yashsingh1/xdaforums huggingface dataset:
[Sprint Samsung Galaxy S 4 General] kluteni:
So i have the MDC baseband version on 4.4.2 ... I have been trying to unlock this stupid phone for a while now with no luck. I have seen that there is no downgrading with the new bootloader as well.. I am also using ATT. Has anyone seen anything with 4.4.3 with ATT working on this unlock?

How do you change network mode back to GSM? instead of auto?
[Sprint Samsung Galaxy S 4 General] Soggytoast111:
If you are on MDC modem then you should have no problem getting into the service mode and changing the settings. Although I'm not on 4.4 so I don't know for sure. What is the specific problem that you're having?

You can change the network mode by going Apps->Settings->More Networks->Mobile Networks->Network Mode-> "Preferred network mode: GSM/UMTS"
[Sprint Samsung Galaxy S 4 General] arys64:
OK so here's my Story.

I had no issues on of my network and wanted to try out this method, so I did. I had a lot of problems since I'm not in US to try it with a tmo sim or any other. Since I had a lot of problems I wanted to revert back, so I did this: http://xdaforums.com/showpost.php?p=50079389&postcount=386 and it fixed it, partially. Now I get signal and everything except H+, only E if I put it in GSM/UMTS, which before doing this I had no issues. How can I fix it?

If you need more info, please ask I'll provide it.

EDIT: I fixed it by changing the Network Mode to Automatic
[Sprint Samsung Galaxy S 4 General] kluteni:
i am new to android development and flshing.. the problem i am having is unsoft bricking my phone which i do believe i have it fixed now.. i will report any future problems as they arise.. have to get past reformat
[Sprint Samsung Galaxy S 4 General] kluteni:
Now having problems finding a way to get msl tool for 4.4.2 firmware... any links or suggestions ?!
[Sprint Samsung Galaxy S 4 General] kluteni:
Just got everything working besides MMS picture messages which is not a big deal right now. I would like to see if there is any way to get the 4G LTE to work instead of the H+ though.. overall great guide and thank you
[Sprint Samsung Galaxy S 4 General] daniel4653:
Impossible on T-Mobile since they don't use the same bands for LTE.
[Sprint Samsung Galaxy S 4 General] samurai3032:
Need Major Help

I have been trying this for the passed week, no luck at all, every time I reboot, for a millisecond I get full bars, with the ICCID saying HOME, then its gone. All I'm left with is Emergency Calls Only/No Service. I'm trying with a net10 sim. also somewhere in the process of reset and reODIN of the roms so I can restart the whole process again, I lost the sprint boot logo, now it just boots on the SAMSUNG logo. I've fallowed the whole process word for word. under BAND SELECTION, I've tried picking LTE ALL last, WCDMA ALL last and GSM ALL last, on different tries, but all the same no service. I think I did the alphaprime right cuz i no longer see invalid sim. Also my SPH-L720 has never been passed MF9, and yes I am on MDC modem
[Sprint Samsung Galaxy S 4 General] samurai3032:
proof in pics
[Sprint Samsung Galaxy S 4 General] samurai3032:
Update, I got like 1min of connection(text and calls only), while playing with the network settings in the phone setting, but when i added the net10 APN and rebooted to see if it will stick, it was gone again, i deleted the APN and tryed every single combo of network settings, and no luck
[Sprint Samsung Galaxy S 4 General] arys64:
Have you tried putting the Network Mode on Automatic? Try that and see what happens, That fixed it for me.
[Sprint Samsung Galaxy S 4 General] ecs87:
Samurai, your IMEI is blacklisted. That's why this is happening.
[Sprint Samsung Galaxy S 4 General] samurai3032:
I have tried changing network to auto, it puts me back on Sprint

is there a way around the blocked IMEI, and how do you know its blocked, the one I bought this from said it was clean
[Sprint Samsung Galaxy S 4 General] ecs87:
Auto never worked for me. For some people it works for maybe they think they're on GSM when they're still on Sprint.

