yashsingh1/xdaforums huggingface dataset:
[Sprint Samsung Galaxy S 4 General] ross4747:
i am currently attempting to do this but i've tried multiple usb cables and two different computers neither will files through odin to my phone. They all end up failing, i read somewhere the new mk2 locked the bootloader i guess my questions is how do i unlock it and Has anyone else has this issue?
[Sprint Samsung Galaxy S 4 General] daniel4653:
Sprint GS4 bootloaders have NEVER been locked. You might be thinking about Knox but that won't affect you from being able to unlock the phone.
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
Bootloaders are not locked on this phone. Are you sure you don't have an L720T?
[Sprint Samsung Galaxy S 4 General] daniel4653:
Just did the unlocking on my GS4 and tried it with cricket. Picked up my brothers Cricket sim. HSPA+ , MMS, texting, calling, and internet all worked. :)
[Sprint Samsung Galaxy S 4 General] ecs87:
He's probably trying to load the entire firmware file when instructions throughout the thread explicitly state to flash the MDC MODEM ONLY!
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
Or that.

Granted, OP is usually what people pay attention to. I know better, especially with such an old thread. Wish OP could revise
[Sprint Samsung Galaxy S 4 General] TechShui:
Is this statement still true? Isn't there flashable zips for the MDL modem?
[Sprint Samsung Galaxy S 4 General] snekiam:
I was able to do it, but it tripped knox. I flashed the file in odin, and then flashed a recovery after the modem failed. Surprisingly, I was now on MDL, with a tripped knox flag. I was then able to unlock the phone and am happily on the now defunct $35 gophone plan, and have been for 7 months now.
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
The bootloader is not locked and does not prevent anything from being done (just don't downgrade firmware). Flashing modem tars with Odin does NOT trip Knox. If you flash a recovery in order to flash a modem zip, yes, Knox will trip
[Sprint Samsung Galaxy S 4 General] snekiam:
The phone would not boot after the modem flash, it would only boot after the recovery flash. Maybe there is a better way to get the phone to boot that does not involve tripping the knox flag?
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
I have done many of these and have never encountered that issue. If it happened to you, you did something wrong.
[Sprint Samsung Galaxy S 4 General] snekiam:
It is entirely possible I did do something wrong.
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
I edited the post after thinking about it. Even if it wasn't stock, I still can't think of any reason a modem flash would make it soft brick. As long as you have the correct file and are doing the flash in Odin correctly, it should have been okay. Custom modems cannot be created ala kernels or ROMs. Even a non-stock device will have a stock modem.

But, I guess without seeing the device or knowing what was on it, it's possible that it was customized in some way that gave you the hangup. Glad you did get it working though
[Sprint Samsung Galaxy S 4 General] snekiam:
I did this in January of this year, so I do not remember exactly what I did, but I do remember it soft bricking, and I do remember that it would only boot after I flashed a valid tar file. Otherwise, it would complain about a failed odin flash on boot.
[Sprint Samsung Galaxy S 4 General] ecs87:
You can't flash the entire firmware file. The modem and NONHLOS were probably earlier in the tarball than sboot, which will fail if it's a lower version than your current one; and this will halt the entire flash. BUT whatever got successfully loaded WILL stay. So you can load a MDC entire firmware file and luckily end up with the MDC baseband before it fails the entire flash. To avoid all of this "confusion", only the modem.bin and NONHLOS.bin should be in the .md5 or .tar file that you're flashing in Odin. IF you see ANY more than those two files, you're loading the wrong thing and welcoming a brick.
[Sprint Samsung Galaxy S 4 General] aviara:
Is there any way to unlock while on a AOSP ROM like CM11?
[Sprint Samsung Galaxy S 4 General] ecs87:
AFAIK the dialer codes will only work on touchwiz, so no. On another note I was doing some development on a S5 unlock. I was searching through some files and caught a .db file that has a list of MCC and MNCs from what seemed like blocked carriers (domestic at&t and T Mobile MCC/MNC). I'm wondering what removing these entries and injecting the .db file will do. Maybe it'll make the domestic unlock process less painful. Downside: will not stay through an update or reset... Upside: if it works, I may be able to package it into a one click that shouldn't require root.
[Sprint Samsung Galaxy S 4 General] ross4747:
i am attempting to flash stock MDC rom, but odin is failing every time, i was previously on cyanogenmod. i tried two different computer's and even wiped everything and fresh installed the drivers but it is still failing. that is why i thought the bootloader could have been locked. this phone might now be soft bricked. if anyone has any idea what this might be let me know, im not a complete noob ive actually been flashing roms since the droid incredible years ago but for some reason i am now stuck.
[Sprint Samsung Galaxy S 4 General] ecs87:
This has been covered countless times. You're loading a firmware version lower than your current one. That's why it's failing. You NEED to load the firmware you're currently on or a more recent one. ONLY THE MODEM CAN BE DOWN GRADED, NOT THE ENTIRE FIRMWARE PACKAGE!!!
[Sprint Samsung Galaxy S 4 General] daniel4653:
There's your problem. You are on MK2 (from your previous post) and you are trying to Odin full MDC stock ROM. That's impossible as Knox doesn't allow the downgrade of stock Roms via odin. And you only need the MODEM to be on MDC not the whole ROM.
[Sprint Samsung Galaxy S 4 General] ross4747:
cool thank you man, ill attempt to odin a stock MK2 rom to fix this later on today.
[Sprint Samsung Galaxy S 4 General] rameshranga:
mms receive issues

