Develop Bugs

[Q] Getting mms working on Epic 4G flashed to Virgin Mobile

Here is what I have been working on, and the thoughts that I have just been thrown out there, and if anyone has any thoughts, ideas or recommendations please add:
I am currently using an unrooted samsung galaxy s sph-D700 flashed to VM with no mms.
Most of the credit goes to Brooksyx for the ideas posted here
My initial thought is that it can't be that complicated to alter the apn settings within any rom to get mms rocking for a sprint phone flashed to Virgin Mobile and things seem overcomplicated.
From this following thread what are the limitations of apn manager? Could apn manager be used on any ROM that doesn't have secured apn settings, and is there a way to find out which ROMs for any phone have unsecured apn settings? Is there a way to unsecure your apn settings and change them to fit the VM settings
http://forum.xda-developers.com/showthread.php?t=1404270&page=19
From this same previous thread at the bottom, would it be possible to just edit the cdmasmsdispatcher.smali file to fit the specific ROM and phone you are trying to enable mms? This one, I am currently working on comparing the cdmasmsdispatcher.smali file from the stock optimus v, the epic 4g sleeper ROM and and Brooksyx's cm7's to see what exactly are the changes that need to be made to enable mms without messing up the functionality of the ROM.
Thirdly, and the most complicated route would be to use the following thread and basically cook the ROM itself and enable mms.
http://forum.xda-developers.com/showthread.php?t=1081239
I will continue to edit this thread as my thought process progresses.

The hardest part about Virgin Mobile MMS reception is the way in which it is sent. Essentially, it is "encrypted". This is why you will receive messages from "9999999999" with a bunch of incomprehensible characters in the message. There is information sent within the message that has to be stripped ahead of time and then the message can be interpreted correctly. All of the Virgin Mobile roms have an edited framework that makes this work. Essentially, even if the rom's APN settings are "unlocked", merely editing the APN settings would only allow for you to send MMS, not receive.
For receiving, you are on the right track with the editing of the APNs and the CDMAdispatcher.smali file, but every time the rom is updated, if there are changes to the framework, (which there inevitably are), the fix no longer works. That's why, as of now, there is only a fix for Cyanogen for Virgin flashed Epics. Now that we know what's going on and which files to edit, it's entirely possible to edit all of those files for each specific rom, but I wouldn't hold out much hope for having a universal flashable fix. There really isn't an "easy" fix as of now to get this working.

I guess I am lacking a bit on how apn manager works as well. My interpretation is that apn manager essentially changes your active apn configuration to "send" mms based on carrier? Couldn't the apn manager.apk essentially be modified to send VM mms. I guess I would think the protocol for sending through VM would be standardized while the receiving would be specific to device?
Also I am curious about mmsdispatcher.smali code, as code editing is extremely tedious per each ROM trying to find the parts specific to mms, which segments need to be edited just to enable mms, so it can be copied and pasted from ROM to ROM and device to device, if even possible?
Sent from my Xoom using xda premium

All that APN manager does is allow you to edit the APN so that the phone can communicate with the MMS server of the specific carrier you want. For certain carriers, just using APN manager or editing the APN settings from the standard APN menu will be more than enough to send and receive MMS. The problem lies with the way in which VM dispatches MMS, (which requires framework edits.) The other issue is that some roms don't allow 3rd party edits to the APN, much like CM9, so APN manager doesn't necessarily work all the time. It is fairly easy to edit the APN settings in Android, so as long as you have the settings, you shouldn't really need APN manager. (If you don't have the settings, APN manager won't help you very much anyway.
The CDMAdispatcher.smali issue is a bit more complicated. The code that decrypts the MMS from Virgin is the same no matter what, but it needs to be written into the rom-specific CDMAdispatcher.smali file, making sure that you don't break any dependencies. Then you have to recomple classes.dex, put it into the framework. If the framework changes, your fix breaks. The framework changes from one version of CM9 to another require a review, patch, and re-build of framework.jar. If you couldn't go from one version of a single rom to another without having to recompile, then you wouldn't be able to go from one rom to another.
You can do a universal APN edit to get send to work, but receive requires more custom work. A lot of that is explained in detail in the original flash to VM thread that you posted. Thankfully, Brooksyx created his own thread for the MMS fix a while ago. It has the flashable fix for CM7 CM9. He updates the CM9 one as soon as the new version of CM9 drops. You can find it here He may have more insight into creating for different roms, but the code has to be added to the .smali file, which is rom-specific, then you recompile, place it in the framework, and then edit the framework within the rom. It's a big job, and there's no generic fix, (at least not yet.)

