yashsingh1/xdaforums huggingface dataset:
[Sprint Samsung Galaxy S 4 Android Development] autoprime:
hmm seems you are second person with this issue. Can you give more details. Did the unlock work fine and then GSM disappeared after you flashed the MF9 baseband back? I am wondering if there is something in the stock touchwiz rom that removes GSM if your phone has never been activated. Seems Samsung likes to go out of their way to stop people from using the phones if they were never properly activated first.

more testing will have to be done... but since my phones have been activated.. I'm not sure I'll ever be able to experience the same thing.

At what point was the unlock working? MDC baseband? If so what happens if you flash that baseband back? Could you try flashing a full MDC stock tar to see if maybe that lets you keep GSM settings. It may be possible that people that have never activated their phone first must downgrade to MDC to use GSM.
[Sprint Samsung Galaxy S 4 Android Development] autoprime:
you lost custom recovery after flashing MDC? MDC tar file flashes the modem.img only... not sure how a recovery could be replaced.
[Sprint Samsung Galaxy S 4 Android Development] pvinodnayak:
I'm gonna revert back to MDL firmware, I'm gonna lose root and custom recovery, unlock and then wait for MF9 OTA, what say?
[Sprint Samsung Galaxy S 4 Android Development] autoprime:
When you flashed MDC in Odin... did you use the zip in this thread? The 50MB file. Or did you use a full stock MDC tar?

This seems like some sorta issue for SPH-720 that have never been activated first. I am not sure what the solution will be at this point. I've only been working on phones that have been activated on Sprint first.

Other than the people experiencing this issue trying different things.. I am not sure how to get to the bottom of this.

You mention MDL firmware... does that mean you are going to flash a full MDL stock tar? If so, yes please try that and see if the GSM/UMTS option has returned. If it returns... then it may be that MF9 cannot be used at all. AOSP roms are always an option as well.

Keep me posted on the progress. Details are important.

I am going to try to reset my phone 100%.. restoring all original partitions. see if i can replicate what's happening.
[Sprint Samsung Galaxy S 4 Android Development] myamex:
I still don't understand how you lose root and recovery after you flash the modem.

Did you odin the modem+kernel+rom file instead of the one that posted in OP?

This is what I would do:

1. Root

2. Flash Recovery

2. Get MSL

3. Unlock

4. Flash MF9 Modem

5. Flash MF9 ROM
[Sprint Samsung Galaxy S 4 Android Development] HeXacTa:
unlock worked fine on both on MDC and after re-upgraded to MF9.. but still no APN setting.
[Sprint Samsung Galaxy S 4 Android Development] autoprime:
oh ok. you had said in your post before you lost gsm setting. i thought maybe you were having same issue as pvinodnayak. He can no longer switch from CDMA/LTE to GSM/UMTS... he only has CDMA options now.

So you are saying you can enable GSM/UMTS, correct? And that the SIM is still unlocked?

To edit APN settings you must be rooted. Edit your build.prop file which is found in the /system folder. You can use something like ES File Explorer or Root Explorer or any app that lets you browse the /system folder. In the build.prop file you have to add the following lines at the bottom of the file and then save it:

ril.sales_code=LOL

ro.csc.sales_code=LOL

Reboot your phone. Now you are able to edit the APN menu which is usually greyed out. To get into the APN menu you can do ##DATA# > Edit > Enter SPC/MSL > Scroll down and select the Others/More menu > Select the LTE APN Settings menu.

Another way to get to the APN menu is to create a shortcut to the menu. Checkout my thread HERE on making a shortcut. That same shortcut will bring you to the APN menu easily.
[Sprint Samsung Galaxy S 4 Android Development] autoprime:
can you post a screenshot from your phone showing this screen?
[Sprint Samsung Galaxy S 4 Android Development] autoprime:
hmm ok that doesnt help anything after all. :(

Something strange is going on tho. there should have been no reason to lose root or recovery if only flashing the MDC modem.

let us know what happens after flashing a full stock tar in odin... MDL. And if MDL GSM works... then try to upgrade to MF9.
[Sprint Samsung Galaxy S 4 Android Development] doctorman:
Thanks...

