yashsingh1/xdaforums huggingface dataset:
[Sprint Samsung Galaxy S 4 General] ecs87:
If you're not good at searching and solving issues then you shouldn't have tried to unlock your device. This isn't for people who want a one click and done. You will have issues and need to search and work through them. It's how the rest of the users here solved their issues. There's been plenty of guidance, hints and files dumped throughout this thread. There's no reason anyone needs to get spoon fed anything at this point.

---------- Post added at 10:28 AM ---------- Previous post was at 10:27 AM ----------

Thanks for posting back but quoting the entire OP was not necessary and is frowned upon.

---------- Post added at 10:30 AM ---------- Previous post was at 10:28 AM ----------

Nope. Everything is the same. Check the IMEI to see if it's blacklisted. If not start all over with a ##72786# and then unlock.
[Sprint Samsung Galaxy S 4 General] droidtom:
Thanks for posting back but quoting the entire OP was not necessary and is frowned upon.

---------- Post added at 10:30 AM ---------- Previous post was at 10:28 AM ----------

Nope. Everything is the same. Check the IMEI to see if it's blacklisted. If not start all over with a ##72786# and then unlock.

Noted. I'll keep that in mind next time I reply to a post.
[Sprint Samsung Galaxy S 4 General] mocoyombiflash:
It can be any modem agter international unlock . S4 flasher works on MDC then upgrade afterwards do Domestic
[Sprint Samsung Galaxy S 4 General] Kompster:
I have been working on a friends SPH-L720 which is running a MK2 build and a MDC baseband. He wants to use straighttalk with the device. I have searched and read through the forums for days and from what I've read it sounds like downgrading from MK2 to MF9 is not possiblle. What is the recommended path I should take? Downgrade or upgrade to NAE?

Also, I am having difficulty accessing the data programming menu.

Thanks in advance, any input would be greatly appreciated.
[Sprint Samsung Galaxy S 4 General] daniel4653:
It is impossible to downgrade the BOOTLOADER but it is possible to downgrade the MODEM/BASEBAND which has to be done to get access to the service menu.

Edit:

You can grab the MDC modem here. Thank Unknownfoce.

http://d-h.st/uPD
[Sprint Samsung Galaxy S 4 General] ecs87:
Actually, the service menu can still be accessed by inputting Q and then 0000 on newer basebands (@E.V.A. found this out NOT ME). The downgrade was to help unlock the efs folder nvm/num to gain access to nv item 10124 (where the international lock is contained).
[Sprint Samsung Galaxy S 4 General] M1k3Carson1369:
Yeah, IMEI is fine, I've double/ttiple/quadruple checked... have even done the ##SCRTN#, and redone the international unlock and the domestic unlock, still to no avail. .. =\

I'm dreading the idea that I must be doing something wrong, here... but I've done this many times on this phone, and have read through almost the entire thread, other ppl are having success on MK2, I should too, but idk wtf... =[
[Sprint Samsung Galaxy S 4 General] droidtom:
If you're at the step to download build prop editor and apn shortcut you dont need to do the build prop part its unnessesarry so just do the apn part.

I think it's OK to go back to your original modem to get wifi to work.

Truth be told I downgraded the modem to do the international unlock and afterwards for the domestic unlock I was already back to nae modem and the domestic unlock still worked and I'm using tmobile now.
[Sprint Samsung Galaxy S 4 General] M1k3Carson1369:
So can ANY ONE confirm this working with an H2O Sim card? Cause that's the only active Sim card I have to test it with, but it shows no bars with a red x, and does for any other Sim I put in, but the H2O SIM card works in my go's AT&T S4...
[Sprint Samsung Galaxy S 4 General] Kompster:
I'm pretty sure I've gotten the international and domestic SIM unlock to stick.

