yashsingh1/xdaforums huggingface dataset:
[Sprint Samsung Galaxy S 4 General] ecs87:
The international unlock most likely won't work. If you can't get to the various parts of the service menu this process probably won't work either. Yes you should be able to get to the service menu without doing an international unlock. Don't root your phone hoping for something to magically change. Root does nothing other than give you elevated privilege.
[Sprint Samsung Galaxy S 4 General] NewTalk:
Nothing but trouble

I have unlocked many Sprint GS4's even ones that are running 4.4.2. This one I'm trying to do is giving me absolute hell. I am rooted on stock with the MDC baseband with NAE firmware. For some reason this phone will not allow me to change sim class control from GSM to UMTS. I have done this procedure many times and have always had success with no problem until now.

It finds T-Mobile then disconnects and says it's not available, and yes the IMEI is clean.
[Sprint Samsung Galaxy S 4 General] ecs87:
Flash stock NAE FULL firmware. Do a ##72786#. Downgrade to MDC MODEM ONLY. Run intl unlock. Go through the service menu steps. Update modem back up to NAE. Win.

If you've unlocked with a box, PLEASE tell us. The box solutions are dirty. They mess up the EFS and touch things that they shouldnt. They're GSM pros...However this doesn't exactly happen to be a pure GSM device
[Sprint Samsung Galaxy S 4 General] deadly59:
So I did this and got it to work. I flash my rom to a t-mobile rom (wicked v10) I was wondering should I upgrade the modem to sprint NAE or t-mobile NB4 link below is the rom I have running

http://xdaforums.com/showthread.php?t=2265998
[Sprint Samsung Galaxy S 4 General] deadly59:
n/m I figured it out. After I downgraded the modem and SIM unlocked it I flashed to a stock t-mobile rom to see if everything was working (wifi calling doesn't work but with unlimited talk it doesn't really matter now does it? lol) so after that I flashed to the rom above then flashed just the mf9 modem

http://xdaforums.com/showthread.php?t=2338919

everything besides wifi calling is working :) (and virtual voice mail but that is because of the plan I am on.)

BTW I am on wal-mart family plan thing that is powered by t-mobile not t-mobile its self. I get 4G but with the plan no 4G LTE so I can't confirm 4G LTE works. $40 a month.... unlimited talk, text, web (5gb of high speed data then throttled down to 2g speed) is a lot better than $80 and no 4G LTE in my area :D
[Sprint Samsung Galaxy S 4 General] deadly59:
I have been reading post and there are mixed answers... so I downloaded everything and sim unlocked it. Used t mobile wicked 10 rom and everything works. Only thing was the modem was still downgraded. I tried to flash modem onlu NAE that unknownforce pulled but it would brick sound. I flash it to the MF9 modem + bootloader on the same post where the NAE modem only is and I got sound back. So can I flash to a tmobile latest modem and get it to work? In theory if it doesn't work I should be able to flash the mk9 + bootloader. Just worried if I test it out and flash to their modem I might be unable to flash back. Or does anyone know how I can flash to NAE and not kill the sound? Think it has something to do with running 4.3
[Sprint Samsung Galaxy S 4 General] ecs87:
NEVER...EVER...use another device's modem. With the new secured bootloader it most likely won't take it anyway. If it ends up corrupting your EFS you may have a brick that can only be solved by writing to the nv item partitions via Odin, which hardly anyone knows how to do.

If you're firmware version is MF9, use the MF9 modem for the L720. If your firmware version is NAE, use the NAE modem for the L720. Match them together or be doomed to sound, wifi, and signal issues.
[Sprint Samsung Galaxy S 4 General] deadly59:
See that is the problem I am having I'm on mf9 but when I update the firmware to NAE it bricks my sound then I downgrade to mf9 bootloader with mf9 firmware. Was thinking if I have mf9 bootloader and flash their modem it would be updated
[Sprint Samsung Galaxy S 4 General] ecs87:
You mean the NAE modem? If you've loaded the NAE full firmware and downgraded to MF9 I'd like to know how... are you sure you have the MF9 bootloader or the NAE one? FWIW, update to full NAE via Odin 3.07 or 3.09. THEN flash a ROM. DO NOT mess with anything else after that.
[Sprint Samsung Galaxy S 4 General] deadly59:
Oh, no I'm running straight mf9 everything. I want to update just the modem to NAE but it always kills sound. Attached is a pic of what I'm running if that helps
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
If you're on MF9 everything, then EVERYTHING has to be MF9, including your modem.
[Sprint Samsung Galaxy S 4 General] ecs87:
Agreed with the above. Never mix and match. We USED to be able to benefit from newer modems on older firmware but now...A lot has changed. Damn you 4.3 and 4.4.2!
[Sprint Samsung Galaxy S 4 General] deadly59:
haha ya I am kinda mix and matching I couldn't figure out how to change the APN on TriForce 5.3 so I changed it to a t-mobile rom (wicked 10) but its based off of 4.3. the modem I am running MF9 baseband and wanted to update it to the latest version to get better reception. I can't figure out how to do it without bricking my sound. I think maybe if I flash it to a 4.4.2 ROM than try it I might have better luck... I'll wait till my days off :) attached is my set up
[Sprint Samsung Galaxy S 4 General] hopatz:
I have L720 NAE 4.4.2 did i need flash direct to mdc modem?