Anyway, go to checkesnfree.com and plug in your IMEI into the US IMEI Blacklist database. Clowns out there will sell you a clean esn phone and report it stolen to get another one days later. It's dirty and i hope these people get what they deserve one day.

There is a way to fix this, but you're going to need to be somewhat familiar with DFS CDMA tool.

Sent from my SPH-L900. Please hit the thanks button if I helped you out!
[Sprint Samsung Galaxy S 4 General] samurai3032:
I have the DFS tool, link me the tut
[Sprint Samsung Galaxy S 4 General] ecs87:
There is no tutorial...This is a FREE solution developed by me in order to get your phone working again AND it's a very clean NON EFS corrupting solution. I know z3x and/or nspro came out with solutions but I've considered their methods very dirty. It messes with things in the EFS that shouldn't ever be touched.

You're going to need to do some homework. Specifically: finding the (NEW) 16 digit password for Samsung Sprint phones, and getting the SPC of your particular phone. After that the rest of the process is pretty self explanatory (and no... I'm not going to mention "the rest of the process" here for legal reasons).

Sent from my SPH-L900. Please hit the thanks button if I helped you out!
[Sprint Samsung Galaxy S 4 General] yansa:
how do you do for ATT because all explanation is for t-mobile.

let me know because i want for ATT.
[Sprint Samsung Galaxy S 4 General] ecs87:
Same exact process IIRC. The only thing different will be your APN settings.

Sent from my SPH-L900. Please hit the thanks button if I helped you out!
[Sprint Samsung Galaxy S 4 General] erail1213:
is there a way to do this for the s5

I have followed some steps and I can't seem to get past the servicemode part of engineering menu. This is in the sprint t s5
[Sprint Samsung Galaxy S 4 General] ecs87:
I'm going to have to point out the obvious. This is for the Sprint S4. It says SPH-L720 in the title. I'm pretty sure the model number of the Sprint S5 isn't SPH-L720. You're going to have to wait till someone comes up with a solution of an unlock for the Sprint S5 or...you can feel free to experiment with yours and post back :good:
[Sprint Samsung Galaxy S 4 General] AndroidKing:
T-mobile MMS fix

For all who is having MMS problem only way to fix it that worked for me was to flash a T-mobile rom. MMS started to work after that even wifi calling.

Heres the rom i used and everything worked out of the box

[ROM][STOCK][4.4.2][TMO Base][[ODEX]/[DEODEX+DEBLOAT-v1.3]]KitKat 3-29-2014

http://xdaforums.com/showthread.php?t=2679913
[Sprint Samsung Galaxy S 4 General] samurai3032:
like you said easy, all i did is find my MSL, after that it was all downhill, set my IMEI to 0, now I can Call, [MENTION=4959296]ecs87[/MENTION] thinks for all the help, [MENTION=2555672]imbmiller[/MENTION] you too
[Sprint Samsung Galaxy S 4 General] ecs87:
LOL glad it works with an IMEI of 0. You might just want to change the FAC section of your original one in case someday the US IMEI Blacklist adds the imei of 0 to it too.

Sent from my SPH-L900. Please hit the thanks button if I helped you out!
[Sprint Samsung Galaxy S 4 General] coolstone:
Same as I saw.

---------- Post added at 10:50 AM ---------- Previous post was at 10:44 AM ----------

Hey there,

Thanks so much for writing this good thread while we want to switch to AT&T from Sprint!

I followed all the steps and found it work on GSM/UTMS. I can make calls and messaging. But no data working...any data. But the Status shows it's under AT&T network, and HSPA:11. I don't think that's LTE. Mobile network state show is Disconnected.

And there is an error message for mobile data:

*********************

Unable to establish a wireless data connection:

LTE: ESM - 33 EMM - x

**************************

Any one succeed in getting LTE? I am in Washington D.C. area.

If I can't get LTE, I'd like to go back to Sprint and sell this phone, just get a AT&T S4 which is much easier.

