yashsingh1/xdaforums huggingface dataset:
[Sprint Samsung Galaxy S 4 General] dwh1983:
help once more.

Ok, at the risk of sounding like an idiot again, I still can't unlock the Sim card so I can use my t-mobile card. I've downgraded to mdc, have Philz touch recovery, and have tried everything I can, but have had to reinstall stock rom, re-root, so I at least have a working phone. I have a sprint L720, hardware L720.08, Knox 2.3. Maybe I used the wrong rom? Ibe searched the thread and followed any and all directions to make my sprint phone to tmobile, with no luck at all. HELP!!!!!:crying:
[Sprint Samsung Galaxy S 4 General] Wanabedev83:
Hi everyone, probably on wrong thread but i cat seem to resolve my issue and hopefully someone can help. I went threw all the steps and procedures for the international unlock witch seemed to work but could never stick to a network. I would get a movistar indication from the sim but would then dissapeared and not work, since i was unable to find an NG2 modem i went ahead and flashed the whole firmware. It seemed to have worked, the sim card and signal stuck with and does not go away but now i have the following issues. I keep getting an "ItsOn force closing and a ZACT Mobile" prompt to update and is somehow in the way. But my main issue right now is that the phone is useless communication wise, meaning i can't make / receive calls or send receive messages. When calling it rings as busy but the device will ring and when i try to answer it will just drop, making calls is impossible, as soon as i hit the green it just closes and drops the call but the service is there i just cant use it. Any help is appreciated and thanks in advance. I'm stock NG2 Rooted with twrp.
[Sprint Samsung Galaxy S 4 General] iBowToAndroid:
Reflash stock tar
[Sprint Samsung Galaxy S 4 General] Okijaamaka:
i know you have helped me often

please give me summary how to add GSM or 3G to my S4 Mini Model SPH-L520

please
[Sprint Samsung Galaxy S 4 General] klh22:
After *#0011#

I tried using "1" and "2" when I went into key input. It did not work, what so ever. I did find a code that worked for my phone though, I don't know why it was so different. You need to dial *#0011# after that menu, back, just like you stated, "key input" and instead of "1" put in a capital "Q" , select OK, menu again, "back," "key input" once again and the second time enter "0000", then "OK", "Menu", "Back", then if you wait about 10 seconds, the other menu will come up!

Thanks so much!!!!
[Sprint Samsung Galaxy S 4 General] MiamiMike:
This works!

Just wanted to share some additional info.

After running through the proceedure you can stay on the kitkat version and have everything work perfectly.

In addition you can put a new rom, in my tests Google Play version 5.0.1 which can be found on xda here which also worked perfect.

Lastly I took a stock Sprint SPH-L720 5.0.1 Lollipop rom, put that on the phone, then put the modem provided in this post and it also worked perfectly.

For me I liked the Samsung touchwiz and went to that version.

You may have to input the APN info which can be found from T-Mobile here or find the other GSM providers info and you will get your LTE as well.

Thanks to all the people who posted this and the other referenced info!!!
[Sprint Samsung Galaxy S 4 General] abbyzou:
Also working w/ T-Mobile

I was wondering how's your signal with T-Mobile? I had previously read someone getting low signal, which I'm experiencing, but I want to make sure it's just T-Mobile sucking in my area.

Also- anyone having issues, a few pages back (page 154 for me) is an awesome little guide by Markon101 on using Lollipop to do this. It definitely saved me. If you get a process error spam after changing roms, just factory reset and proceed as normal.
[Sprint Samsung Galaxy S 4 General] MiamiMike:
It does work LTE, if you install the m919 rom as the instructions state it does work perfectly.

If you burn another ROM I'm not sure the additional steps required, but it may be here somewhere.

---------- Post added at 03:05 PM ---------- Previous post was at 02:48 PM ----------

Did you downgrade OS?

You have to start of in kitkat.

The insrtuctions are very clear, I did this 3 times and it's well documented here.
[Sprint Samsung Galaxy S 4 General] MiamiMike:
For me the signal was a major improvement and speed for download was in some cases 20 to 1, so it was a good change. Every area of course has it's good and bad spots and I'm sure some areas are not so great.

Using tools like speedtest also have reports showing the best performance in the nation from T-Mobile. I did notice on a cheap phone ( Nokia Lumia 635 ) the signal was a little weaker than my Samsung GS4 so the quality of the equipment on the handset side is also a factor.
[Sprint Samsung Galaxy S 4 General] MiamiMike:
Not sure if you got your answer but the unlock method is in this OP!

Sprint does NOTHING for you so don't waster your time. You may or may not need your MSL code during the process.

All covered here. Just in case I'm jumping threads this is the link http://xdaforums.com/showthread.php?t=2530610
[Sprint Samsung Galaxy S 4 General] optimummind:
You're quoting me from 4 months ago! :) My S4 was DSU'ed and sold. :D
[Sprint Samsung Galaxy S 4 General] MiamiMike:
Sorry! I was bouncing looking for a different thing and saw your post without a response within a few pages and thought I would share the info.

