yashsingh1/xdaforums huggingface dataset:
[Sprint Samsung Galaxy S 4 General] hotker79:
tutorial

tutorial please
[Sprint Samsung Galaxy S 4 General] NotJason:
I am trying to do this method but honestly I am stuck at step 1. It tells me to download the MF9 file found at rwilco. I have tried like 10 times and the download goes horribly slow and always stops about 300megs. Does anyone know of another place I can obtain this file? Currently I have an S4 with stock unrooted MF9.

Any help is greatly appreciated.
[Sprint Samsung Galaxy S 4 General] rmc16:
Tutorial about what?
[Sprint Samsung Galaxy S 4 General] snekiam:
Anybody able to confirm AT&T HSPA+ service? Do not have T-Mobile coverage here :(

-snekiam
[Sprint Samsung Galaxy S 4 General] cephasara:
Downgrade MK2

Do I need to downgrade to MF9? Is it even possible? Odin fails to flash any file I attempt. Are there any Modem zips I can flash through recovery? Thanks.

I'm sure this has been asked before, but not in respect to this thread.
[Sprint Samsung Galaxy S 4 General] imbmiller:
If you took a OTA update on your phone you're fubar'd as there isn't a way to downgrade currently. If preserved your Baseband and updated to MJA modem you can apparently go back. Idk the details of this. The modem zip is in the link in step 1.

I think [MENTION=4988907]nicotheandroidguy[/MENTION] confirmed this, at least in his area.
[Sprint Samsung Galaxy S 4 General] nicotheandroidguy:
Yes I can confirm AT&T HSPA+ works only on a activated AT&T sim.
[Sprint Samsung Galaxy S 4 General] cautious911:
I can confirm that at will get coverage and h+ also if T-Mobile is under sprint network you also get edge andatt vise versa butttt. I really meet to know if I flash a T-Mobile ROM on my sprint gs4 it will brick or work properly just because I get a lot of dropped calls I figure its the phone trying to connect to CDMA network
[Sprint Samsung Galaxy S 4 General] premiumg:
I have a stock I9505 Rom with Sprint Kernel and modem. From what I read so far, you can install a TMobile ROM as well. However, imbmiller has advised against installing a TMobile modem. I've had issues with dropped calls as well. I found the Sprint MDC modem to handle better than MF9.

It's also possible TMobile 1900mhz coverage is not great in your area. What's your zip code? You can plug it in here to see the coverage: http://www.airportal.de/
[Sprint Samsung Galaxy S 4 General] imbmiller:
You should be fine, skip my step of a clean install and start at step #1
[Sprint Samsung Galaxy S 4 General] MasterSe7en:
Has anyone by chance figured out how to unlock on 4.3 ota? stupid sprint updated it when i was trading phones with someone now im stuck, i followed everything and i flashed the MDC modem, no more invalid sim, but wont pick up GSM Networks
[Sprint Samsung Galaxy S 4 General] NotJason:
Step 1 is the one I can't seem to download the file from. Again Iam on stock MF9 unrooted. I would do step 1 but the download link from the site never works, even tried from my office. So you said skip it which I assumed you meant goto step 2 instead of step.

Step 2 says

1. A Sprint GS4 on the MDC or MDL baseband. MF9 baseband will NOT work with this method. Downgrade baseband(modem) to MDC via Odin or Heimdall with THIS FILE. Thank you sxtpdevelopers.com and Rwilco12 for the file/hosting. You can go back to the MF9 baseband/modem after the SIM unlock by flashing THIS .TAR.. thank you noobnl for that. If the modem downgrade/upgrade doesn't stick.. try powering off completely then booting into download mode.. instead of rebooting directly into download mode. Sometimes this helps. I promise it is possible to go from MF9 -> MDC -> MF9

Well I am on MF9 it days not to do it with MF9 so not sure where I should be starting here. Pretty good at doing this type of stuff usually but can't get a decent starting place with this one..
[Sprint Samsung Galaxy S 4 General] imbmiller:
Sorry for the delay and not being super clear before. .

I meant for you to skip step one in my guide and start with autoprime's guide linked there within. Step one in his guide shows you how to downgrade your mf9 modem to mdm or mdc and then goes on to complete the International unlock guide and return to step three in my guide when you have finished.