Any suggestion?
[Sprint Samsung Galaxy S 4 General] Soggytoast111:
This phone cannot get LTE coverage on AT&T. The radio cannot pick up their LTE band. You should still be getting HSPA+ (4G) data though which is a decent speed.
[Sprint Samsung Galaxy S 4 General] coolstone:
rmc16,

Question for you since you seems like senior here and know this better:

I followed every step of these instructions. Now I got AT&T calling and text working, but not the data.

Any idea? Thanks for help!
[Sprint Samsung Galaxy S 4 General] timmyrberry:
I keep getting "check apn settings" help!!!!! Schr530m

THE BASICS

-Metro PCS phone & Coma sim card

-WHITE SAMSUNG GALAXY S3

-MODEL #SCHR530M

I TRY AND SEND A MMS THROUGH WIFI & WITHOUT WIFI AND I STILL GET A NOTIFICATION THAT MY APN SETTINGS ARE WRONG .

SO I GOOGLED WHAT'S THE CORRECT WAY ...I TRIED A FEW AND STILL NO LUCK. WTF DO I DO? PLEASE ANYONE KNOW?
[Sprint Samsung Galaxy S 4 General] twill1987:
Help!!!

I have spent literally the last 24 hours trying to follow this tutorial. I have attempted to flash the MF9 Firmware in Odin,

but EVERY time I try to flash any firmware below the 4.4.2 NAE Odin has an error, (usually when the aboot file is being flashed)

I seriously have lost it. I haven't slept, I'm losing sanity here. I tried to access the service menu on my current firmware, and all I get is "NO service"

IMEI CERT: NA" I tried menu, back, menu, select, 1. Nothing shows up. I have tried flashing so many firmware files it's making me sick. I know I am not as well equipped knowledge wise with these things, but can SOMEONE PLEASE HELP ME??! I have to get this phone working on T-Mobile for my brother in-law and I told him I'd have it ready tomorrow. ANY HELP would be extremely appreciated!! I also thought I could just flash the file in CWM to 4.2.2 stock rom, but the recovery has denied the installation from my sim card so far. I seriously just need to know how to do this on 4.4.2, and how to avoid getting the error in Odin everytime the .aboot file is being flashed from previous firmware versions.

Thanks for taking the time to read this!
[Sprint Samsung Galaxy S 4 General] coolstone:
Thanks everyone!

I just found the mistake. APN!

I installed the HiAPN and go back to the apn settings and found it's editable now. Then I updated it to the AT&T apn I found. Then the H+ SHOWED UP and I now get connected!

Thanks you guys soooooo much for helping here!
[Sprint Samsung Galaxy S 4 General] ecs87:
You should've spent the last 24 hours reading the last few pages of the thread lol. I've repeatedly said throughout this thread that you flash the MODEM ONLY. DO NOT TRY TO FLASH ANY FULL FIRMWARE FILES, ESPECIALLY ONES BELOW YOUR CURRENT BUILD! YOU WILL SOFT BRICK! If you're on 4.3 or 4.4.2, LEAVE YOUR FIRMWARE ALONE! Flash the MDC modem (ONLY!!! ONLY THE MODEM, NOTHING ELSE) and the service menu will work (along with the international unlock program). You DO NOT and CAN NOT flash the FULL MF9 firmware in the OP if you're on 4.3 or 4.4.2. The OP is severely outdated.

---------- Post added at 01:14 PM ---------- Previous post was at 01:12 PM ----------

You're in the wrong section buddy. This is for the Sprint L720 (S4) domestic unlock. Looks like you have a R530 which cannot be unlocked as far as I know; and if your APN settings are wrong and you haven't tampered with the device, I'd try to send it in for service.
[Sprint Samsung Galaxy S 4 General] twill1987:
Thanks, I'm an idiot.
[Sprint Samsung Galaxy S 4 General] droidboy29:
Can anybody tell me if this guide will work with a sprint galaxy s 4 mini with a bad esn.
[Sprint Samsung Galaxy S 4 General] twill1987:
Flashed Mf9 modem on 4.4.2

Okay so I've followed your procedure to flash MF9 modem, and I'm currently running L720VPUFNAE_L720SPTFNAE_L720VPUFNAE_HOME.tar.md5 4.4.2 firmware. The phone lags quite a bit with Mf9 modem but I'm able to get to the dialer and into service mode. All it says when I get there is "no service" I tried the menu, back, menu, select 1, but not dice. The secret service menu doesn't populate. What am I missing? Thanks again for your help, bout ready to give up.
[Sprint Samsung Galaxy S 4 General] ecs87:
Dunno if it works with the MF9 modem. Use the MDC modem. And sometimes the service menu may take up to 20 seconds to pop up. You're right about pressing back and keying input of 1.