I just Rooted the phone with stock, downgraded to MDC , installed recovery, installed SAC's MF9 and unlocked it.

I get on Tmobile HSPA easily and everything looks good we will see how it will hold outside USA.

Thanks to everyone who contributed to this..

Looking forward to MJA workaround..

As long as I can use an MJA ROM and avoid the nagging OTA updated I will be happy.
[Sprint Samsung Galaxy S 4 Android Development] imbmiller:
you need to set it wcdma_umts_only in the cdma diag menu and make sure you don't have a roaming guard on. see the thread in my sig we have a few convos going on about domestic unlock.
[Sprint Samsung Galaxy S 4 Android Development] vboyz103:
i actually did follow the instruction set you provided, all the way to clicking the 6x that I skipped cuz mine didn't reboot like u said. But let me go back and 2x check.
[Sprint Samsung Galaxy S 4 Android Development] vboyz103:
Went back and double check my work, and now I can receive calls. however, it worked only in TW types ROMS (used triforce 4.1), but when I switch to CM11, and did the *#*#4636#*#* and set it to WCDMA Preferred and it didn't work. I couldn't find any roaming guard options in CM11 as I saw those in TW Rom.
[Sprint Samsung Galaxy S 4 Android Development] dataman:
So you are saying that this works with the MJA 4.3? I have been holding off updating triforce to 4 and 4.1
[Sprint Samsung Galaxy S 4 Android Development] imbmiller:
Try doing the whole thing with the watchdogs again after you flash cm 11? Reboot, mod apn reboot and you might be golden.

Also hop over to the domestic unlock thread for further questions please!
[Sprint Samsung Galaxy S 4 Android Development] vboyz103:
You know I'm not so sure what Triforce runs as stock base, but it did work. I just wanted a TW rom that I can do the ServiceMode and Triforce is first thing I picked. :)
[Sprint Samsung Galaxy S 4 Android Development] Manik24:
Hey guys, I recently updated to 4.3 OTA from Sprint and now out of contract. dont want to flash my phone to pageplus...

my phone is rooted and baseband ends in MJA.. also when I put ATT or Tmobile sim, it does not give me any sim error. Sprint said they unlocked it but this can be used only outside US for GSM..

is it possible to flash a GSM ROM or anyway to get a GSM signal on my device ?
[Sprint Samsung Galaxy S 4 Android Development] imneveral0ne:
This question has been answered many times in this thread. Plus there is another one devoted specifically to this question in the general section.
[Sprint Samsung Galaxy S 4 Android Development] Manik24:
I actually read all the pages but it seems users with the baseband MJA are not going ahead with the process. I will also search in the general section.

thanks !
[Sprint Samsung Galaxy S 4 Android Development] essojay:
Baseband MJA done here! downgraded the baseband to MDC and ##3424# to change to DM mode (*#0808# did not work) and *#9090# change to UART all DANK! all done.

No need for special APN software here as its natively present.

Hope this helps!!

bR
[Sprint Samsung Galaxy S 4 Android Development] rodmc123:
i just bought a Sprint Galaxy s4, is this method gonna work internationally (i'm in Chile) with the phone even if it has bad ESN?

thanks.
[Sprint Samsung Galaxy S 4 Android Development] fergdizzle9090:
so is there any possibility of using tmobile 4g lte? whats the fastest speeds with t-mo on a sprint s4?
[Sprint Samsung Galaxy S 4 Android Development] doctorman:
I have a phone unlocked without activating it ever on sprint..

it keeps asking for activation on sprint

you know when you get a new phone and it tries to automatically activate ...

this process messes up the GSM int. connection that I have

it found the correct network and connected a few minutes, after that the lock icon appear again in the network operator and tries to actovate teh handset..

how can I disable that .