I followed all the steps. I tried couple of different roms. If i use the tmobile rom, i have some voice quality issues. If i use sprint rom, cannot receive mms. I plan to keep the sprint , i am on the latest sprint stock rom.

I went into the data mode with my msl code by dialing ##3282#.

There are a few sprint specific settings here. Does anybody know what settings are needed here. Will it correct the mms problem

I see sprint specific urls on data profile, mmsc , multimedia etc
[Sprint Samsung Galaxy S 4 General] skrapmetal:
What carrier are you using? Could just be a APN issue you're having. I'm on straight talk with the Negalite ROM and everything works. ##3282# settings are mostly for Sprint, however, you want to make sure your phone number is in there for voicemail purposes if you are using another carrier. This will allow the voicemail shortcut on the dialer screen to operate properly. If not, its going to dial the number previously activated with that phone.
[Sprint Samsung Galaxy S 4 General] rameshranga:
My provider is Tmobile. my apn settings are correct. there are lot of posts here about outgoing mms working on stock rom and incoming not working. If i change my rom to a tmobile rom, it works but have a bad voice quality.
[Sprint Samsung Galaxy S 4 General] daniel4653:
Try gosms with T-Mobile apns.
[Sprint Samsung Galaxy S 4 General] rameshranga:
Name: T-Mobile

APN: epc.tmobile.com

Proxy:

Port:

Username:

Password:

Server:

MMSC: http://mms.msg.eng.t-mobile.com/mms/wapenc

MMS proxy:

MMS port:

MCC: 310

MNC: 260

Authentication type:

APN type: default,supl,admin,dun,mms

THis is my apn setting. Is this correct?
[Sprint Samsung Galaxy S 4 General] daniel4653:
To be honest I don't know. I've never used T-Mobile before.
[Sprint Samsung Galaxy S 4 General] DaGreatOne671:
Awesome thread!!! Can anyone help me out with getting data working...I managed to unlock and using straight talk(att sim) but can not manage to get data to work even by adding APN's. ..any help will gladly appreciate it. Thanks!

---------- Post added at 12:57 AM ---------- Previous post was at 12:33 AM ----------

Any specific way to get att data to work on unlocked sprint s4...thanks
[Sprint Samsung Galaxy S 4 General] daniel4653:
You might have not changed one of.the options from GSM to UMTS. I had this problem.then my phone after fixing it worked perfectly with Cricket Sim (ATT network) with HSPA+, MMS, and calls/text after putting the correct APNS and rebooting.
[Sprint Samsung Galaxy S 4 General] DaGreatOne671:
Thanks for the info bro...will give it a try!
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
I default to fast.t-mobile.com and leave APN type blank but the above should work fine too

Besides the UMTS, make sure you have the correct APN. Straight Talk has several that they use
[Sprint Samsung Galaxy S 4 General] DaGreatOne671:
Would gladly appreciate if anyone has working straight talk(att) apn...no luck on my end with data, voice and text works 100% thanks!
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
LMGTFY......

http://www.straighttalkbyop.com/program.php
[Sprint Samsung Galaxy S 4 General] DaGreatOne671:
Thanks for the help...I may be off on one of the steps...breaking my head here still no data...really appreciate your time and help!
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
I'm assuming you've rebooted...? I'd use a phone/network status app to see what if you're even pulling in a UMTS connection
[Sprint Samsung Galaxy S 4 General] skrapmetal:
I am on at&t straight talk. Here are some screen shots...
[Sprint Samsung Galaxy S 4 General] ross4747:
Hey just wanted to report back I successfully domestic unlocked my gs4 for t-mobile. I still wasn't able to flash a stock mk2 rim through Odin but I worked around this by flashing Philz recovery through odin. Just in case anyone is having the soft brick issue that I had. I also wanted to ask what roms have confirmed worked?
[Sprint Samsung Galaxy S 4 General] Dhulqarnain:
I am only getting EDGE

So i have looked everywhere to see how to resolved this issue i don't know why but after running through all of the different method especially the one here i am able to get voice working but data is staying at EDGE.