After changing all the specified settings in the service menu and setting the network mode and preferred network mode to WCDMA only and checking the "Available Networks" after searching the phone now shows AT&T and T-Mobile (it only showed Sprint before)

The "No Sim Card Installed" error also disappeared which leads me to believe that I have indeed completed all the steps properly. I don't have a GSM SIM card yet to confirm if I've successfully unlocked the device.

Aside from trying a SIM card, is there another way to be sure? If it is unlocked what would be the best US GSM provider options? AT&T, T-Mobile, Straight Talk, other? I'm curious what would be recommended.

Another question I have is about the APN settings; The deactivated Sprint SIM card is installed and when I access the APN Settings it lists four Sprint Network options, is this data pulled from the SIM card? When I attempt to enter a new option and save it the entry doesn't show up on the list. Is this normal and I'm supposed to make the new APN entry when I've inserted a compatible SIM card?
[Sprint Samsung Galaxy S 4 General] daniel4653:
Komp, if you don't the "no Sim inserted" popup then you are ATLEAST half way there. Lol
[Sprint Samsung Galaxy S 4 General] Kompster:
I appreciate all your help but to clarify, you're saying "No, the device is probably not unlocked"?

My experience with Android devices is in an entirely different area. I apologize for asking some annoying questions.
[Sprint Samsung Galaxy S 4 General] hfl12:
I want to reset the device do I loose the unlock? Thanks for the help.
[Sprint Samsung Galaxy S 4 General] M1k3Carson1369:
If you just do a factory data reset through the settings menu or through recovery, the unlock should stick.

As long as you don't use ##SCRTN# or ##RTN# and reset the "service" settings or "network' settings or whatever. .

---------- Post added at 11:52 PM ---------- Previous post was at 11:42 PM ----------

Those 4 APN are pulled from the SIM card I believe, because they disappeared from my menu when I took it out.

I am not sure about it pulling APN from other SIM card though, I think it might for an AT&T or T-MOBILE SIM card, might not, but I don't believe there's a chance of it pulling APN for an MVNO at all... so may likely have to manually input the APN... =\

A lot of people (in my experience) seem to like H2O service, they are MVNO of AT&T, and ppl say they get service out in areas where other networks don't reach, like outside major cities or in small towns or whatever, idk...

I just know ppl tend to share with more positive opinions/experiences with AT&T or MVNO of AT&T, than I hear with T-Mobile or whatever. ...

And again, just what I hear from customers and friends, so...
[Sprint Samsung Galaxy S 4 General] Kompster:
[MENTION=4747292]M1k3Carson1369[/MENTION]

I appreciate your detailed, thorough and honest response. +1
[Sprint Samsung Galaxy S 4 General] daniel4653:
Agreed. Cricket wireless is awesome on ATTs network
[Sprint Samsung Galaxy S 4 General] M1k3Carson1369:
Oh yeah, that too lol
[Sprint Samsung Galaxy S 4 General] droidtom:
Will international and domestic unlock still work if we install OTA L720VPUFNG2
[Sprint Samsung Galaxy S 4 General] daniel4653:
As far as I know no.one had tried

Do it and let us know.
[Sprint Samsung Galaxy S 4 General] droidtom:
If I had a spare test phone I would. Could someone test and report back please?
[Sprint Samsung Galaxy S 4 General] ecs87:
I couldn't see it not working unless you're unable to downgrade THE MODEM (ONLY!). Besides...why do you want to update? The 4.3 and 4.4.2 updates have brought nothing but issues. I wish I could go back to 4.1.2...
[Sprint Samsung Galaxy S 4 General] atoore:
I should've asked in here instead of making a topic but
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
You mean 4.2.2? :P

Odin full NAE. Downgrade modem. Do unlock. Upgrade modem. Profit.
[Sprint Samsung Galaxy S 4 General] ecs87:
Nope, totally meant 4.1.2. It was the last version of Android that I actually liked. Decent layout, GREAT performance, the modems don't have as many bugs as they do now (IE wifi not enabling), and we still had access to the efs nvm folder. I know...the L720 never came with 4.1.2. Wish it did!
[Sprint Samsung Galaxy S 4 General] M1k3Carson1369:
So I was at a friend's house and popped his inactive T-Mobile SIM in and started messing with the Service Menu settings....