==================

Answer:

to disable the automatic activation from sprint

in the ( Root explorer or ES Explorer) > system > app > SprintAdnroidExtension.apk DELETE it.

I renamed it 1st but it came back.. maybe it was my mistake but deleting it helped.

then restart the phone
[Sprint Samsung Galaxy S 4 Android Development] cramhead:
if you cant send a text message check out

http://xdaforums.com/showthread.php?t=1506812

http://wiki.cyanogenmod.org/w/SMSC_Updates
[Sprint Samsung Galaxy S 4 Android Development] hayat4:
How did you do all that? can you detail the steps?
[Sprint Samsung Galaxy S 4 Android Development] doctorman:
mostly by following this

http://xdaforums.com/showthread.php?t=2530610

and here is the Sac's ROM

http://xdaforums.com/showthread.php?t=2359590&page=123
[Sprint Samsung Galaxy S 4 Android Development] hayat4:
Having same issue, can you help with this? How di dyou get into all those menus and if it not activated on sprint, can it still work after domestic lock? sorry for the noob questions :cool:
[Sprint Samsung Galaxy S 4 Android Development] doctorman:
Guys I still have the issue with sprint self activation..

How can I stop it?

Tried this and it did not stop it?!

to disable the automatic activation from sprint

in the ( Root explorer or ES Explorer) > system > app > SprintAdnroidExtension.apk and rename it to SprintAdnroidExtension.apk.bak

then restart the phone[/QUOTE]
[Sprint Samsung Galaxy S 4 Android Development] hayat4:
[/QUOTE]

how do you get into root explorer or ES explorer?
[Sprint Samsung Galaxy S 4 Android Development] doctorman:
Seriously?

Download Root browser from play store for free..

https://play.google.com/store/apps/details?id=com.jrummy.root.browserfree&hl=en

please google a bit to avoid wasting forum space and peoples time. I don't mind answering questions but come on put some effort in it yourself

---------- Post added at 04:27 PM ---------- Previous post was at 04:24 PM ----------

I guess the rename did not work..

BUT Deleting it fixed it.

Now I am wondering how much damage the automatic Sprint activation wizard has done to my settings..

I can connect to the mexican network but I get disconnected in minutes

any idea?
[Sprint Samsung Galaxy S 4 Android Development] hayat4:
jee whiz .. thanks man .. if i hadnt looked around, i would have not asked. regardless .. the renaming did not work for me either .. i wonder what implications deleteing it has .. let us know if you experience anything.
[Sprint Samsung Galaxy S 4 Android Development] doctorman:
deleting that file fixed sprint activation wizard.

I am trying to get it registered on movistar in mexico. it can find the network but it does not register.. it seems it is on network but nothing works and it disconnects by itself in few minutes.

I am afraid maybe the sprint app has changed my settings
[Sprint Samsung Galaxy S 4 Android Development] doctorman:
Guys I am going to need your help here ..

Here is the screen shot of my Status

So I am on the movistar network but I am "out of service"

I do not see the ICCID .. is that normal?

----------------

Can I just flash the Movistar Mexico ROM via recovery and forget about sprint..

what are the chances I will brick my phone without any chance of recovery?

it is a big zip file with

Quote:

Do I use recovery to install this ROM? copying the file to my phone and running it with recovery failed...

Which file should I use?

could be an issue with the phone? not sure why I do not see the ICCID but the sims seams like to work.. it sees the movistar network.. and connects briefly eventhough not functionally
[Sprint Samsung Galaxy S 4 Android Development] keyro:
hi guys, does factory reset remove the sim unlock???
[Sprint Samsung Galaxy S 4 Android Development] rimgarciag:
You don't want to flash that firmware. Unless. You want a paperweight phone. If you have the sprint galaxy s4 flash only firmware for that phone. To get signal with movistar download hiapn app and try it. It may work.
[Sprint Samsung Galaxy S 4 Android Development] doctorman:
So my issue is not just movistar, I tried Movistar sim and telcel sim cards in the phone.. they both act the same

it connects but I cannot dial, or receive call, nor data,.

could the issue have been caused by sprint auto activation wizard ? I deleted it but perhaps it probably caused the damage before it was deleted..

