yashsingh1/xdaforums huggingface dataset:
[Sprint Samsung Galaxy S 4 General] davorsake:
So I got everything working on my L720T.. My only concern is that will I be stuck on 4.3 if I want to keep LTE? I noticed the ROM I installed was actually a T-Mobile rom, any chance I could use a Lollipop T-Mobile ROM? Or is this version made to work with L720/L720T?
[Sprint Samsung Galaxy S 4 General] sameer9092:
Hi i bought the s4 at first i didn't know if it was rooted or not but further investigations i found out it was rooted. The phone doesn't have that ssu apk nor superuser.apk which is kinda odd i ran apps that require root access and they worked fine i didn't receive any pop ups to allow access or block. I want to install a rom for which i need to install a recovery now my question is do i have to root again?

Q. How do i know what modem is currently installed ?

Q. Also at first i could see my carrie's name in notification bar now i see sprint is it locked again i can still use my sim and i am getting signals

Pease help i'm new to flashing modems.

Thanks in advance
[Sprint Samsung Galaxy S 4 General] nfsmww:
Best thing to do is start over and just follow every step by step you should have unlock just do what I told you in the thread , just go slow step by step I explained everything you Don't need to check anything
[Sprint Samsung Galaxy S 4 General] nfsmww:
You could but the phone is going to lag a lot and freeze my friend did that but sometimes it just freezes
[Sprint Samsung Galaxy S 4 General] nfsmww:
You need to downgrade from the link I have in the post please guys don't skip steps and read carefully
[Sprint Samsung Galaxy S 4 General] sameer9092:
doing the rooting process again won't harm phone right
[Sprint Samsung Galaxy S 4 General] MiamiMike:
I did downgrade the modem 100% as the instructions state, but in the end the sim card doesn't work.

Running Lollipop 5.0.1 SSU won't run, so I can't do the "unlock" part.
[Sprint Samsung Galaxy S 4 General] MiamiMike:
You have to consider your warranty and carrier support if you root your phone.

I have rooted my phones hundreds of times without issues.

Pretty much everyone on this site I'm sure can say the same.

As long as you are careful to follow instructions you should be fine.
[Sprint Samsung Galaxy S 4 General] nfsmww:
Downgrade your firmware not your modem , I am talking about downgrading them both READ CAREFULLY FOR GOD'S SAKE
[Sprint Samsung Galaxy S 4 General] MiamiMike:
You are correct, I started in the download section of the instructions missing the first important part to downgrade first!

New Issue: Image provided IOdin executable fails several times, I use Odin so I'm familiar with the process, do you have an image onlY?

Let me ask you, once I go through the process can I upgrade to Lollipop OTA from TMobile or some other ROM without breaking the modem functionality?

Thanks!
[Sprint Samsung Galaxy S 4 General] nfsmww:
I don't get it do u want Lolipop or ur phone working just do it and not you will have 4.4.2
[Sprint Samsung Galaxy S 4 General] davorsake:
We're only asking questions that we assume you would have the answer to. No need for hostility.
[Sprint Samsung Galaxy S 4 General] MiamiMike:
I have completed the steps EXACTLY as written twice without success.

Has anyone been able to accomlish this?
[Sprint Samsung Galaxy S 4 General] HermitDash:
This can be accomplished but not with his guide for he is missing some steps. Most likely copied and pasted from another thread found here:

http://xdaforums.com/showthread.php?t=2530610

Use this ^ if you wish for a Domestic Unlock and a International Unlock.

Then if you want 4G LTE just follow this guides flashing of the M919 Stock ROM which is from the T-Mobile Galaxy S4.

Enjoy~
[Sprint Samsung Galaxy S 4 General] MiamiMike:
Thanks! This worked!!!, a few kinks and I may simply redo the process to be safe since there are a lot of steps.

If I put lolipop on here will I then trash it?

Since I'm not at the Ninja level on this, couldn't someone create a AOKP rom with a clean AOSP, drop in the drivers from the sprint phone ( which I beleive are really just the modem ) using the downgraded modem already unlocked and create a custom ROM? Then the user can get the benefits of keeping up with Android updates more frequently while using there hardware on the GSM platform? ( wow thats a long question )
[Sprint Samsung Galaxy S 4 General] HermitDash:
Lollipop will work on it, the latest it has is the OD2 firmware which is Android 5.0.1 if I'm not mistaken. I'm using the exact one and it still works. As for custom roms, you can use any since the modem is just a plugin of a sort. So if you want to do that all you need is to stay on the MDC modem make sure you are unlocked and working with T-Mobile or what ever carrier. THEN flash over to the AOSP/AOKP or what ever rom you want and it should work. The only reason you need to be on stock firmware is to do the Unlocking via Dialer Secret codes. But after that you should be working perfectly fine with AOSP/AOKP. If I remember correctly there should be a GPE (Google Play Edition) rom somewhere in the Dev forum for GS4 have a look around!