It is now showing T-Mobile in the notification menu, and in Settings> About> Status. Gonna get home and test it with my gf's H2O SIM, see if my changes actually worked, and if they did then I'll update with my changes.

I'm keeping my fingers crossed!! =]
[Sprint Samsung Galaxy S 4 General] atoore:
I tried flashing the full NAE ROM via Odin....it almost went pass "system.IMG.ext4" in Odin and then it failed on write nand...

I flashed recorevry and now /data is not mounting. I flashed the achrom c11 ROM again but its not booting now, its stuck on the android screen (soft-bricked.)

What should I do next? Thanks for your help BTW
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
Flash the stock tar, not a ROM
[Sprint Samsung Galaxy S 4 General] tatico28:
Hey guys, I did everything as per OP, the phone is working on tmo with the MDC modem but only shows "E" edge and call quality is horrible, what should I do at this point, flash correspondent built modem?
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
As a first step, yes, always revert the modem. Make sure your APN is correct. Remember that this is not a GSM phone to begin with and is more of a hack unlock than anything so it will not perform as well as a T-Mo S4 in the exact same place. Make sure you got all the bands enabled in the service menu. Check their coverage map - you may just not have great signal there. Could also try getting a new SIM.
[Sprint Samsung Galaxy S 4 General] fyrusher:
Thanks OP.

I got my L720 unlocked international and domestic.

FYI, my S4 came with 4.4.2 stock unroot NAE modem.

1) Odin modem only backed to MDC for unlocking.

2)Once unlock is done and confirmed with detected signal with ATT or Tmobile sim. I had modem flashed back to NAE. Yes. Unlock still there :victory::victory:

3)I've even OTA the update to NG2 baseband which i received yesterday. i was abit hesitated. fortunately, the unlock still stick after updated.

Like others said, I guess the unlock will only be swiped by " Factory reset or Network reset"

:good::good::good::good::good::good::good:
[Sprint Samsung Galaxy S 4 General] tatico28:
Only "Edge"

I`m unlocked and only getting edge, flashed the NAE modem back and still no luck, for some reasons on step 10) Under the NETWORK CONTROL menu, next [4] AQUISITION ORDER, I can`t select [3]UMTS_GSM any ideas why?
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
It will even stick after a factory reset. Only a network reset would un-do it (##RTN# or ##SCRTN#)

I've never seen that happen on an S4. And i've unlocked dozens of them. Redo all the steps
[Sprint Samsung Galaxy S 4 General] jonathonkindle:
no wifi

i am somewhat new to this and would greatly appreciate any help. I followed all steps to unlock and got to step 12 where i needed to enable wifi. It worked before i started trying to unlock but for some reason, it will not allow me to toggle the wifi on. I went into the *#0011# service menu and toggled the power saving option off under the wifi menu, but still nothing. Is there anything i can do to continue and fix wifi problem? If not, is there a way to revert back to complete factory settings and try again( by complete i mean undoing all modifications in the service menu as well) ?

The phone i am using is the Sprint sph-l710 with the nae build. I flashed down to mdl version.

Thank you
[Sprint Samsung Galaxy S 4 General] daniel4653:
If you did the build prop edit from the ending, reverse it. You don't need it to edit and add APNs.
[Sprint Samsung Galaxy S 4 General] ecs87:
Pick WCDMA ALL in the service menu. DO NOT TOUCH GSM ALL or LTE ALL afterwards. Reboot. Enjoy 3g/H+.

---------- Post added at 08:08 AM ---------- Previous post was at 08:07 AM ----------

It won't be wiped by a factory reset. It doesn't touch the nv items afaik. But a network reset WILL reset the nv items therefore erasing your intl unlock AND Domestic unlock as well.