Lmk if you have more questions, happy to answer if i can!
[Sprint Samsung Galaxy S 4 General] imbmiller:
Can you get into the service mode "hidden menu"?
[Sprint Samsung Galaxy S 4 General] cephasara:
MF9 can't get to Service Mode main screen

As far as I've gotten with MF9, nope. I can enter *#0011# and get into the connection type screen of Service Mode, but entering 1 or 2 with any combination of selecting Menu >> Back, I have been unable to get to the main screen. Maybe there's another way to get to the main screen of Service Mode, but I haven't found it.
[Sprint Samsung Galaxy S 4 General] NotJason:
No problem thanks for the information. Got it all working REALLY appreciate everything.
[Sprint Samsung Galaxy S 4 General] premiumg:
I can confirm the same thing. On MF9 radio, I was able to get to the service screen "display" mode, but I was not able to get to the configuration screens at all. I tried multiple times with different combinations of 1 and 2 from Key Input and Select, but wasn't able to get to the configuration screens. I downgraded to MDC radio and was able to without any issues.
[Sprint Samsung Galaxy S 4 General] MasterSe7en:
Yes i can get into the hidden menu, i followed every step, after i followed step one for the international unlock i didnt get the invalid sim anymore, but i did everything else step by step and still nothing, wont get signal unless i switch it to automatic and when i do it just picks up signal from sprint and tries to activate
[Sprint Samsung Galaxy S 4 General] jusinjusin:
Does anyone have any guidelines when choosing a T-Mobile ROM to flash with this domestic unlock? Or does it not matter?
[Sprint Samsung Galaxy S 4 General] MiamiMike:
I'm running the Sprint SPH-L720, you can use ANY rom once you unlock the modem, however according to the post, you could get possibly get LTE with the M919 T-Mobile rom.

This has the M919 ROM, but it's unlock procedure doesn't work (FYI) http://xdaforums.com/galaxy-s4-sprint/general/l720-l720t-gsm-unlock-att-tm-t3189063#post62587592
[Sprint Samsung Galaxy S 4 General] EngineManShawn:
I have the Sph-l720t running on straight talk from Sprint. I have Sprint spark working. I was told I could only use 3g. Not true!I am using the original Sim from Sprint on my straight talk. It took multiple phone calls to get them to finally get me to LTE Spark. My phone was not rooted before this was done. They said a few times that my device was not LTE compatible but it can be done and I am proof. I had to call back for months on my renew date because it reverted back to 3g. This past month I had no issues. Like I said I needed the sprint Sim. There is an option in settings more that you can change to CDMA LTE and that needs to be done first and then you need to update your profile firmware etc. I don't know what effect it would have on your root access. Probably none. If not u may have to re root. Does this help?
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
You're getting LTE because you have it activated on the CDMA side of Straight Talk. When you're using it on GSM, LTE is not possible
[Sprint Samsung Galaxy S 4 General] CapitalParallax:
While technically a different device, I think you have the right concept.

I recently had another conversation with yet a different Straight Talk rep. Though every single one says something different, this most recent "reason" I don't get 4G makes the most sense thus far. According to the rep, my device is not accessing the 4G network because I do not have a Sprint SIM card in it. I've come to find that's really the whole purpose of the Sprint SIM. Had I been a Sprint customer, I would be seeing the same lack of 4G with no SIM. I haven't gotten around to it, but the general consensus of the internet is that I have the best chance to obtain one through Sprint's International Customer Support (despite not being a customer or international).

--

Why do you say that? Is that a hardware limitation of this particular variant, or a limitation of Straight Talk's stupidty? I had an Verizon Galaxy S4 getting 4G on Straight Talk's GSM side. I gave the phone to my gf and she was getting LTE on AT&T. I know, again, technically different devices, but close enough to speculate.
[Sprint Samsung Galaxy S 4 General] EngineManShawn:
The sprint Sim was essential. Lucky when I bought the phone from a friend he had left it there. I did make a mistake earlier. I Have LTE /CDMA working. I believe the issue is that if you have Sprint spark my model does sph-l720t. Sprint doesn't want you to have Sprint spark and that is why it took so many calls and complaints. Eventually they give in and you can find a representative that will set it up. Sorry about that mix up. Now I just need to find all the tools that I need to use my rooted device to its potential. Want to get rid of all the garbage without doing any damage. Thanks
[Sprint Samsung Galaxy S 4 General] CapitalParallax:
To that end, I highly recommend CyanogenMod. It was recommended to me as a good starting point to get into custom ROMs. It's the first and only one I've tried so far, and have been very happy with it. There's a healthy community of support and it was very easy to flash. It's probably the simplest way to strip all the crap and keep all the functionality.
[Sprint Samsung Galaxy S 4 General] EngineManShawn:
I'm going to attempt that tonight. Ty. I will be asking more questions I'm sure.!
[Sprint Samsung Galaxy S 4 General] dpetchy0817:
Invalid SIM (Cricket)

I have a Sprint s4 with the MDC modem, on a debloated stock rom (4.4.2) currently, and I am trying to activate the device on Cricket wireless.