Good luck.
[Sprint Samsung Galaxy S 4 General] nfsmww:
First I didn't copy anything and since you guys are asking I will post a video tomorrow and also I have a link for a Lolipop rom too for tm , are you guys happy now
[Sprint Samsung Galaxy S 4 General] illtww:
any update?
[Sprint Samsung Galaxy S 4 General] jellomonster54994:
is it really 4g?
[Sprint Samsung Galaxy S 4 General] lukipt:
no :( this is bad tutorial I lost my signal :( how to back to default settings?!!!
[Sprint Samsung Galaxy S 4 General] dzu001:
you can restore service mode settings, look thru menu
[Sprint Samsung Galaxy S 4 General] lukipt:
how to open thru menu and restore settings

can you write tutorial for me? please :crying:
[Sprint Samsung Galaxy S 4 General] dzu001:
Service mode> Umts Main Menu> Common > Nv Rebuild> Restore Back-up
[Sprint Samsung Galaxy S 4 General] lukipt:
where is service mode?? how to turn on??
[Sprint Samsung Galaxy S 4 General] dzu001:
Same as you entered Service Mode previosly, go to dialer > *#0011# etc.

Restoring settings will remove sim unlock, so do it again with SU app
[Sprint Samsung Galaxy S 4 General] drivers1492:
I had already unlocked my sprint s4 but the net speeds were horrid. flashed the rom listed here it's moved from a .9 downstream originally to a solid 9 now. Made a drastic increase in speeds but still cant send a friggin pic message......have to work out the apn issue later.
[Sprint Samsung Galaxy S 4 General] madebayo:
Question.

Im very new to this. But I was able to actually follow the directions posted, use odin, and get my sprint l720t phone working on att network. Now, im about to follow these directions to get the 4g working on this phone. Is there a program I need to download for it to work on ATT network? Is there a way to get the hotspot working also. Thanks in advance. Keep in mind, im very new to this. But this site is awesome.
[Sprint Samsung Galaxy S 4 General] maurogg84:
I'm already unlocked both domestically and internationally. However I only have 3g with cricket using an international TW ROM . If I follow this tutorial, do I have have to stay with that ROM provided? Or can I flash any other TW ROM?

I have the l720
[Sprint Samsung Galaxy S 4 General] pclov3r:
Just to make it clear for people looking at this it's IMPOSSIBLE to get LTE with another provider besides sprint. The phone doesn't physically support the required bands.

Flashing the M919 rom doesn't change anything. There was period of time T-Mobile and AT&T were calling HSDPA 4G which is wrong and leading to the confusion here. HSDPA is a 3G tech.

It's only possible to have 3G with cricket.
[Sprint Samsung Galaxy S 4 General] EngineManShawn:
S4 sph-l720t sprint running on straight talk used cf autoroot and my device

I rooted my device much easier than that. I played and fiddled and maybe got lucky. I have root access and never even lost the Sprint spark. I use straight talk. Already in service with 4g and then acquired root access. Now I'm learning what root is all about. I was also upgraded to lollipop 5.0.1. at the time. Had issues with the su binary update for about two weeks but I figured away to get around it. Made me really happy. If I could only understand code. I keep learning! ?
[Sprint Samsung Galaxy S 4 General] chilsaoui:
after installing stock m919 rom it shows 4g but its only 3g
[Sprint Samsung Galaxy S 4 General] Mozze3291:
It worked for me. I had a L720 sitting around and I just fixed the screen. I was on 4.4.2 and had a lot of trouble with it. Things I did to fix it.

1.) Download 4.4.2 from sammobile and start there on a fresh install. I had tons of problems with supersu and twrp and that was the root of the issue.

2.) download twrp in tar format not .img format I acctually had to download the previous version of twrp.

3.) It wasn't very clear in the directions that when you follow the arrows. just selecting the number was saving the changes.

4.) following the link on page 2 of the full post to get 4g lte working. 4G LTE was not working after I followed all the directions.