:good:
[Sprint Samsung Galaxy S 4 General] NATHANNEZ1984:
rom flashing help after unlock

hello i am just wondering how to flash a newer badass rom to my newly unlock l720. i tried to flash the latest cm12 nightly but no signal, so i flashed back to my backup and am still running the m919 tmobile rom. can someone please help. thank you very much
[Sprint Samsung Galaxy S 4 General] illtww:
What is the latest rom you can run on this base? Other than CM 12.1?
[Sprint Samsung Galaxy S 4 General] illtww:
Do you have a lollipop rom working with LTE if so Please share? (name/link) I have a lollipop rom working but only on HSPA.
[Sprint Samsung Galaxy S 4 General] MiamiMike:
I believe if you run the T-Mobile ROM it may work, in my case ONLY HSPA.
[Sprint Samsung Galaxy S 4 General] wtf911:
Does anyone have 5.1.1 working with T-Mobile? I've tried the latest 5.1.1 GPE ROM but the WCDMA setting won't stick and it keeps reverting to Sprint. Note: Fully internationally and domestically unlocked, with 5.0.1 GPE it was working fine just until I updated to the newer GPE.
[Sprint Samsung Galaxy S 4 General] BinaryWork:
Tried to flash the MF9 ROM and it is not working. I think the best bet would be to flash a NAE ROM and then try to flash the MF9 ROM.

Is it possible for me to just flash the MDC Modem on the NAE ROM? Will that work?

Edit: NAE ROM is flashing right now without a problem. I think the reason the MF9 ROM wasn't working was due to the fact that I was running the Dirty Unicorns ROM!

Edit: NAE ROM is good and my phone is finally working again and booted. On the phone with a MetroPCS Tech and we are going to try to unlock the phone OTA before I have to attempt this process.

Edit: Was unable to unlock my phone successfully

Edit
[Sprint Samsung Galaxy S 4 General] MiamiMike:
No, I'm running Spring SPH-L720 with it's older modem.
[Sprint Samsung Galaxy S 4 General] EngineManShawn:
I have a sprint l720t running with LTE and spark off of straight talk.
[Sprint Samsung Galaxy S 4 General] CapitalParallax:
Information Overload

Good god. This is all WAY too much to take in all at once. With over a hundred pages in this thread that started two years ago, the more I read the less confident I feel about all this. I am searching, reading, and learning, but there is just so much to keep track of! I fear I am getting in over my head. Here's my situation:

I have the SPH-L720 currently operating with Straight Talk on Sprint's CDMA network. I do not get 4G LTE, and Sprint's service basically sucks anyways. After several days of digging and countless hours with at least eight different customer service people, I now believe my lack of 4G is due to Straight Talk's limitations. The vast majority of their 4G LTE service is on their (AT&T's) GSM network. ST is sending me an AT&T compatible SIM to be used on their GSM network. In the mean time, it is up to me to get my phone domestic SIM unlocked. I've contacted Sprint, and the best assistance they could offer was the MSL number.

-ROM CyanogenMod nightlies. Currently on cm-12.1-20151003-NIGHTLY-jftlespr

-Android Version 5.1.1

-Baseband Version L720VPUGHOH1

-Kernal Version 3.4.107-cyanogenmod-g3e0912c

-Build Number cm_jfltespr-userdebug 5.1.1 LVY48F 1babeed11f test-keys

-Recovery TWRP

My concern is that I catch things here and there saying that if you've updated something so far, you cannot safely go back. References to basebands and kernals always seem to be regarding TouchWhiz versions, which clearly CM has changed to their own things. So I never know if I am past that point of no return. Warranty means nothing to me, so I at least have that going for me.

My question is, can I safely follow these guides to domestic GSM unlock my device to be used with an AT&T compatible SIM with Straight Talk AND expect 4G LTE (assuming the coverage exists). If I'm not going to get 4G at the end of all this, there's no reason to take the risk. Do I really need to read through 100+ pages, spanning two years, to find all this?

Thanks so much. Sorry to be a total newb here, just starting to get a bit frustrated.
[Sprint Samsung Galaxy S 4 General] bremos812:
You need to get in contact with [MENTION=319373]idone[/MENTION] [MENTION=319373]idone[/MENTION]apps that would be the easiest way and you will not get 4LTE I think only 4g or hspa+. If you are looking to do yourself start with changing your modem to 1 that can be internationally unlock then you can get it to work with a GSm carrier
[Sprint Samsung Galaxy S 4 General] CapitalParallax:
I just looked into the IDOne app and do not understand how that is useful in any way.

I understand the HSPA+ is actually pretty good and even comparable to LTE in some instances, so that would still be a significant upgrade from 3G.

Thanks for the lead.
[Sprint Samsung Galaxy S 4 General] bremos812:
Idone made a unlock for sprint Samsung Galaxy phones

http://idoneapps.webs.com/
[Sprint Samsung Galaxy S 4 General] CapitalParallax:
Ahhh. I see now. Thank you. I am trying not to pay for this, but it may come down to that if I cannot approach it with confidence.
[Sprint Samsung Galaxy S 4 General] bremos812:
Then you must read thru the thread. you can also use search to answer some of your questions. I'm sure any you can think of has been answered. Sorry but most will not help you because of your first post. people hate to be asked how to do something when it is already explained good luck!
[Sprint Samsung Galaxy S 4 General] illtww:
Which specific rom and modem?

you on tmobile?