I used HiAPN Autoset
[Sprint Samsung Galaxy S 4 Android Development] rimgarciag:
I don't think so I unlock it this method and domestic. I even did a one click Odin tar and didn't lose it.
[Sprint Samsung Galaxy S 4 Android Development] keyro:
another question that im looking but cant find in the thread, if one updated to 4.3 can i still downgrade the baseband MJA. im asking this because im planning to get one with 4.3 ota
[Sprint Samsung Galaxy S 4 Android Development] rimgarciag:
I don't think so because I deleted those too. But I'm on tmobile and it work. I unlocked this method and domestic. It working fine. Also I noticed that your phone number is not a regular number, that may be the cause. But I don't know.

---------- Post added at 12:05 PM ---------- Previous post was at 12:03 PM ----------

If you already are full mja. You cannot go back. But if you are in mf9 bootloader and rom with mja baseband then you can go back.
[Sprint Samsung Galaxy S 4 Android Development] keyro:
so that means no sim unlock, no purchasethen
[Sprint Samsung Galaxy S 4 Android Development] doctorman:
Can he just odin the whole MF9 ROM and baseband if the phone is MJA?
[Sprint Samsung Galaxy S 4 Android Development] mr64fixit:
I also get L720 v4.3 with mja and it was ok downgrading modem via odin 1.85 to mdc and root after with CF-Auto-Root-jfltespr-jfltespr-sphl720.tar but s4 unlocker freeze and sim still invalid, any more ideas?
[Sprint Samsung Galaxy S 4 Android Development] CyberpodS2:
Apparently not if the OTA was taken. It seems once the MJA bootloader is installed it's permanent. (short of someone finding a hack in the future??) If the phone was upgraded to MJA using this method: http://xdaforums.com/showthread.php?t=2277480 then it's possible to go back.
[Sprint Samsung Galaxy S 4 Android Development] keyro:
anyone that could help with this?????
[Sprint Samsung Galaxy S 4 Android Development] mr64fixit:
I flashed boot (kernel) to mdc and now L720 show error messages and not boot up

i download full mdc and not take it, now download full mja and flash again and will see soon and post here.
[Sprint Samsung Galaxy S 4 Android Development] lowlow5683:
possibly put a virgin mobile sim card in

If I do this would it be possible to switch my phone to virgin mobile I'm currently on sprint now

---------- Post added at 11:57 PM ---------- Previous post was at 11:55 PM ----------

Could I now switch from sprint to virgin mobile

---------- Post added at 11:57 PM ---------- Previous post was at 11:57 PM ----------

Could I now switch from sprint to virgin mobile
[Sprint Samsung Galaxy S 4 Android Development] mr64fixit:
flash this L720VPUEMJA_L720SPTEMJA_L720VPUEMJA_HOME.tar via odin 3.07 and phone ok again :) but need unlock solution
[Sprint Samsung Galaxy S 4 Android Development] Pigbenis12:
Thread has gotten too big to read all. Anyone knows if it's ok to flash a custom rom after the unlock has taken place? Will it keep the unlock?

I'm still on stock rom but it's gotten buggy. Lots of app crashing, can't access play store, etc.
[Sprint Samsung Galaxy S 4 Android Development] DAFTEK:
I just installed 4.4 kitkat with these exact instructions http://www.youtube.com/watch?v=XlYPFxr2O2w#t=140

rooted and t-mobil prepaid worked right out of the box as you mentioned. no unlocking no nothing...

I downloaded this rom http://xdaforums.com/showthread.php?t=2544474
[Sprint Samsung Galaxy S 4 Android Development] keyro:
the guy in the video says that is for Samsung Galaxy S4 I9505, how did you do it on your sprint model?
[Sprint Samsung Galaxy S 4 Android Development] Pigbenis12:
So you're telling me the unlock will stick after installing a custom rom? Confirmed? And you unlocked by using the method from this thread?
[Sprint Samsung Galaxy S 4 Android Development] DAFTEK:
Rom is for T-mobile. Download the rom from the link I provided and use his exact instructions in the video. So far testing everything works better then the sprint rom.