Or need step by step downgrade baseband.. Please advise.

Thanks
[Sprint Samsung Galaxy S 4 General] CyberpodS2:
Just an update for anyone who might be in the same boat. I had it working originally and then at some point it the voice call function got weird. (like when I changed modems prolly) All my data and wifi was fine but the voice call stuff was boned. As it turns out like quoted here, I switched back from NAE modem to MF9 (I have the MF9 firmware still) and all is good to go now. Thanks bro for helping us man!

Oh and for reference sake, I am running a TMO build of Carbon Rom built by ShadySide.
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
Yes, you can flash modem only
[Sprint Samsung Galaxy S 4 General] Dez Playamade:
Is there an international carrier free firmware for this phone?
[Sprint Samsung Galaxy S 4 General] ecs87:
Even if there was, how would you get past the secure bootloader? This isn't the ICS days where you can flash any variant's build onto your phone (and possibly brick it...hence the need for a secured bootloader from Samsung/qualcomm).
[Sprint Samsung Galaxy S 4 General] AndroidKing:
I think you could try i9505 roms and see thats what i used to use on my tmo galaxy (M919)
[Sprint Samsung Galaxy S 4 General] Dez Playamade:
I see 4g enabled: false when I use the sprint diagnostics app maybe we need a toggle mod to turn it on and off like wifi
[Sprint Samsung Galaxy S 4 General] Dez Playamade:
I **** u not...I believe the answer to this is in the build prop can someone investigate?
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
No there's no international firmware. Some users are able to use T-Mo ROMs to some degree of success I think. But what is it that you're trying to accomplish, with the whole 4G status and comment about the build.prop?
[Sprint Samsung Galaxy S 4 General] ecs87:
I'm 99.9999% sure the answer isn't in the build.prop. I think the answer was explained earlier and commented on the supported bands
[Sprint Samsung Galaxy S 4 General] Dez Playamade:
I read elsewhere that someone got the full 4g network on a nexus device after build prop edits but I cant get the ones under data to change

---------- Post added at 01:27 AM ---------- Previous post was at 01:22 AM ----------

They were getting the same H+ data connection at first
[Sprint Samsung Galaxy S 4 General] AndroidKing:
On the Nexus 4 it has Lte band 4 which tmo is supporting which sprint phone doesnt support lte bands tmo and at&t
[Sprint Samsung Galaxy S 4 General] Juicy227:
Just followed all the steps and successfully unlocked my phone!
[Sprint Samsung Galaxy S 4 General] Brainfeederz:
anyway to do this on mk2 ?

please desperately need to unlock my phone
[Sprint Samsung Galaxy S 4 General] ecs87:
It's been throughly explained how to perform this unlock on any build up to the current one (NAE). You're going to have to do some reading through the thread.
[Sprint Samsung Galaxy S 4 General] Brainfeederz:
Thanks i actualy got this to work with a t-mobile sim and i get data , text/mms & voice. i'm recieving H+ :)

But only one problem when i'm on the phone i can't hang up the call unless the other person hangs up 1st

I'll press hang up and nothing happens. I can still hear the other caller. I'm running Pac-rom for t-mobile.

any way around this or a solution ? please and thanks
[Sprint Samsung Galaxy S 4 General] ecs87:
Again, mentioned previously in the thread. I don't know why people perform baseband hacks and then expect a custom ROM to work. You guys are exponentially adding factors causing problems. Stick with the stock ROM from Sprint. After the unlock, Odin your current build firmware's MODEM ONLY! Meaning if you're on MF9 and downgraded the modem to MDC for the unlock, put the MF9 modem back on. If you were on MK2 after the unlock flash the MK2 modem. Everything will work fine. At this point leave everything (firmware and connection settings) alone. I've done this for about 50 people and not one has come back with an issue.
[Sprint Samsung Galaxy S 4 General] Brainfeederz:
Okay i understand. So i won't be able to use any custom roms at all after i unlock and after i flash back to the mk2 modem? i like CM11 & custom themes :(

will i be able to at least root my phone or update to 4.4.2 without losing unlock ?