Sent from my SPH-L900. Please hit the thanks button if I helped you out!
[Sprint Samsung Galaxy S 4 General] twill1987:
Security menu fake security control
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
Even if your phone was an L720 (which it's not), it would not work on any other carrier with a bad ESN.
[Sprint Samsung Galaxy S 4 General] droidboy29:
Well thats wierd seeing how the guy that wrote this tutorial says in the first paragraph on page one of this tutorial that his sprint galaxy s4 had a bad esn and he now has it fully working on the t mobile network. And I figured since the s4 mini and s4 are almost identical besides the size and a few OS features that this might also work with the s4 mini. Besides the bad ESN only has to do with sprints CDMA network it shouldnt effect the GSM features. Shoud it?
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
All US carriers share IMEI blacklists. It appears (although it's not confirmed) that if a phone is blocked from a certain network for nonpayment, it may still work on other carriers. Lost/stolen phones definitely won't work on other carriers. And as far as this method working on your phone, feel free to try but don't blame OP if it wrecks your phone. Besides the physical size and OS features, almost everything else is different about them too. Processor, screen, battery, radio, etc.
[Sprint Samsung Galaxy S 4 General] Wickster:
How did you go about installing a TMo ROM? Did you do the sim-unlock procedure on the OP first and then install a TMo ROM after?

If so, did you do a factory reset wipe before installing?

Or did you do the sim-unlock procedure on the Tmo ROM?
[Sprint Samsung Galaxy S 4 General] Emma101:
What APN settings did you use for straight talk?? because I cant seem to get data or mms working...any help would be much appreciated.
[Sprint Samsung Galaxy S 4 General] samurai3032:
Have you tried adding AT&T APNs?

From what research I did, it seams that this happens when your phone's ICCID doesn't match your network's, which it shouldn't, AT&T, Verizon, and Sprint look for that before giving you data, if you call them, they will most likely ask you to dial ##72784# for hands free activation, so far I haven't seen a work around, I had the same message, but my IMEI was bad. The unlock works Great for Prepaid 4G/LTE services, but the best you will get from them is H or H+. For AT&T you might as well get an AT&T S4, but that wont be free. Hope this helps, if so hit that "THANKS"
[Sprint Samsung Galaxy S 4 General] coolstone:
I already got the Sprint S4 working on AT&T network! The problem for that error message is because of my APN setting was not correct. Now it works very well! Of course I only get H+ since the Sprint S4 don't have the AT&T LTE band.

Thanks anyway!
[Sprint Samsung Galaxy S 4 General] samurai3032:
if the regular S4 have many variants and the tuts for one wont work on the other, like wise with the mini.

as for bad ESN, like [MENTION=3163377]iBowToAndroid[/MENTION] said, Blocked IMEIs are across the board, if you succeed in unlocking your device, you still will not have any service (From personal experience), you are going to have to find a way to "Fix" your IMEI (Editing IMEI is Illegal) google can help with that.

---------- Post added at 04:39 PM ---------- Previous post was at 04:35 PM ----------

Herestraight talk apn
[Sprint Samsung Galaxy S 4 General] CyberpodS2:
What is required to install a TMO rom on a Sprint phone? Do I need to change all the phone type designators in the install script?
[Sprint Samsung Galaxy S 4 General] Supertacomonkeyexplosion:
thanks

confirmed .

I was on NAE and downgraded to MDC.

No problems with WIFI

worked like a charm.