So now I only have 1 issue, when the Tmobile rom is loading I get the seandroid red message before it boots? but everything is working 100% on Cricket (at&t)
[Sprint Samsung Galaxy S 4 General] ToXiTe:
What happens when I flash Lollipop again? Will it get locked again? Is this safe to flash?
[Sprint Samsung Galaxy S 4 General] jellomonster54994:
Will relock if you flash original od2 modem to relock it flash lollipop to use sprint

And yes 100% safe to flash on sph-l720 not sph-l720t
[Sprint Samsung Galaxy S 4 General] Nazfaust:
I'm a lil stuck in NAS CONTROL section, having sim class control to switch from GSM to UMTS, when i press UMTS it takes me to next page with only "1" option that doesn't really do anything that I know of.... are you aware of this obstacle?
[Sprint Samsung Galaxy S 4 General] gamescan:
Agreed. This thread is just a repost of previously existing tutorials with a supersized font and OP's donation begging. Read through the original thread if you want to get the unlock done.
[Sprint Samsung Galaxy S 4 General] Geofferey:
For those of you trying to update to Lollipop (OD2) after unlocks.... There is a modified OD2 modem that you can flash though Odin & maintain the unlock. There were some questions as to whether it was legit or not at first but users reported success. I have not tested the modem myself.

Modified OD2 Modem
[Sprint Samsung Galaxy S 4 General] dea1222:
very confused noobie

So, I have a Samsung S4 L720T (triband) that's running Android 5.0.1 (Lollipop). I am out of luck? Is that correct?

I now . . . I mean "I know" it is impotent . . . I mean . . I know it is important to follow the provided steps but the steps are lacking in clarity and the syntax is way over the head of a noobie or someone who speaks standard English. I appreciate you're trying to help but . . . . my goodness.

So, my L720T runs on GSM via a modification from the Minnesota guy. Did I potentially waste my money? Since the L720T has the capability of running on CDMA and GSM providers, will your instructions, be they what they are, allow me to change my L720T back and forth from GSM to CDMA?

---------- Post added at 05:11 AM ---------- Previous post was at 04:49 AM ----------

What does "OP" mean? Original Poster? Orange Phallus? Orangutan's Pick? I know it's all so very common or familiar to y'all but those on the "outside" don't have much to go on. It's a common illness. One see's it in the military, in all professional occupations, and in long-term organizations (SSA, VA, PETA, et cetera). Fewer acronyms would be greatly appreciated. Or at least one explanation citation upon first use, as is common and required in documents and papers for general release. For example, if I were to use the acronym WWF in my document, paper, or post more than once, I would write, "The Western Wacky Foundation (WWF) is a group of wacky folks who began a foundation to keep those who are interested informed about wacky stuff. The WWF originated . . . . ."
[Sprint Samsung Galaxy S 4 General] naelopan:
Can i still use the L720t on Sprint after doing GSM unlocking?

Can i still use the L720t on Sprint after doing GSM unlocking?

Thanks for the instructions. I am just wondering if i am still able to use L720t on Sprint's mvno, Boost, Ringplus etc after doing the domestic GSM unlocking? Doe downgrading the modem affect anything on Sprint network?
[Sprint Samsung Galaxy S 4 General] asadnow2k:
when i try to downgrade L720 this is the error i m facing

<ID:0/016> Added!!

<OSM> Enter CS for MD5..

<OSM> Check MD5.. Do not unplug the cable..

<OSM> Please wait..

<OSM> Checking MD5 finished Sucessfully..

<OSM> Leave CS..

<ID:0/016> Odin v.3 engine (ID:16)..

<ID:0/016> File analysis..

<ID:0/016> SetupConnection..

<ID:0/016> Initialzation..

<ID:0/016> Get PIT for mapping..

<ID:0/016> Firmware update start..

<ID:0/016> sbl2.mbn

<ID:0/016> sbl3.mbn

<ID:0/016> rpm.mbn

<ID:0/016> aboot.mbn

<ID:0/016>

<ID:0/016>

<OSM> All threads completed. (succeed 0 / failed 1)

<ID:0/016> Removed!!

<ID:0/016> Added!!

<OSM> Enter CS for MD5..

<OSM> Check MD5.. Do not unplug the cable..

<OSM> Please wait..

<OSM> Checking MD5 finished Sucessfully..

<OSM> Leave CS..

<ID:0/016> Odin v.3 engine (ID:16)..

<ID:0/016> File analysis..

<ID:0/016> SetupConnection..

<ID:0/016> Initialzation..

<ID:0/016> Get PIT for mapping..