please reply asap
[Sprint Samsung Galaxy S 4 General] ecs87:
You MAY be able to use custom ROMs but the issues you face can easily be resolved by sticking to stock because...everything works right out the box. Custom ROMs are cool...but troublesome in our case.

You can do anything you want minus resetting the nv/efs with ##72786# (note to everyone, DO NOT EVER RESET YOUR PHONE WITH THIS DIALER CODE). You can wipe data/cache through recovery and your unlock will stick. You can upgrade to NAE without losing your unlock. You can root without losing your unlock. The only thing you cannot do is dial that code I mentioned. THAT will force your device to re lock itself (domestically, your international unlock SHOULD still be active).
[Sprint Samsung Galaxy S 4 General] Brainfeederz:
Thanks a lot man , appreciate it
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
Say someone who had unlocked performed an SCRTN (or even RTN, since that also wipes programming info). Would you be able to re-unlock domestically, from what you know of how the process works?
[Sprint Samsung Galaxy S 4 General] steveokinevo:
Does this work for boost mobile?
[Sprint Samsung Galaxy S 4 General] ecs87:
They should be able to. They're just going to need to repeat the process (downgrade modem, use service menu to unlock, put current build modem back on, profit!)

---------- Post added at 05:36 PM ---------- Previous post was at 05:35 PM ----------

Boost Mobile is CDMA not GSM. You need to FLASH to CDMA carriers, there's no such thing as "unlocking" to a CDMA carrier. Flashing phones is NOT for the faint of heart.
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
Good to know. Unlocked another one today, it's ridiculous how easy it is!
[Sprint Samsung Galaxy S 4 General] ecs87:
It really is. After the first 10 I didn't need the service menu instructions anymore. Makes the process go by so much faster lol
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
I'd never be able to memorize all those steps lol
[Sprint Samsung Galaxy S 4 General] Roxisayshi:
stuck in firmware upgrade

I need some help here. I am stuck in Point 1 where it says to refer to http://xdaforums.com/showthread.php?t=2486134

I followed the steps but when I started the ODIN flash process, it failed and now I am getting error "Firmware upgrade encountered as issue. Please select recovery mode in Kies & try again". Can someone please help me out here?
[Sprint Samsung Galaxy S 4 General] ecs87:
You're flashing the whole firmware file. The OP is outdated. You're going to need to get out of your soft brick and follow the updated instructions throughout the thread.
[Sprint Samsung Galaxy S 4 General] Roxisayshi:
Thanks! I am going to come out of soft brick. Can you please let me know on which page of this thread can i find updated instructions?
[Sprint Samsung Galaxy S 4 General] levitation:
lol

Thank you for this awesome How to for the Sprint galaxy S4!

I've sucessfully unlocked my sprint s4. MY question is, is there any way to possibly back up the settings that were changed for the unlock, such as via NV items, EFS backup, etc? Where is this information exactly stored? Maybe it would be possible to backup the new settings, and restore to another Galaxy s4, as sort of an "One click" solution to unlocking the Sprint s4? Has anyone tried?

Good work!:good:
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
Pages 12 and 13 - if you're signed in to XDA (more posts per page)

I'm not sure if it's possible to make a one click that will perform the service menu steps. You really don't need a one click anyways - the whole process takes all of 5 minutes. One clicks are for lazy people. Better to actually learn something about the process and your phone.
[Sprint Samsung Galaxy S 4 General] jumpman6235:
I have the same issue, Followed OP post and now its soft bricked.. but I cannot get out. I think my NAND has been currupted?

EDIT: nevermind, I was trying to flash firmware + bootloader and it kept failing. I tried just firmware and it worked
[Sprint Samsung Galaxy S 4 General] levitation:
lol

Lazy? Hardly. But call it what you want. I like to be efficient. I've learned the process. Now I want to learn the process of making it into a sort of one click solution, for convenience. The same way there are a lot of one click solutions on XDA that we don't have to perform manually. Not to be lazy but to be more efficient. And it is possible. The international unlock is a one click solution, but the same process can also be performed manually. Now can we get to learning on how we can customize this into a one click solution? Any input would be appreciated. Thank you.
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
Sure, go for it :laugh:
[Sprint Samsung Galaxy S 4 General] xpertx:
Emergency Calls only

hello,

Ive followed all the steps on the and successfully unlocked a few L720s. However, i have a few phones that are giving me emergency calls only error. after i finish the domestic unlock process and reboot the phone, they power on and it says T-mobile and kicks to emergency calls only, switches back for a brief second and then back to emergency calls only and remains on that.