I have a brand new nano sim in the micro adapter inserted in the phone. The sim card is active with Cricket.

Fixed the invalid sim (turns out sprint didn't do the international unlock as stated).

I followed all the steps in the OP (did it three times to be sure I didn't mess up) and even tried a few corrections people made in the thread, my phone shows no signal. In the APN menu, I added the Cricket APN and that seems okay. In the about phone settings the phone number, network, and all that shows as unknown.

Any ideas? I really need to get off sprint as the service is terrible in my area (gotten much worse since I joined 10 years ago).

I read up to page 70 in here already and i'll keep reading but I'd appreciate some help.
[Sprint Samsung Galaxy S 4 General] dpetchy0817:
No Audio

Okay I completed the unlock, and have voice, text, and data. The issue i'm now having is that for calls or any app, video and audio will not play at all! I've tired stock, stock based, and cm12.1 roms with the same exact results .

Also mms doesn't work (on Cricket with the correct apn from their site).

Any ideas?
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
Why are you on MDC modem...????

That's your issue.
[Sprint Samsung Galaxy S 4 General] dpetchy0817:
I've tried several times to update the modem via odin, and it wouldn't stick. I somehow just tripped the "system software not authorized by samsung" message so had to reflash the whole phone to the stock rom in odin. That is setting up now. I used the NG2 tar, so I think I should be good. Does that sound about right?
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
Yep
[Sprint Samsung Galaxy S 4 General] anthony.j.etienne:
Hey guys I unlocked my S4 and using it on simple mobile. My problem is getting voicemail set up for simple mobile with the new number? The phone number shows the sprint number in settings > about. What should I do?
[Sprint Samsung Galaxy S 4 General] Duwhop31:
S4 SPh-720

Ok I did all the way down to adding the ril-lol & ro-lol & manually restarted my phone & now it wont turn on at all.. it will vibrate & say the galaxy s4 logo then it shuts off. How do I get to come.bak on? Its 100% charged. Thanks, Dallas.
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
Rule #1: never follow an OP that is almost 2 years out of date
[Sprint Samsung Galaxy S 4 General] Duwhop31:
What to do

[MENTION=3163377]iBowToAndroid[/MENTION] what can I do now? Or how do I get it to @ least turn on? Sorry & thanks....
[Sprint Samsung Galaxy S 4 General] mattzeller:
Can you get into download mode? (Volume - & power}
[Sprint Samsung Galaxy S 4 General] Duwhop31:
Re

Yes but it wont even stay on it cuts off then cuts on to thw logo & off agin. I thnk maybe the battery but I.just put it on the charger & it says 59% & I think it is charging...
[Sprint Samsung Galaxy S 4 General] Duwhop31:
S4 SPh-720

[MENTION=3163377]iBowToAndroid[/MENTION] I.just plugged my s4 n & it says 94% soo it cant b battery right? & I can get to that dwnload where it says to hit vol up or dwn to cancel.. what do I do there or then?

---------- Post added at 10:26 PM ---------- Previous post was at 10:08 PM ----------

[MENTION=3163377]iBowToAndroid[/MENTION] this is what is says when I hit vol up after holding vol dwn & power

Current binary custom

System status custom

Reactivation lock off

Knox kenel lock 0x0

Knox warranty void 0x1

CSB-CONFIG-LSB 0x30

Secure download enable

Enable

Enable
[Sprint Samsung Galaxy S 4 General] mattzeller:
Go into download mode, and flash stock via Odin from sammobile.com
[Sprint Samsung Galaxy S 4 General] Duwhop31:
@ibowtoandroid

[MENTION=3163377]iBowToAndroid[/MENTION] or [MENTION=5089224]mattzeller[/MENTION] my phone is a 100% charged now I just need to know how to download Odin I have Odin 3 v 307 when I bring it up it has auto reboot and F reset time already checked and if I plug my phone in with it on download mode it says 0.01 added or something like that and I can click on PDA and bring up a tar file that's on my desktop and click Start and it starts put in information underneath that added thing but I don't know what else to do or I don't think it's working so is that so is that Holden 3d whatever okay to have or do I need just regular Odin and where can I download it to where I can run it as an administrator on my computer same with the tar file I'm sorry just what do I need to do to get my phone to get my phone working it's a samsung galaxy s4 SPH-L720T 5.0.1. Please if either one of y'all can help me out, I would greatly appreciate it. Thanks Dallas
[Sprint Samsung Galaxy S 4 General] mattzeller:
Right click on Odin and select run as administrator.

Uncheck reboot and f reset time.

