appreciate you detailing the changes that allow that option. I like to edit my own files for my ROM.
edit - does this also roam 3g data? I've used Roam Control some and it seems to always be 1x data (could be my location though).

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Thanks for this! I personally bought roam control but found it not really reliable at all! Thanks to this tweak I can just trigger it and it goes to roaming perfectly fine without any glitching out or needing a reboot.
Sent from my PG86100 using Tapatalk

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I am glad people are saying this works as that was my biggest fear when I was posting this.
To mwalt2, this will only allow 1x from my testing, I have not gone to an area where I can roam 3g yet (though I think the only reason I can in this one spot is because of an agreement Sprint has). This should only allow 1x. The way to get 3g roaming is by using a Verizon prl. tecknofile (sp?) had one posted in the EVO 4g forum. You get that and update your prl and you should get 3g roaming. This method does require extra work as I had to restart the phone every time I changed my prl, even if it was the original. So, if you are going to roam a short while, I would not recommend the prl method.
I have not heard of the prl issue or having to call Sprint for anything other than the s-off method for the EVO 3d. I am glad you said something in case I get that issue, I will know what to do. I figured since he had not posted a comment, I answered his question, but still good to hear your suggestion.
I will post the method as soon as i am at a pc. You do need to have apktool, smali, and baksmali so go ahead and download those. Also grab a copy of Phone.apk, place it in the same spot as apktool and the other 2 files. Open the apk in 7zip and pull out classes.dex. The rest will come later today.
Sent from my PG86100 using XDA App

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Hey, is there anyway to make it possible to make the phone use 2G/3G respectfully? I miss that from my touch pro.
Sent from my PG86100 using Tapatalk

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mwalt2 said:
I'd appreciate you detailing the changes that allow that option. I like to edit my own files for my ROM.
edit - does this also roam 3g data? I've used Roam Control some and it seems to always be 1x data (could be my location though).
Click to expand...
Click to collapse
X2
Can you document the changes?
Thanks

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Should Root Explorer work to replace phone.apk instead of using ADB?

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letsgoflyers81 said:
Should Root Explorer work to replace phone.apk instead of using ADB?
Click to expand...
Click to collapse
Yes just be sure to fix permissions
Sent from my PG86100 using xda premium

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sumredhed567 said:
I've posted this a few other times as a response to this question (though no one seems to listen) as I had the EXACT same problem as you. Call sprint, get to tech support and have them do an hrl refresh (reset, reload, etc....) and that should do the trick.
Click to expand...
Click to collapse
I just asked the rep to do that. She had no idea what I was talking about. >_<

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I'm wondering why nobody has asked this yet, but here goes... Why, and when would constant roaming be useful?
Sent from my PG86100 using XDA App

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oohaylima said:
I just asked the rep to do that. She had no idea what I was talking about. >_<
Click to expand...
Click to collapse
I believe you are supposed to ask for a prl update - not hrl...dunno what hrl is
The reason some want roaming only is so that the phone does not keep searching for a sprint tower when you know there isnt one around.
First post will be updated shortly for the method of doing this...please stay tuned...I was trying to get the method posted earlier for everyone, but did not have a chance while working.

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jthein1989 said:
I'm wondering why nobody has asked this yet, but here goes... Why, and when would constant roaming be useful?
Sent from my PG86100 using XDA App
Click to expand...
Click to collapse
If you are in an area of poor sprint coverage, but ok verizon, it can save your phone from switching back and forth / searching for towers (saves battery). It'd be nice to get 3g roaming working. I'm pretty sure I've roamed 3g on verizon in the past with my ns4g. I was surprised as I thought it was always 1x, but read that they updated roaming agreements or something.

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With prl 11115 I can get 3g roaming with roam control...
Sent from my PG86100 using Tapatalk

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jstn76rs said:
With prl 11115 I can get 3g roaming with roam control...
Sent from my PG86100 using Tapatalk
Click to expand...
Click to collapse
Where did you get that prl?
Also, first post now complete with method and I ran through a test myself.