---------- Post added at 07:30 AM ---------- Previous post was at 07:25 AM ----------

That is correct. I wiped the phone and installed the new kitkat from the link I provided and i did not need anything else installed, when phone booted with the new rom i had signal. The only thing I am not sure is why I cant get 3g and only edge where I am with the t-mobile prepay.
[Sprint Samsung Galaxy S 4 Android Development] keyro:
guys one question. im stucked with a MJA bootloader, can i do this with MJA or its just with MF9
[Sprint Samsung Galaxy S 4 Android Development] DAFTEK:
I am on MF9
[Sprint Samsung Galaxy S 4 Android Development] DAFTEK:
Ok, so now on this rom the ##3424# or *#0011# does not work anymore! :(
[Sprint Samsung Galaxy S 4 Android Development] Pigbenis12:
I believe those diaper codes are for CDMA versions. Wouldn't you, or I, need an apn app to fix data issues?
[Sprint Samsung Galaxy S 4 Android Development] AlpineMan:
You can modify build.prop to allow Sprint dialer codes again.

ro.csc.sales_code=SPR
[Sprint Samsung Galaxy S 4 Android Development] DAFTEK:
Hmmm wont let me save it with es file explorer
[Sprint Samsung Galaxy S 4 Android Development] AlpineMan:
You need to enable write on system partition in ES File Explorer.
[Sprint Samsung Galaxy S 4 Android Development] pvinodnayak:
Use root explorer & root access.
[Sprint Samsung Galaxy S 4 Android Development] tronac:
Most likely your area is having AWS coverage from T-mobile. This phone is unable to lock on to AWS frequencies to receive 3G. I am looking for a way to enable AWS on this phone.
[Sprint Samsung Galaxy S 4 Android Development] dino_mk:
One question, does someone on his network APN settings use "username" and "password".

My phone can't send username and password to the provider so I can't get data connection. (I have friends that work for this mobile company so they provided my connection logs)

On different provider that is not using username and password in his APN settings there's no problem in getting data connection.

Sent from my SPH-L720
[Sprint Samsung Galaxy S 4 Android Development] pvinodnayak:
Just put the APN name and save. It works for the whole world.
[Sprint Samsung Galaxy S 4 Android Development] tronac:
Which phone company is this?
[Sprint Samsung Galaxy S 4 Android Development] dino_mk:
No it doesn't work for

T-Mobile Macedonia. I must put username and password.

T-Mobile Macedonia.

Sent from my SPH-L720
[Sprint Samsung Galaxy S 4 Android Development] DAFTEK:
Please keep us informed. :good:
[Sprint Samsung Galaxy S 4 Android Development] leonleonleon:
I want to know will this medhod work for Samsung Galaxy S4 SCH-R970 U.S. Cellular locked?
[Sprint Samsung Galaxy S 4 Android Development] pvinodnayak:
The OP heading is for SPH-L720, Don't try, you might brick your device.
[Sprint Samsung Galaxy S 4 Android Development] keyro:
GUYS is there anyway to do this with mla bootloader? have an s4 with it so any help would be appreacited
[Sprint Samsung Galaxy S 4 Android Development] leonleonleon:
my last wuestion is for the SPH-L720 model.

i am from greece and my friend in US has a SPH-L720 model that has been locked as bad esn from Sprint because of not paying the contract (not stolen), so it cant work anymore on sprind.