Galaxy s4 SPH-l720

MDC on 4.4.2

allready did an international unlock and domestic unlock but can't get data past edge.

Thanks in advance.
[Sprint Samsung Galaxy S 4 General] ross4747:
Make sure data roaming is enabled in setting

---------- Post added at 06:01 AM ---------- Previous post was at 06:00 AM ----------

See above ∆∆
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
What carrier?
[Sprint Samsung Galaxy S 4 General] PowSniffer0110:
T-Mobile may not have the updated 1900mhz 3G/4G in your area. Just 1700. Check the site
[Sprint Samsung Galaxy S 4 General] Dhulqarnain:
Edge data

The carrier is t mobile and i am also in the twin cities area man. The reason i am asking is because i have being able to do it for friend before and it worked on the same model and fallowed the same guide. i just don't know what i am missing i have looked at roaming settings and they are all in order . On a side note i can all get continous voice service if i pick GSM all in the band selection.

Thank you all for the quick reply.
[Sprint Samsung Galaxy S 4 General] ecs87:
Pick WCDMA ALL. Win.
[Sprint Samsung Galaxy S 4 General] Dhulqarnain:
Still stuck

I did WCDMA and i get no service with a x on the bars i even reflash mdc again and everything.
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
You don't need to be on MDC modem. It usually works best if the modem matches the firmware. I really don't know what to tell you except do the process over again in case there's something you missed and double check every single setting under Mobile Networks. I've never had an issue with any of the ones I've done
[Sprint Samsung Galaxy S 4 General] Dhulqarnain:
Thanks for all your help i will keep working on it .
[Sprint Samsung Galaxy S 4 General] ross4747:
Hey not sure if this was caused by the unlock or not but my phone is no longer playing music no matter what the app is and even in Pandora, nnothing will play. Then my phone is broken as well, so when I call the screen goes black for a while and then doesn't turn back on. Any have this issue and if so have you fixed it? I've tried removing dsp manager and reinstalling and then I tried just installing beats audio. Still nothing, any help would be great.
[Sprint Samsung Galaxy S 4 General] elproduc3r:
[/COLOR]

Maybe try flashing a new/diff rom

Im on stock rooted tw rom with mdc baseband but cant get anything after the above step. Anyone know how I can continue this? Entering 1 or 2 in select and key input does nothing.

Thanks
[Sprint Samsung Galaxy S 4 General] ecs87:
You HAVE to press menu>back. Then key input 0. BE PATIENT! It'll take time to come up.
[Sprint Samsung Galaxy S 4 General] elproduc3r:
THANKS! I finally got it

---------- Post added at 03:23 PM ---------- Previous post was at 02:56 PM ----------

I almost have it. just need to know which app works for this. I tried 2 and neither seemed properly.
[Sprint Samsung Galaxy S 4 General] mdj8606:
mms issue

I have used this method on an unactivated SPH L720. Everything works just fine except for my mms. Is it because the phone was never activated on Sprint? How can I fix this?
[Sprint Samsung Galaxy S 4 General] daniel4653:
As a future reference NEVER quote the OP. It takes up so much room. Have you installed the correct APNs?
[Sprint Samsung Galaxy S 4 General] mdj8606:
re

Sorry about that. Yes I have installed the correct APNs.
[Sprint Samsung Galaxy S 4 General] elproduc3r:
Ok, stuck again...

I completed all the steps (i went through everything 2 times now).

now with my active sim card, the phone says invalid sim card. also i notice whenever i boot the phone it tries to activate itself on the network. it was doing this before i started with a stock rooted rom also. my tmo s4 doesn't do this but this sph-l720 does.

any advice what I might have missed?
[Sprint Samsung Galaxy S 4 General] snekiam:
Try a new rom, it sounds like the phone thinks it is unactivated, and is connecting to sprint still.
[Sprint Samsung Galaxy S 4 General] ecs87:
A) invalid sim means you didn't do the unlock (international) properly. Downgrade modem/baseband ONLY (DO NOT DOWN GRADE THE ENTIRE FIRMWARE) to MDC and run the international unlock tool. Didn't work? Run it again. You must be in diag mode.