I am making some headway here although I am a bit confused about some of the scripting. Can anyone tell me what ".line xxx" in the script of the cdmasmsdispatcher.smali file represents or what it references, so if I reedit I correctly script this.

Updating CM9 remove manually added APN setting?

I did a quick search but it didn't show anything, so sorry if my search fu was weak.
If I flash the latest CM9 daily onto my phone will it remove a manually added APN? I had to manually add my Rogers LTE apn today to get it to work correctly, and I want to know if I should write down the settings before doing my next update.
Thanks

[FIXED] GO SMS Pro Group Text/Messaging

So on my NS4G, I used GO SMS Pro for group texts. However, on this phone, it seems like the MMS (group texts show up as MMS) isn't being downloaded on 3G. I can't send group texts either on 3G. However, on Wifi, it works fine. Is there a set of APN that needs to be changed or something for Sprint?
Not sure why it would work fine on NS4G on Sprint, but not this phone.
Thanks
EDIT: Got it fixed. Somehow the APN was screwed up. Had to delete the old APN and install the correct one. Everything is working as it should now.

Are you using Google Voice now? Google voice doesn't work with MMS's

ippikiokami said:
Are you using Google Voice now? Google voice doesn't work with MMS's
Click to expand...
Click to collapse
No, I only use GVoice for voicemail. I use my regular cell # for texts/sms/mms. With Go SMS Pro, when you send group texts, it gets converted to MMS. My problem is that on 3G, it doesn't work; the texts never get sent. However, on wifi, it works fine.

Seems like mms works on stock messaging app on 3G, but with stock, you can't send group texts. On Go SMS Pro, mms only works on wifi, but not on 3G.
Can anyone else try sending mms using Go Sms Pro on 3G and see if it works?
Thanks

jblazea50 said:
So on my NS4G, I used GO SMS Pro for group texts. However, on this phone, it seems like the MMS (group texts show up as MMS) isn't being downloaded on 3G. I can't send group texts either on 3G. However, on Wifi, it works fine. Is there a set of APN that needs to be changed or something for Sprint?
Not sure why it would work fine on NS4G on Sprint, but not this phone.
Thanks
EDIT: Got it fixed. Somehow the APN was screwed up. Had to delete the old APN and install the correct one. Everything is working as it should now.
Click to expand...
Click to collapse
Could you post a step by step tutorial for this by any chance?
I'm having the exact same problem and I'm not sure on how to reinstall an APN

I got it from this post: http://forum.xda-developers.com/showpost.php?p=30536253&postcount=2
This is what I did:
1. Install APN Backup and Restore from the play store
2. Make it an system app (either use root explorer or other file manager to move it there and make sure the permission is set)
3. Reboot
4. Open the app, click menu, and disable ICS check
5. Backup the APN (this way you have it backed up just in case)
6. Delete APNs
7. Use this APN that is from GS3 Sprint to restore APNs
8. Reboot
Hopefully that should fix the issue. I'm not sure if there's some default APN from LGOG, but I don't have that one.
If it does not fix your problem, you can always restore your older APN that you backed up.