THANKS [MENTION=2555672]imbmiller[/MENTION]

Should I upgrade back to NAE?
[Sprint Samsung Galaxy S 4 General] jcota193:
I do not see WCDMA...WHERE IS IT

I do not see an option to leave it at wcdma....i only see cdma or cdma/lte or gsm/umts or automatic....am i missing something? This may have to do with the reason why i cannot get data or picture messaging to work. Please help

---------- Post added at 02:30 AM ---------- Previous post was at 02:02 AM ----------

WHEN ADDING BOTH BUILD.PROPS "ril.sales_code=lol AND ro.csc.sales_code=lol" ARE YOU SUPPOSED TO ADD EACH ONE ALL ON ONE LINE OR IS IT EVERYTING BEFORE THE EQUAL SIGN GO ABOVE AND AFTER THE EQUAL SIGN GOES BELOW. I AM USING THE BUILD.PROP EDITOR APP...PLEASE HELP, I DONT REMEMBER EXACTLY WHAT IT SAYS IN THE APP BUT THERE ARE TWO SECTIONS TO TYPE IN THE NEW BUILD.PROP...I BELIEVE THIS MAY HAVE TO DO WITH THE REASON I DONT GET DATA OR PICTURE MESSAGING. ALSO I DO NOT SEE WCDMA LIKE EVERYONE ELSE IS TALKING ABOUT....PLEASE HELP
[Sprint Samsung Galaxy S 4 General] samurai3032:
two separate lines
[Sprint Samsung Galaxy S 4 General] ecs87:
I personally would. On GSM devices if you downgrade the modem for service you need to put the modem back to the current build. I don't think the Sprint S4 suffers from this but there may be things going on behind the scenes that aren't right despite us not realizing it because we can't see it. To be safe, if you are on NAE I'd throw the NAE modem back on.

---------- Post added at 10:42 AM ---------- Previous post was at 10:38 AM ----------

You didn't go through the instructions if you're just looking for an easy way out. How I got it to stick at WCDMA only is by following the instructions in the OP and selecting WCDMA all only when it came to the point to select GSM, WCDMA, or LTE bands.

After reading through the instructions enough times to understand that it's not a 3 click process, you're going to also need to do some reading through a few pages of this thread. It's been stated that you do NOT need to do ANY build.prop edits. The reasons were previously mentioned.
[Sprint Samsung Galaxy S 4 General] Dez Playamade:
4.4.2 ota update before I unlocked

This works with the 4.4.2 OTA NAE update. I just downgraded the modem to MDL and followed the O.P. and reflashed my NAE modem. It also sticks if you do a factory restore. I restored my phone several times and it is still unlocked. Also sticks after update via samsung kies. Also confirmed working on metro pcs but I did not do the apn so I only got EDGE im sure you can get their hspa+ with the right apn. Currently on at&t with sprint sph-l720
[Sprint Samsung Galaxy S 4 General] Supertacomonkeyexplosion:
can you link me to the NAE modem you used?

I have been reading reports of locked up dialers, and a ton of diffrent FC. are you showing any symptoms?

I want to go back to NAE, and start sifting through some roms.... but slightly nervous.

thanks
[Sprint Samsung Galaxy S 4 General] Dez Playamade:
I got the modem off of a xda thread just google it and it only acts up due to my ktoonz kernel with rare reboots but not lately after some tweaking and I never had any problems while on stock 4.4 after or before the modem flash
[Sprint Samsung Galaxy S 4 General] AndroidKing:
Late Reply Sorry

Sorry for the late reply because i dont have the phone(S4) anymore... I did the unlock procedure first then rooted and flashed a TMO rom (and i did do a factory reset b4 installing the rom). Be for i sold it, everything worked, right now my friend owns it and i put it on metro for him via sim card and data and mms work like a charm

---------- Post added at 01:38 PM ---------- Previous post was at 01:33 PM ----------

All I did was root it, flash/install TWRP and then flash a tmo rom and it came with it's own kernel and it work fine, when i had my tmo S4 i used to flash i9505 roms all the time.
[Sprint Samsung Galaxy S 4 General] ecs87:
I haven't experienced any of the symptoms you say here but I've only played with the unlocked L720s on MDC as long as it took to unlock them. It's expected of you to experience these symptoms though based off of other devices. I know all of the GSM devices REFUSE to play nice with an older modem on a newer firmware. Calls won't work and neither will wifi. The M919 has a very delayed boot when you downgrade the modem. It's always wise to pair everything together on the same build after downgrading to perform service.