If my friend sends me the phone here to greece and i unlock it (woth this method) can i use the phone here in greece?
[Sprint Samsung Galaxy S 4 Android Development] pvinodnayak:
Downgrade the modem to MDC and then follow the procedures mentioned in POST #1
[Sprint Samsung Galaxy S 4 Android Development] leonleonleon:
so it will work for sure. it is sprint bad esn locked.

i dont want to pay 30$ for shipping and not to get it working after and ship it back if dont work.

everyone that managed to unlock their phones it worked?
[Sprint Samsung Galaxy S 4 Android Development] bogie03:
NICE

great job on this....excelent write up also btw...... i would try this but i dont leave the country...so no need.....would be great if could get att or t-mo sim to work....perhaps one day

STILL GREAT JOB THOUGH!!!
[Sprint Samsung Galaxy S 4 Android Development] imbmiller:
it will work with a bad esn outside of the US right now, however there are efforts afoot to create an international database to combat theft etc so the situation might change in the future.

Confirmed working tmobes h+, straight talk etc. See the guide link in my profile. FYI, completing this guide is step one of the domestic unlock process.
[Sprint Samsung Galaxy S 4 Android Development] bogie03:
so you did this and you have it working on t-mo usa service???? whats the other step to get it working??? if you care to share please
[Sprint Samsung Galaxy S 4 Android Development] imbmiller:
Like I said check my profile for the guide on how to achieve domestic unlock.
[Sprint Samsung Galaxy S 4 Android Development] h20wakebum:
Do you have a mirror to the stock rooted file?

It's telling me 11 hours to download 1 gig..

I'm guessing its on the host server.

So... I actually ended up flashing a KITKAT Rom for tmobile s4. when i put my sim card in, it shows my Tmobile number, the tmobile fast apn shows up... but... the signal is blank (no bars).

I have no idea why i cannot get it to show my signal.

Any ideas on that? do i need to flash a sprint kernal if i'm using the tmobile rom? you mentioned in the section advanced user to install tmobile rom but no other instructions.

Thanks in advance.
[Sprint Samsung Galaxy S 4 Android Development] raphsabb:
Quick question. I have the MJA baseband, would I still need to flash the MDC or would it be fine with the MJA?
[Sprint Samsung Galaxy S 4 Android Development] bighleo114312:
im from mexico and i just bought a l720 s4 running 4.3 and i follow the instruccions and now im using it with my iusacell sim. thanks mate...
[Sprint Samsung Galaxy S 4 Android Development] razielpr:
The unlock tool doesn't work for me when I hit unlock immediately it says completed phone rebooting but the phone doesn't reboot any suggestions??
[Sprint Samsung Galaxy S 4 Android Development] rodmc123:
i unlocked the phone but 3g is not working, it says lte:esm - 29 emm - x unable to stablish a wireless data connection

im not in the US so i have a foreign sim and the phone is in gsm/umts mode, i get signal but i cant use 3g. help plz!
[Sprint Samsung Galaxy S 4 Android Development] rodmc123:
someone please! i cant believe im the only one with this "lte esm 29" issue.. also when i put "only WCDMA" my phone lost the signal, it works only with "only gsm" mode or "gsm/prl".

i think maybe it could be because i was on stock 4.3 (i downgraded the modem to mdc before the procedure).

please help!
[Sprint Samsung Galaxy S 4 Android Development] dino_mk:
Was having the same problem, solved with reflashing modem again.

This was on 4.2, from MF9 down to MDC then back to MF9 and then just reflashed MF9 modem again.

I hope it will work for you to.

Sent from my SPH-L720
[Sprint Samsung Galaxy S 4 Android Development] rodmc123:
i tried flashing MF9 but failed in odin.. so ive been going from MJA to MDC and viceversa..

but nothing.. i always get that lte esm 29 error.. now i upgraded to MK2 and the same.. (i also had a lot of issues, when i upgraded to MK2 my wifi wasnt working!!, had to flash the complete MK2 firmware from odin).
[Sprint Samsung Galaxy S 4 Android Development] rodmc123:
i there a way to go back from 4.3 to 4.2.2???

if i flash stock 4.2.2 in odin should work ? i think that maybe because i was on 4.3 i cant get 3g... or maybe because the phone it is not activated in sprint.

:(!!