I've checked the roaming settings, and the apns as well as different sim cards still same thing. I even tried flashing back NAE after procedure was done, as well as leaving it on MDC and still no luck. anybody have any idea what the issue might be? like i said, on some s4's it works perfect while others it does this. oh and i even tried ##72786# and redoing the steps all over.:confused::confused::confused:
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
Blacklisted. It's the only possible answer, as long as you're sure you have a SIM that works
[Sprint Samsung Galaxy S 4 General] xpertx:
I used that same sim to unlock anther phone today and it worked, but not on this one. i checked the serial number of the device that worked with the carrier they both came up as bad. i checked it under the Checkesnfree.com IMEI/Blacklist checker and it shows they both pass. the sim card im using is a simple mobile. to be specific it says no service on this particular device, i am going to try this same sim with all the procedures on one more phone right now.

EDIT: just tried another s4, does the same thing.
[Sprint Samsung Galaxy S 4 General] Roxisayshi:
Thanks. I was able to recover from soft brick and as a fast step tried to downgrade from NAE to MDC. It worked. But now while I am in MDC, my phone keeps getting hanged with error "Google Play has stopped". It gives me OK button to close the alert but it pops up again and again. Due to this I am not able to follow rest of the steps to unlock my phone with T Mobile SIM.

---------- Post added at 04:50 AM ---------- Previous post was at 04:23 AM ----------

Alright! Please ignore the above post. I was able to find a workaround. Stopped Google Play services which resolved the issue. I will check back later on how to resolve this permanently. As of now I am just focussing on getting my TMobile sim working. I am now stuck in Step 12 of the original post. I am pretty new here and not sure how to go forward on this one -

12) WIFI that sonofa up and search for apn settings shortcut and build.prop editor in the Play Store.

Go into the build.prop editor and add the following two lines:

ril.sales_code=LOL

ro.csc.sales_code=LOL
[Sprint Samsung Galaxy S 4 General] TechShui:
I looked on pages 12, 13, and even 24, 25, 26, 27

There's no new or different method on those pages, I'm also on 4.4.2 KitKat, tried to downgrade, bricked, trying to Odin back 4.4.2 now... but what's the trick here? do you have yours set to display 50 posts per page or something? Because I can't find this "updated method".

Please advise, thanks.
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
I would never trust any website as far as ESN status. The only people who can really tell you for sure are the ones who work for the carrier. And even then, I usually won't trust the customer service department because there are too many idiotic reps employed there. In a real, corporate-owned retail store is best, from what I've found. And there 2 types of blacklists - lost/stolen and nonpayment. I believe in nonpayment cases the phone will still work on other carriers because only the lost/stolen IMEIs are added to the global blacklist. That may explain your situation. Then again, if a 3rd one isn't working, might just be having bad luck. Try doing it again on the ones that didn't work.

Data wipe will probably solve the Play error. As far as step 12, that's not needed for the unlock. You need to read back in the thread.

Hmm I thought signing in showed you more posts by default. I do have 50 posts per page, but it's been that way for so long, there's no way I'd remember if that's a setting that I changed. So start reading at post 500. It really is a very simple process - nothing like the OP (no ROM flashing needed at all)
[Sprint Samsung Galaxy S 4 General] jumpman6235:
I have this same exact issue. Wifi off and MMS works perfect. If i turn it on, it wont work. Did you find a fix?
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
MMS does not work over wifi unless it's coded into your ROM. If you are connected to wifi, but leave mobile data turned on, MMS are actually sent and received via mobile data - it wakes up in the background to send/receive. So even though you may be connected to a wifi network, it's not being handled by wifi.

Post your stats and we'll see if we can help - modem, ROM, any mods, network status, etc.
[Sprint Samsung Galaxy S 4 General] jumpman6235:
There was a different guide than the one posted by OP, I cant find it now

I have stock rom 4.3 with MK2 baseband right now.