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

First off...where do you need to enable wifi? Secondly, with wifi issues, normally they can be solved by turning OFF the phone, pulling the battery, putting the battery back in, and booting. 99% of the time this has fixed it for me. The other 1% of the time it's because I need to flash the modem and nonhlos files in Odin again.
[Sprint Samsung Galaxy S 4 General] atoore:
I did all that and im in soft-bricked now (stuck on sprint logo)

I flashed the stock both via Odin and then cwm but they aren't booting last the sprint logo. The log says, failed to amount /data (invalid argument) and can't seem to mount it via cwm. So I'm pretty sure I got my data partition ****ed up....I searched around for the pit file and bootloader files to fix the boot loop but I couldn't find them around here....what would you suggest me to do next? Thanks!
[Sprint Samsung Galaxy S 4 General] ecs87:
Wipe data and cache.
[Sprint Samsung Galaxy S 4 General] atoore:
It won't let me wipe data at all...it says data not mounted in cwm that's why its not booting....I think my internal storage repttetion is missed up, any other suggestions to fix this soft brick??

Could someone please pull the 16gb pit file for me? You must be running the latest NEA update...

Follow this guide here http://xdaforums.com/showthread.php?t=2582899

su
dd if=/dev/block/mmcblk0 of=/sdcard/sch1545.pit bs=8 count=580 skip=2176

You need to change that code above to appropriate sprint s4 name because its from the Verizon s4 section,.

I really do need this pit file guys thanks!
[Sprint Samsung Galaxy S 4 General] smithcor:
SPH-l720 on T-mobile

I have succesfully unlocked the phone and got HSPA+ but now i want to change the rom. Is there a way to use cyanogenmod 11 but use T-Mobile network and if so how? Can i just change the apn settings or apn file?
[Sprint Samsung Galaxy S 4 General] daniel4653:
Yes
[Sprint Samsung Galaxy S 4 General] RubenGalvao:
My S4 with the latest firmware running on T-Mobile's network
[Sprint Samsung Galaxy S 4 General] smithcor:
Yea thanks I had just figured it out like a couple hours before you quoted me . unfortunately I can't check hspa right now because I'm not in a market that has that right now but I did get connected and confirmed data !
[Sprint Samsung Galaxy S 4 General] aristowong:
I had this working, however it reverted back to Roaming Indicator off and CDMA Network Status on a custom rom.

Does anyone else experience this issue?
[Sprint Samsung Galaxy S 4 General] aristowong:
I flashed simkat and it was working over night. However, this morning it reverted back to CDMA. Do you have any notion as to why it would do this?
[Sprint Samsung Galaxy S 4 General] atoore:
I fixed my problem by myself since no one seem to know how to fix it....

If anyone ever came across (Cant mount /data (invalid argument) in cwm, all you do is root with CF AUUTOROOT via odin and it will fix the soft-brick problem.

I've followed this guide and now I think I got new problem (more challenge for me). I had no idea that my IMIE is blacklisted...it was a stolen phone so that means all the us GSM providers blocked the phone. It tries to connect to the network for like 1 minute and then it says no service with an X.

So my next move is to find a way to get around that problem ;) ;) so private message me if you can direct me or something because i can't disclose it in the forums.
[Sprint Samsung Galaxy S 4 General] sheldonracer18:
Please Help

Okay, I have a SPRINT Galaxy s4 sph L720 and ive followed the domestic unlock process and cant get it to work. I downgraded to MDC through ODIN3.09 and thats all. I am running the NAE build. I am trying to get my AT&T sim card through straight talk to work on this phone. The sim card is activated but after I run the domestic unlock process exactly how the steps are listed above and let my phone reboot it still has no service bars and it says invalid sim card. I had this phone activated through Sprint before but it is not in service anymore. Im trying to switch it to straight talk via their AT&T sim card but like I said it has a red X above the service bars and says invalid sim. Am I doing something wrong? It is NOT the L720T..... It is just the L720.Thanks in advance, Bobby.
[Sprint Samsung Galaxy S 4 General] daniel4653:
Invalid Sim means that you are NOT unlocked at all