B) look up [MENTION=1130160]AlpineMan[/MENTION] 's HFA fix thread. You're going to need to download the drivers to connect to your phone as a COM port, DFS, your SPC, the new 16 digit password for Sprint, and fill in your MDN, MIN, and profile 1. I'm VERY brief here but all the information you'll need is in his amazing thread.
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
MMS is a known issue. Some have solved it by flashing a T-Mo ROM. Read the thread for details.

Seconded.

You need to re-do the international unlock. Make sure it's in DIAG and all drivers install. Let the program do its thing and do not touch the phone until it has rebooted completely
[Sprint Samsung Galaxy S 4 General] mdj8606:
invalid sim sign

I did a data reset on my phone and now it has invalid sim notification again. I previously sim unlocked it and it worked perfectly. How do I get rid of invalid sim again?
[Sprint Samsung Galaxy S 4 General] ecs87:
International unlock it again.
[Sprint Samsung Galaxy S 4 General] manaurys:
i got it to work but without the build.pro modification, if i did that it didnt let me add the apn and another thing its conected to t-mobile hsps+ but the internet is super super slow anybody has a fix for that???
[Sprint Samsung Galaxy S 4 General] daniel4653:
I noticed the same thing with 4.4.2 update is my guess where the build prop edit is not needed. Has to be tmobike coverage in your area. I connected to Cricket which runs off of ATT network on HSPA+ and I get 3mbps.
[Sprint Samsung Galaxy S 4 General] ecs87:
For anyone who is still following the OP. Do not touch GSM ALL or LTE ALL. ONLY touch WCDMA ALL. You should get decent speeds. It's better than my Boost (Sprint) 3G S4 in upper midwest USA (yes I have CDMA EVDO REV. A instead of the half ass flashed 1xRTT).
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
Hmm interesting. Mind explaining the reasoning? And should work fine for both ATT and T-Mo?
[Sprint Samsung Galaxy S 4 General] ecs87:
If you have data working or H+ up top this shouldn't affect you. But some people touch GSM ALL, WCDMA ALL and then LTE ALL. whichever one you touch LAST is the only thing that the tin can radio interface will remember. Being that LTE won't work, there's absolutely no need to touch that. If you touch GSM all last then you'll only get edge...so there's no need to ever touch that one either...unless you like edge speeds. So that leaves WCDMA ALL which is the only thing that we should be tapping since it gets us talk/text/3g/H+. Yes, I've experimented with them all :)
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
Hmm. Interesting. Certainly explains why they're in LTE only mode when I reboot from the service menu steps. But I've never had an issue picking up HSPA when I switch them to GSM/UMTS mode
[Sprint Samsung Galaxy S 4 General] daniel4653:
Hmm I followed the instructions to the dot and HSPA+ worked for me.

---------- Post added at 09:19 AM ---------- Previous post was at 09:19 AM ----------

I touched GSM wcdma and LTE in the order that it is listed.
[Sprint Samsung Galaxy S 4 General] ecs87:
I was only able to get Edge standing in the exact same spot using either GSM ALL or LTE ALL. The only way I got H+ was tapping WCDMA ALL only.
[Sprint Samsung Galaxy S 4 General] realestone:
Same for me
[Sprint Samsung Galaxy S 4 General] elight7286:
Spc code options....

OKAY.....so Ive spent days, and hours trying to unlock my sprint samsung galaxy s4 L720PUBNC6 BUILD/ android 4.4.2 to use for straight talk. I had an S3 and pretty much have all US S3 variants mastered. I was able to get in to service mode by dialing *#0011#. I pressed back, key input"Q", and key input "000000" waited about 15 seconds. I used the instructions from this post to change the settings, but nothing happened. I used several others post from various forums to try, and get the MSL/SPC code. MSL reader, and get my MSL apps did not work. regionlock away did not work, and neither did SAMIOTA hidden menu app. If you download MSL utility.apk it will give you your SPC code. The question now is what options to change? I still get the invalid sim message, and so far no service. I did get a breakthrough of sorts....my phone tried to set up on ZACT Mobile. which is apparently sprints version of a prepaid network. If someone can help figure out the options needed then we can master this device, and move on to the S5. :cool:
[Sprint Samsung Galaxy S 4 General] daniel4653:
Never quote the OP! And secondly you are trying this method that is meantnfor the SPH-L720 not the SPH-L720T which is the phone that you have so you cannot unlock your phone.

---------- Post added at 01:30 PM ---------- Previous post was at 01:27 PM ----------

An no there is no known method of unlocking for the Triband version of the phone.
[Sprint Samsung Galaxy S 4 General] mocoyombiflash:
in which steps ?