Most of the time when I need a modem I search for the model name and last three build name letters on Google. Like "L720 NAE modem". Works most of the time. Other times I have to download the entire firmware file, rip out the modem and nonhlos files, and tarball them in cygwin for convenience.
[Sprint Samsung Galaxy S 4 General] twill1987:
Will this method work for the Sprint Galaxy S4 Tri-band model?
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
THIS method? No. Completely different modems. But there may be a similar method to unlock the L720T
[Sprint Samsung Galaxy S 4 General] ignaciogh:
Hello everyone!

Will this method work on a Galaxy S5 Sprint Unactivated?

Anyone knows about a method to activate / unlock it? (I live outside US)

Thanks
[Sprint Samsung Galaxy S 4 General] ecs87:
Have you tried the things mentioned in the OP (minus flashing the L720 files unless you want to risk a brick)? If you have access to the service menu then you'll might have access to everything you need if they didn't change the layout of the service menu...
[Sprint Samsung Galaxy S 4 General] CyberpodS2:
Data works for me, but I can't complete phone calls. It seems to connect but not completely. Then it takes a long time to hang up. Also incoming calls go right to voicemail and the phone never rings. This is on tw and aosp roms. Any thoughts on where to start? I have switched to Verizon but would like to keep my Sprint phone on T-Mobile.
[Sprint Samsung Galaxy S 4 General] ecs87:
Odin the NAE full firmware. If you're already on stock NAE, check your baseband. If it's MDC (what you used to get to the service menu) you need to flash the NAE modem.
[Sprint Samsung Galaxy S 4 General] CyberpodS2:
I am still on mf9 firmware. I have the NAE baseband. The closest I seem to have gotten is with either a TMO Carbon build or PACMAN with the install script modded to install the GSM files on the L720 instead of the CDMA files. Both have wifi and data but still can't make a phone call correctly. I can now send or receive the call and it connects, but I seem to have no sound in the call either way. I don't wanna lose my bootloader so I will try flashing a stock NAE rom and try that unless you don't think that will work.
[Sprint Samsung Galaxy S 4 General] ecs87:
Trying to do anything on a custom ROM is just asking for trouble. If you're opposed to the new bootloaders then flash the full firmware of your current build. With the recent changes in nvitems and efs formats using different build radios is a no no unless you're servicing.
[Sprint Samsung Galaxy S 4 General] ignaciogh:
Thanks for the reply!

I can access the service menu pressing *#0011#, but it see this screens cycling sequentially: (I cant post links)

1)

No Service

NETWORK: UNBLOCK

IMEI Certi: PASS

2)

RRC:IDLE, Band 2

PLMN: 722-34

RX:9813 RI:-92 CID: 1f2426

TX:9413 Eclo:-10 RXCP: -102

L1:PCH_Sleep PSC: 405 DRX:64

SERVICE: LIMITED

Speech VER: FR FR FR

therm: 0 LNA:0

SIB19 None

PA STATE: 0 (APT), HDET: 0

NETWORK: UNBLOCK

IMEI Certi: PASS

3)

GSM: IDLE

PLMN: 722-310

Tra: 520, BCCH: 65535, CID:ff

Rx Pwr: -76, Dtx: 0

RxL: 0, RxQ: 0, TxL: 0

Speech VER: FR FR FR

VOC: FullRate

NETWORK: UNBLOCK

IMEI Certi: PASS

I think there is one or two more screens showing (GSM 1900 is one of them).

I cant seem to control anything. Pressing INPUT + 1 or SELECT + 1 doesnt have any effect.

In the OP, another post is referenced, where talks about unlocking an S4 with a specif software. I dont think I can do that step. Would this work without doing it?

Should I root the phone to start?

Thanks!