Click on PDA and select the tar file that is the stock ROM.

It's going to take a few minutes for it to make sure that the file is OK once that is done plug your phone into the computer via USB cable.

Once your phone is recognized in the upper left hand corner you should see something under the com section.

If it gives you a com number you're good to go, just press start.

you're going to see a progress bar in the upper left hand corner it says what you're doing wait until all of that completes. then down in the message box it will tell you when it is complete weather has been successful or failed.

When it says that it is completed unplug your phone from the computer and restart it.

If you have trouble booting at this point just reboot into recovery and do a factory reset and then reboot, that first boot is going to take a while like in the order of 15 to 20 minutes, so be patient
[Sprint Samsung Galaxy S 4 General] Duwhop31:
@ibowtoandroid

[MENTION=3163377]iBowToAndroid[/MENTION] I did it & the status bar on my phone went all the way green & the computer Odin said pass & I took it out & tried to power it on & still the Samsung logo& it went off..m
[Sprint Samsung Galaxy S 4 General] mattzeller:
Go into recovery and factory reset
[Sprint Samsung Galaxy S 4 General] Duwhop31:
@ibowtoandroid

[MENTION=3163377]iBowToAndroid[/MENTION] or [MENTION=5089224]mattzeller[/MENTION] how do I factory reset it? Is that where I hold vol up home & power then go to wipe all data? & 1 more quest. Last night my S4 was charged fully & whn I put it on the charger this am its @ 0%. But whn I did the root & factory reset last night it was 100% . How can I tell if its t/e battery if it does charge but somehow drains without bein on?
[Sprint Samsung Galaxy S 4 General] mattzeller:
Yes, not just caches

If it's off there is no way it should have depleted to 0%. Could be either the battery or the charger.
[Sprint Samsung Galaxy S 4 General] idklol1:
I did all the steps and unlocked my Sprint Galaxy s4. I can call and text but my 4g/LTE doesnt work. Any fix to that?
[Sprint Samsung Galaxy S 4 General] mattzeller:
Are your APNs correct?
[Sprint Samsung Galaxy S 4 General] idklol1:
Yea, im using the fast.t-mobile one. and in Network mode, there's no option for GSM/LTE or 4g. Only GSM/UMTS
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
That's normal. You won't get LTE, just HSPA+. Still 4G though
[Sprint Samsung Galaxy S 4 General] asadnow2k:
dose this mathod work with 5.1?
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
There is no 5.1 for the S4
[Sprint Samsung Galaxy S 4 General] asadnow2k:
i mean 5.0.1
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
The phone can be unlocked on all versions. However, the OP is out of date. You'll have to read the thread to find out how
[Sprint Samsung Galaxy S 4 General] asadnow2k:
i have tested few phones to unlock on 4.4.2 and they worked via octopus box. but 5.0.1 is making me sick. busted 3/4 days but still unable to figer out. can u link me to exect post?
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
1. Don't use boxes.

2. The info isn't in one post. It's all over the place. You'll have to read. (or just pay someone to do it ;) )
[Sprint Samsung Galaxy S 4 General] eric303:
has anyone had success doing this on 5.0.1 L720VPUGOH1? I had it working on kitkat but the phone forced the update to 5.0 and now it dont work, i've tried to repeat the same process but still no dice

shows invalid sim card
[Sprint Samsung Galaxy S 4 General] truwrxtacy:
cant edit my last post, but for anyone thats on 5.0.1 what you need to do is downgrade your modem to MDC, then it'll work. But i'm still only getting edge instead of HSPA, will report back if i can fix it
[Sprint Samsung Galaxy S 4 General] aaroon200:
Well, after many failed attempts to unlock my SPH-L720 I finally did it with this tutorial and one single app ( SSU.apk ). First I root my device ( version L720VPUFNG2 ) and I downgraded the Moden to SPH-L720_MDC_Modem , then downloaded the app and I unlocked the phone and I followed this tutorial and thats it..

Now I have my sprint galaxy 4 s on a T-mobile Sim card. :cool:
[Sprint Samsung Galaxy S 4 General] eric303:
hm.. the SSU should only be the international unlock, not the domestic unlock. I'm doing another L720 on lollipop but this time i'm having issue with the invalid sim, no matter what i do it still says invalid sim.
[Sprint Samsung Galaxy S 4 General] aaroon200:
I did the intentional unlock first, then I did the domestic with this tutorial.