jblazea50 said:
I got it from this post: http://forum.xda-developers.com/showpost.php?p=30536253&postcount=2
This is what I did:
1. Install APN Backup and Restore from the play store
2. Make it an system app (either use root explorer or other file manager to move it there and make sure the permission is set)
3. Reboot
4. Open the app, click menu, and disable ICS check
5. Backup the APN (this way you have it backed up just in case)
6. Delete APNs
7. Use this APN that is from GS3 Sprint to restore APNs
8. Reboot
Hopefully that should fix the issue. I'm not sure if there's some default APN from LGOG, but I don't have that one.
If it does not fix your problem, you can always restore your older APN that you backed up.
Click to expand...
Click to collapse
Not sure if this fixed anyone else's Go SMS Pro group messaging mms problem but it didn't fix mine. However I did find that if I just turn off LTE (4G) and just use CDMA (3G) group messaging works just fine. Hope this helps.

[Q] How to clear mmsc proxy in APN settings?

I'm running the FK23, but am on Boost so I need to change the APN settings to properly send and receive MMS, and I would like to just stay with the stock messaging program. I can access the apn settings, but I want to remove the mmsc proxy which is stock sprint, but the mmsc proxy field cannot be empty. How do I clear it?
Thanks

Just put a zero
Sent from my SPH-D710 using xda app-developers app

GPadraic said:
I'm running the FK23, but am on Boost so I need to change the APN settings to properly send and receive MMS, and I would like to just stay with the stock messaging program. I can access the apn settings, but I want to remove the mmsc proxy which is stock sprint, but the mmsc proxy field cannot be empty. How do I clear it?
Thanks
Click to expand...
Click to collapse
thats strange im on boost n my text n mms work finen i didnt do any thing. . . i saw a zip file somewhere i cant remember that u can flash thru recovery that fixes it . . but i only used it when i was on the joyride rom. . . here I found it

[Q] Help me Regarding Some Questions

Hello, first of all i am new in this forum and new in using android cellphone.
i have purchased LG G2 unlocked.
can you please help me regarding few questions.
1. i want to change my mms settings from root access because i cannot find any option in mobile phone
i am unable to send or receive mms
2. i want to change my Data Settings like mobile no, owner's name, emails and Internet settings APN or etc from root access..
the data setting which we can view from ##data#
i am using my phone in Pakistan, on UFONE Network
i have LG G2 LS980 Sprint Version
my phone is rooted and i have root browser installed as well
please help me to fix these questions
Thanks

Hello, welcome to a great site with loads of info on our model, plus 100's of other android models!
1. Get an APN app from the google playstore, such as Tweakker or Offline Apn, use it to get access to the APN menu then manually add the APN settings you need.
2. You can make changes in that ##DATA# menu, you just need to get your MSL #, when you hit edit, a box pops up, enter the MSL and it will allow you to edit these fields, I only changed 2 fields in that menu MMSC and Multimedia to my carrier.
Hope this helps you out, best of luck!

Cronic2009 said:
Hello, welcome to a great site with loads of info on our model, plus 100's of other android models!
1. Get an APN app from the google playstore, such as Tweakker or Offline Apn, use it to get access to the APN menu then manually add the APN settings you need.
2. You can make changes in that ##DATA# menu, you just need to get your MSL #, when you hit edit, a box pops up, enter the MSL and it will allow you to edit these fields, I only changed 2 fields in that menu MMSC and Multimedia to my carrier.
Hope this helps you out, best of luck!
Click to expand...
Click to collapse
Thansk for the quick response and welcoming me.
i had installed tweakker but there is not pakistani networks available in that app and about offline APN can you tell me the exact name of the app please.
Thanks

no problem, cheers..... it is called Offline SIM APN Database, use the free version and hit the "search APN settings for this SIM" button, then pick a carrier (any will really work, just to get the menu) , then hit the "Go to Android APN Settings" button there a menu will pop up and you can add a new apn, enter your needed APN settings.