I used the international unlock, (http://xdaforums.com/showthread.php?t=2415587)

Then I went into settings (dialer code) and changed a couple things to get it on GSM mode

EDIT: I know MMS will not work over wifi, the problem is that the mobile data doesnt turn on and retrieve/send the MMS. The phone just keeps trying to use wifi
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
So what happens when wifi is turned off, mobile data is turned on, and you try to MMS?
[Sprint Samsung Galaxy S 4 General] jumpman6235:
Correct, when wifi is off the mobile data is on and MMS works perfect

---------- Post added at 09:05 PM ---------- Previous post was at 08:12 PM ----------

So I updated to 4.4 to see if that would fix the problem. It didnt, and now a new problem. I cannot receive MMS, but I can send
[Sprint Samsung Galaxy S 4 General] ecs87:
Are you guys sure it isn't your MMSC setting in your APN? My boss refuses to put that in, thinking customers are fine with talk/text/data but not MMS.

GOOGLE those APN settings! No need to clutter up the thread (for those with APN data/mms issues).

REMINDER: if you cannot enter APN settings, UPDATE. There's no reason to stay on an older firmware than 4.3 (I'd recommend staying away from 4.4: horrible battery drain, signal issues, inaccurate signal icon, etc) and spend the effort to root the phone and edit the build.prop. I'd suggest MK2. And NO you cannot downgrade once you're on Kit Kat (NAE).
[Sprint Samsung Galaxy S 4 General] Roxisayshi:
I was able to resolve all the issues and now my Sprint phone works great on TMobile SIM. Thanks everyone. Thanks meter to OP.

Now, I have further questions -

1. I downgraded my baseband to MVC. Do I need to keep it same all the time. If I upgrade it to NAE, the sim unlock feature will be reverted?

2. Can I install custom roms like AOSP Carbon http://xdaforums.com/nexus-4/orig-development/rom-carbonrom-kitkat-t2630336

My only concern here is that by installing another ROM, will the ability to use any other SIM on Sprint phone will go away or will it stick forever now?

Thanks in advance for helping me out here.
[Sprint Samsung Galaxy S 4 General] jumpman6235:
This issue is not a simple APN error. I have been flashing to stock, changing APN, changing modems, I cannot find a fix
[Sprint Samsung Galaxy S 4 General] ecs87:
Post a screenshot of your APN and what carrier you're trying to go to. Also can you go into ##DATA# and post a screenshot of the MMS settings in there too? One last thing I thought of, on a 4.3 or 4.4.2 modem can you type *#0011# and let me know what the IMEI cert says?
[Sprint Samsung Galaxy S 4 General] jumpman6235:
OK I started from scratch and STILL ended up with the same results. Everything works, I can send MMS without any issues, but I cannot

receive

MMS. Its driving me crazy, how can I send but not receive???

HSPA+, calls, texts, outgoing MMS, all work. Incoming MMS is not!! wtf

IMEI cert: "NA"

##DATA#

im assuing you want MMSC info?

MY APN is this: (I also tried fast.t-mobile.com)
[Sprint Samsung Galaxy S 4 General] twill1987:
Curious about S4 mini

So I'm curious about the S4 mini working on Sprint; have you had any luck trying yours on the GSM domestic sim unlock method you

commented on? I had a client ask me to do it and I'm curious if anyones made any progress getting into the service menu, or getting a compatible modem running on it.. Let me know :)
[Sprint Samsung Galaxy S 4 General] Supertacomonkeyexplosion:
[MENTION=979396]jumpman6235[/MENTION] I'm. Having the same issue with receiving mms.

On stock rooted 4.4 downgraded modem to mdc

APN is correct on net10

Does anyone know if it's possible to change the APN settings in the service menu? I have been playing with it , but don't understand the jargon. Haven't been able to find a breakdown of the options.

It seams to be held up by the way the phone handles mms , and not necessarily APN settings.

A few posts back someone mentions flashing a t mobile rom as a fix.... can anyone confirm?
[Sprint Samsung Galaxy S 4 General] ecs87:
Try entering in your MMS settings into the MMSC portion of ##DATA#. Wonder if it'll be that easy of a fix...

---------- Post added at 08:10 AM ---------- Previous post was at 08:08 AM ----------

Why are people staying on the downgraded modem? Match the modem to the system build and try MMS again. The service menu has nothing to do with the MMS. Other than unlocking the phone with the instructions in the OP, I wouldn't touch anything in the service menu.
[Sprint Samsung Galaxy S 4 General] jumpman6235:
IT WORKED!!!

I installed this rom:

http://xdaforums.com/showthread.php?t=2679913