If you keep having the same issues of invalid sim error try the app and see what happens, it work for me ?
[Sprint Samsung Galaxy S 4 General] dragonhart6505:
No hope of downgrading OH1 modem for unlocking US?
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
Any version can be downgraded
[Sprint Samsung Galaxy S 4 General] dragonhart6505:
So just pop the modem.bin in ap and start?
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
Can't flash bins in AP. Would have to convert to tar. Use CP
[Sprint Samsung Galaxy S 4 General] flfatboy:
I have followed the instructions, but the one click odin fails, then I odin to stock again.

I have 5.01 , how can I get this phone on T-mobile?

Thanks.
[Sprint Samsung Galaxy S 4 General] cfli1688c1:
try this link:

http://xdaforums.com/galaxy-s4-sprint/general/info-sprint-galaxy-s4-sim-unlock-sph-t3144530

i was on 5.01. OD2 and was able to goto NG2 and run thru all the steps with success.
[Sprint Samsung Galaxy S 4 General] ka26:
U 7h5tuiì8u6gf8gff8tg867t85878i648i9[/IMG][/IMG]
[Sprint Samsung Galaxy S 4 General] rhampong:
I unlocked my SPH-L720 sprint for international GSM use using some other thread. I checked that it did recognize the GSM networks outside of the USA using an unactivated sim card. Anticipating future use in the USA. I followed the instructions for domestic unlocking. However at the end of the process, the phone seems set to CDMA and entering the service menu *#0011# shows a No service message on black screen. I cannot set to GSM mode (go back to international use) for my country ( There is no CDMA networks where I am)

Thanks
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
You can always set it back to GSM mode. Settings->More networks->Mobile Networks->Network mode
[Sprint Samsung Galaxy S 4 General] rhampong:
I f I recall, there was no option to set to GSM. I must have not done the resetting part properly. Anyway I reflashed my ROM back to OEM and unlocked it again internationally. So that's good that I managed to do that. If I get up enough encourage, I may try to unlock it for GSM domestic again. The procedure is very complicated.

Thanks
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
It's only complicated because there's so much info to sift through. The tutorials that are out there are overly repetitive, with too many unneeded steps thrown in. It's really 3 individual steps, when it comes down to it. Can be done in less than 5 minutes.

1. SIM unlock

2. Flash correct modem

3. Hidden menu steps
[Sprint Samsung Galaxy S 4 General] vq35ftw:
I have this same issue. At one point I was able to get h+ with the wcdma option. But the towers went down in the area and I wasn't able to get it back until I switched to gsm only. I currently am able to get voice and data but only on 2g. I've tried multiple different apn settings. And every time I try to go back to wcdma I get no signs of life.
[Sprint Samsung Galaxy S 4 General] vq35ftw:
I figured out my issues. I actually wound up getting a att s4 and looked at the settings off that phone. Didnt get much info though.i wound up just changing one thing. Under the service mode check [3]lte, then [5]pref mode set, the [1] gsm/wcdma only. After I did that 4G was available.

It sucks that I had to get another s4 but I got it for a good deal so I guess this sprint s4 will be my back up.
[Sprint Samsung Galaxy S 4 General] XLiLSharKy408X:
How do you revert it all to oringal setting? How do I undo this lol I'm going to be selling the phone and they need it for sprint not tmobile
[Sprint Samsung Galaxy S 4 General] chopchopw:
Hello,

I have a problem where my phone only connects to LTE. If i force CDMA mode, it just shows full bars but no 3g symbol. Does anyone know of a fix? LTE only has one bar near my new place.

Thanks
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
Just reflash a factory tar. Will work fine on Sprint after that

So you have LTE coverage in your area but no GSM/UMTS/HSPA? Doubt that very much.... put it in GSM/UMTS mode and it should work fine
[Sprint Samsung Galaxy S 4 General] ThOnly1Lft:
So is there no way to enable full 4G LTE when using a sim and using METROPCS???
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
Negative
[Sprint Samsung Galaxy S 4 General] ThOnly1Lft:
Negative as in there is no way to do it or negative as in i'm wrong in saying there is no way to do it?

Can i get TRUE 4G LTE working on this phone, yes or no.
[Sprint Samsung Galaxy S 4 General] rhampong:
undo changes

It did not work. I eventually had to reflash to a stock ROM (L720VPUFNG2) and did a factory reset. But it seems as though my international unlock using the S4 unlock flasher is no longer working ) even if I retry the international unlocking again ( even though it says completed and reboots.

Some settings must have been changed not affected by reflashing ROM preventing the S4 flasher from working properly.

What are the default settings so I can undo those changes I made attempting domestic unlock ?

Thanks
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
No
[Sprint Samsung Galaxy S 4 General] Iigbinoghene@gmail.com:
Hi I followed the instructions and after reboot WiFi doesn't work. I tried redoing steps with no luck. Please help