Cronic2009 said:
no problem, cheers..... it is called Offline SIM APN Database, use the free version and hit the "search APN settings for this SIM" button, then pick a carrier (any will really work, just to get the menu) , then hit the "Go to Android APN Settings" button there a menu will pop up and you can add a new apn, enter your needed APN settings.
Click to expand...
Click to collapse
Thanks i have tried this app and it's not saving the apn setting saying problem in creating apn setting
and also tried APN Manager pro.. not working anyone. i i have i think there is not any option are working
it's saying " you are using Ice Cream Sandwich. change is this version no longer allow for the direct writing of APN settings. the setting found will need to be manual copy and pasted. click go to android apn settings. and create a new apn entry then press back button on your device and press the copy button next to the value on the screen. return to the apn entry and paste each value into the new apn one by one" .when i am going there nothing works there is not any option of creating new APN or anything.

find YOUR apn settings for YOUR carrier, open the APN settings menu, add NEW APN, fill out required fields, then you hit the menu button on your phone and choose SAVE APN, it will save and you will have a radio button next to the newly created APN!

Cronic2009 said:
find YOUR apn settings for YOUR carrier, open the APN settings menu, add NEW APN, fill out required fields, then you hit the menu button on your phone and choose SAVE APN, it will save and you will have a radio button next to the newly created APN!
Click to expand...
Click to collapse
tried that also. unable to get/open "Add New APN" option

when you are in the android APN settings menu, you have to hit the phones menu button, the 3 lines, it will say add new apn

Cronic2009 said:
when you are in the android APN settings menu, you have to hit the phones menu button, the 3 lines, it will say add new apn
Click to expand...
Click to collapse
this method also didn't worked.

oh ok, well sorry then, I am out of ideas, thats how I got my APNs to work on my g2, best of luck!

Cronic2009 said:
oh ok, well sorry then, I am out of ideas, thats how I got my APNs to work on my g2, best of luck!
Click to expand...
Click to collapse
i have tried all things but i am also not getting my setting done. except one thing which is upgraded OS. but i am aware that if my phone get locked or i will be unable to install new firmware. i dont know which firmware i have to install after 4.2.2. and i have not tried that before.

Reardon said:
i have tried all things but i am also not getting my setting done. except one thing which is upgraded OS. but i am aware that if my phone get locked or i will be unable to install new firmware. i dont know which firmware i have to install after 4.2.2. and i have not tried that before.
Click to expand...
Click to collapse
I would not upgrade to kk 4.4.2 to fix this issue, I personally would look into changing radios, you might also try doing the SIM unlock tutorial look for the part about making APNs stick.
Are you sure you have root permissions? confirm with root checker, root with ioroot if not

Cronic2009 said:
I would not upgrade to kk 4.4.2 to fix this issue, I personally would look into changing radios, you might also try doing the SIM unlock tutorial look for the part about making APNs stick.
Are you sure you have root permissions? confirm with root checker, root with ioroot if not
Click to expand...
Click to collapse
ok i will try to sim unlock tutorial and yes i am sure i have root checker installed. and rooted with ioroot..
and i am afraid if my phone get locked by trying that. i have't tried that before.
and can you tell me which method i have to try ?

i need other help also last night i received and long sms but when i am trying to send, it's sending into multiple parts. and one another problem is i cannot send or receive mms. can anyone tell me how to fix this problem also.
i have seen a setting came automatically in my apn panel now i can add new apn but i can use GSM Internet but cannot send mms or receive.. please help me to fix this issue
when i am sending MMS i am getting "Unfortunately,messaging has stopped".
Please Help Me

Please am in Ghana and i dont know how to do the G2 setting cos i dont have any APN or access point name to do it onlu 4G setting and Network mode so can u help me to do the internet settings

Read this post http://forum.xda-developers.com/sprint-g2/general/how-to-root-zvi-install-twrp-t3410650
At Permanent SIM unlock step 2 for instruction.