---------- Post added at 06:00 PM ---------- Previous post was at 05:58 PM ----------

did you fix it?
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
Step 9
[Sprint Samsung Galaxy S 4 General] mocoyombiflash:
thank you!
[Sprint Samsung Galaxy S 4 General] mikasa.ackerman:
I managed to get my Sprint S4 (NAE baseband) working on Cricket, but I can't get MMS to work or VVM. I can check my voicemail by dialing my phone number, but I don't receive a notification when someone leaves a voicemail. I tried to go back into service mode, but now it prompts "USDD code running..." followed by Connection problem or invalid MMI code." The APN settings are correct as they're from the Cricket wireless page. Any help would be most appreciated.
[Sprint Samsung Galaxy S 4 General] daniel4653:
In not 100% sure what to advise and I feel bad about that. I unlocked 3 GS4s on NAE and are fully functional on Cricket. For voice mails I downloaded the free cricket one in the play store. I followed the steps to a T. And I set the APNs from Cricket website as well. You could try a third party MMS app like gosms and Set the APNs ononce again but this time within the gosms app itself.

---------- Post added at 12:46 PM ---------- Previous post was at 12:43 PM ----------

Here are my APNs
[Sprint Samsung Galaxy S 4 General] kumba01:
what is your method?

I have follow instruction on this thread, sprint gs4, android 4.4.2 baseband downgrade to mdc. t-mobile working good (voice, mms, internet), try att with correct apn setting got only voice and sms (no internet), do I have to upgrade to MF9?
[Sprint Samsung Galaxy S 4 General] manaurys:
I noticed that even if you have the correct apn setting in the phone when you go hangouts, settings, sms when you look at that it has different apn from sprint in that place you need to fix that and put the right apn
[Sprint Samsung Galaxy S 4 General] kumba01:
This method works great (combine with 11 steps by OP) now I have android 4.4.4 google play edition on my ex-sprint gs4 4.4.2

(apn will automatic set, att or tmo). Thanks.
[Sprint Samsung Galaxy S 4 General] Dreams2Reality:
Everything worked fine and had been for abut 32 hours, then I turned off my phone before I went to sleep. I woke up and turned the phone back on and all I get is no signal. I have turned off the phone multiple times before and it had no issue, but all of a sudden I get no signal anymore "0 bars, emergency calls only". It's been about 3 hours so far. I tried everything, even doing this process over again after a factory reset.

If I switch to LTE/CDMA or CDMA from the settings, I get bars but no data connection. I am using a T-Mobile sim card and have tried the sim in another phone and it works fine..

Any solution?

Thanks for your time.
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
Did you check the IMEI? If it's still clean, do a ##SCRTN# from the dialer and then repeat all the steps
[Sprint Samsung Galaxy S 4 General] Dreams2Reality:
clendsaishe

I bought this phone with a bad imei, does that really even affect it because the phone had a bad imei before I unlocked it and it was working fine til now.

The original post says he also had a bad imei, so I don't think that's the issue.
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
Depends on why it's bad.

Nonpayment = it'll still work on GSM.

Lost/stolen = it won't work on US GSM, but other countries should be fine.

Check the IMEI and see what it says
[Sprint Samsung Galaxy S 4 General] skrapmetal:
Mine had a bad ESN with sprint (CDMA) but I use it now on at&t with straight talk (gsm)
[Sprint Samsung Galaxy S 4 General] gspears:
What option? When I dial that code, I get a pretty extensive menu with many options and I went through every item and nothing looked like a phone number. I did find some MMS settings and I set them to AT&T MMS settings but it did not help me receive MMS messages. I would love to fix the voice mail number issue.

TIA
[Sprint Samsung Galaxy S 4 General] Dreams2Reality:
My phone was blacklisted which is why i didnt have any connection. I was able to download a cracked version of DFS CDMA Tool and simply changed the ESN/IMEI/MEID numbers and did the unlock process again to double check and my phone is working now.

----------

Just delete "voicemail" from your contacts and add your own contact with the voicemail number "google the voicemail number".

Im using T-Mobile so i downloaded the T-Mobile voicemail app.. I tested it out and it works fine..

Im currently looking up how to fix the mms issue.
[Sprint Samsung Galaxy S 4 General] daniel4653:
Hope you can find something on MMS. I'm having issues on ATT. With the correct APNs
[Sprint Samsung Galaxy S 4 General] mocoyombiflash:
Select WCDMA prefered GSM getd u EDGE
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
Talking about manipulating serial numbers on XDA is an easy way to get the banhammer