Repeat international unlock then try domestic unlock.
[Sprint Samsung Galaxy S 4 General] hfl12:
Can I flash NG2 firmware via odin and still retain the unlock ?
[Sprint Samsung Galaxy S 4 General] daniel4653:
You're able to with NAE so I would say Yes. Try it out and let us know.
[Sprint Samsung Galaxy S 4 General] hfl12:
I only flash the modem from NAE firmware, not the full rom. But I want to flash the whole firmware in this case.
[Sprint Samsung Galaxy S 4 General] aristowong:
Anyone having trouble flashing AOSP roms? Is it only TW roms that work?
[Sprint Samsung Galaxy S 4 General] smithcor:
Firmware

Ok so my main question is after this can you update the firmware to the newest one as long as u downgrade back to the MDC modem?

I am currently using sprint galaxy s4 running on T-mobile with cm-11 and every time i try to use any type of media it crashes. I am working on trying to re flash stock firmware because i have exhausted all other causes, but every time i try to flash the MDC firmware in odin it fails. any ideas?
[Sprint Samsung Galaxy S 4 General] Crossvxm:
Can anyone confirm that the domestic unlock works with a bad IMEI Sprint S4? I've seen one for an outstanding price in mint condition and I'm thinking of getting itfor my collection. I can confirm domestic unlocks for the G2 work on T-Mobile regardless of IMEI status.
[Sprint Samsung Galaxy S 4 General] superhtchd2:
just wanted to verify is the OP from this thread still the correct way to unlock for use with at&t in the US? or has it been changed within the hundreds of posts within this thread? i have a completely stock sprint gs4 that i want to use with at&t.. thanks!
[Sprint Samsung Galaxy S 4 General] CHRIS_HAX:
yo

Yes it will work...:good:

---------- Post added at 03:48 PM ---------- Previous post was at 03:40 PM ----------

Download the official firmware from Samsung website.. 4.4.2...:good:
[Sprint Samsung Galaxy S 4 General] superhtchd2:
I tried to downgrade the modem but isn't working . can just the modem be downgraded coming from the latest build nc6? Or do I need to downgrade to mf9 to do it ? although i tried putting mf9 on the phone via the instructions from the OP and it does the same thing. fails in odin.
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
Anyone had success on NG2? S4 unlocker gives the "Completed, phone rebooting" message but it doesn't actually do anything - phone just sits there
[Sprint Samsung Galaxy S 4 General] fyrusher:
I have it unlocked international and domestic. It reads T-mobile/AT&T " i can see the mobile network "T-mobile" at setting menu. But there is one issue "ICCID Unknown" after Sprint lte sim inserted with network chose "LTE/CDMA or CDMA only.

anyone know how to make it reads/reorganizes sprint lte sim without wiping the unlocks ?
[Sprint Samsung Galaxy S 4 General] juancollado2003:
NAE

deleted
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
Yeah NG2 might not be possible. Reverted back to NAE and same thing. Program freezes, and then when the phone is unplugged, this shows up:

When you click on Details, this is the log:

This is the first S4 on NG2 that I've attempted this with. First one that's given me any kind of issue. That can't be a coincidence. Any ideas [MENTION=4959296]ecs87[/MENTION] [MENTION=2684188]autoprime[/MENTION]?

That thread comprises the first step of this method. I don't understand what about "this method" didn't work for you
[Sprint Samsung Galaxy S 4 General] juancollado2003:
deleted
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
Si lees bien el primer puesto de este tema, ahi dice muy claramente - el paso #2 es el mismo metodo que tu hiciste. Ese paso se tiene que hacer antes de lo demas
[Sprint Samsung Galaxy S 4 General] juancollado2003:
you are 100% right sorry
[Sprint Samsung Galaxy S 4 General] arty_sco:
SPH-L720 Locked again after month of use

Hi everyone!

First thank you all for making my life easier with this forum.

So here is my problem: I did unlock Sprint SPH-L720 month ago using this method, everything worked perfect.

Yesterday (after month of using the phone with t-mobile sim card) phone get locked again and I can't get it unlocked again. I tried almost everything but no success. Phone is freezing and work very slow.

Did I get some virus or does anyone know what is wrong?

Thank you in advance.

P.S. Sorry for my bad english.

If more info needed, please let me know.

P.S.S. I was in Mexico for two weeks (holidays) first day I came back to USA phone work normally but after day or two get locked again :(
[Sprint Samsung Galaxy S 4 General] ecs87:
For those with trouble using the program:

Downgrade to MDC modem.

Get your SPC and the Sprint 16 character password

Send both through CDMA workshop or DFS

Use QPST EFS explorer and find nv item 10124

Copy it to your computer and alter it in a hex editor to change the two bytes to "30"

Load it back into the phone. Reboot. Win

This is the completely manual way to internationally unlock the L720.
[Sprint Samsung Galaxy S 4 General] t0mmyr:
How much service does the Sprint s4 get on t mobile? Does 3g and 4g lte work well?
[Sprint Samsung Galaxy S 4 General] daniel4653:
3G and HSPA+ only. Same on ATT.
[Sprint Samsung Galaxy S 4 General] Crossvxm:
But supposedly I've read some mention they use a deodexed Tmobile based rom and the phone can reach 4G speeds? I'm pretty happy with H+, would just look weird the H+ icon all the time. Once domestic unlock has been done, can we update (as in rom and modem) and still keep our domestic unlock settings?
[Sprint Samsung Galaxy S 4 General] daniel4653:
Yes you can keep unlock. The user probably meant HSPA+ because it shows 4G.
[Sprint Samsung Galaxy S 4 General] Crossvxm:
Interesting. I want the 4G icon. If I had the 4G icon, I'd be more than glad to just stick with my rom. H+ icon just looks weird to me. I'm not really used to it.
[Sprint Samsung Galaxy S 4 General] elpesao23:
hi,i have stock rom mf9 rooted runining 4.2.2, i would like to know if i follow the steps on this thread: i will be able to get it to work on metro pcs,thanks
[Sprint Samsung Galaxy S 4 General] fyrusher:
After Domestic unlock, my S4 doesn't recognize the sprint lte sim anymore . It shows "ICCID UNKNOWN"
[Sprint Samsung Galaxy S 4 General] ecs87:
It's because you didn't internationally unlock it...read the directions again.
[Sprint Samsung Galaxy S 4 General] fyrusher:
Actually, After international unlock, the phone reads both Sprint Sim and T-mobile/ATT sims. But if domestic unlock also complete, the phone does not read sprint sim, however it reads T-mobile/ATT sims :confused::confused::confused:
[Sprint Samsung Galaxy S 4 General] ecs87:
Odd...your EFS may be corrupt. I had to clear the efs partitions on a L720 the other day that kept getting unknown baseband from the unlock tool.
[Sprint Samsung Galaxy S 4 General] danyell01:
Please help out I can't still unlock my samsung s5 lock to T mobile after I dail is code *#197328640# I only ave [1] to [6].please someone should help me out.my emal opawoyeopeyemi@gmail.com
[Sprint Samsung Galaxy S 4 General] daniel4653:
You're in the wrong place this is for the Samsung Galaxy S4 SPH-L720. Not.the Samsung Galaxy S5.
[Sprint Samsung Galaxy S 4 General] danyell01:
Am just asking if anyone can help out
[Sprint Samsung Galaxy S 4 General] hfl12:
I updated my phone with ng2 firmware (tar extension) from one of the threads here via odin and everything is working good. Make sure you factory reset and use PDA option in odin(3.07). No need to downgrade or anything.
[Sprint Samsung Galaxy S 4 General] lclutchl:
For Net 10

Will doing this make net 10 work which is under att