<ID:0/016> Firmware update start..

<ID:0/016> sbl2.mbn

<ID:0/016> sbl3.mbn

<ID:0/016> rpm.mbn

<ID:0/016> aboot.mbn

<ID:0/016>

<ID:0/016>

<OSM> All threads completed. (succeed 0 / failed 1)

<OSM> Enter CS for MD5..

<OSM> Check MD5.. Do not unplug the cable..

<OSM> Please wait..

<OSM> Checking MD5 finished Sucessfully..

<OSM> Leave CS..

<OSM> All threads completed. (succeed 0 / failed 0)
[Sprint Samsung Galaxy S 4 General] micbro:
Does your device run lollipo? if not, downgrade is available with nae and k3 then do the steps he says (flash the mdc, twrp, etc)
[Sprint Samsung Galaxy S 4 General] iamdofus:
Is it working with GSM/LTE?
[Sprint Samsung Galaxy S 4 General] deadspace05:
To everyone who want to try this don't bother.. it's a scam.. i tried it and i found out that they just changed the 3G symbol to 4G at status bar.. it's just cosmetic change.. it's says 4G but it's really just HSPA..
[Sprint Samsung Galaxy S 4 General] KipFL:
Gonna try this, will report success but once complete will I be able to use on ATT since it is a TM Rom?
[Sprint Samsung Galaxy S 4 General] deadspace05:
don't bother.. it's a scam.. especially the 4G part
[Sprint Samsung Galaxy S 4 General] davorsake:
No it isn't, it says 4g not 4g LTE. There's a difference in speed. HSPA is to the speed where they can call it 4g nowadays, but not 4g LTE.. Big difference.

I'm having a problem though. I got everything working and it works great!.. Most of the time. I'll randomly drop signal completely for no reason at all. Anyone else having this issue?
[Sprint Samsung Galaxy S 4 General] SpaceKebab:
If using the MK5 modem, domestically unlocked, can I upgrade to the more modern ones without losing the unlock? Is it even worth it?
[Sprint Samsung Galaxy S 4 General] isolutions-micronesia:
If you have android 5.0.1... you NEED to flash with stock m919 rom links in nfsmww's post to get android 4.4 ONLY THEN will SUU work. You can upgrade after if you wish.

I initially had 5.0.1 following nfsmww's instructions. Did not get the SUU working, could not flash with the other stock roms, except the M919. After the flash i verified that it downgraded from 5.0.1 to 4.4. Followed nfsmww's instructions, and got everything working. Even after upgrading back to 5.0.1.

Thank you [MENTION=5736471]nfsmww[/MENTION] You are awesome!
[Sprint Samsung Galaxy S 4 General] Mangodreads:
i tried this tutorial twice

first time it worked for 1 minute and then stopped working completely

second time-

this worked for 1 minute 45 seconds

Stopped working for 1 minute

works again for 1 minute 45 seconds

stops working again 1 minute

starts working for 1 minute 45 seconds

--- after 20 minutes its permanently stopped working ---- no signal at all.

why would it do this in intervals?

how can i fix it?

Please help me fix it --- I will donate and make a user friendly video tutorial on unlocking 720T using this method saying to please donate to mujtabaalsaegh@gmail.com if this helps you.

i am on stock android 4.4.2 boa3 using modem mk5.

I followed this tutorial verbatim
[Sprint Samsung Galaxy S 4 General] GalaxyVibe:
Thank you! This works great!
[Sprint Samsung Galaxy S 4 General] isolutions-micronesia:
Did you try upgrading to 5.x.x?
[Sprint Samsung Galaxy S 4 General] SpaceKebab:
Isn't the l720T incapable of AT&Ts 4G LTE? I'm running an I337 rom (team octos MM daily, if it matters) with my MK5 for the domestic unlock. I usually force the phone into cdma/gsm mode but forgot to after my latest wipe/upgrade and it's been showing LTE on my status bar with an avg of 3 bars. Speed test shows double/triple speeds. How is this possible?
[Sprint Samsung Galaxy S 4 General] yash1331:
so basically, if i want to use 4g lte sims, i will have to flash a custom rom else 4g lte sim won't work on stock rooted rom>?
[Sprint Samsung Galaxy S 4 General] yurividal:
After i do this, can i update to any Lollipop custom ROM? Need to be JFLTETMO rom? Thanks guys
[Sprint Samsung Galaxy S 4 General] Mr Hassan:
i have l720t, and its in invilad sim,,,,

i already unlock via BOX but still, its need via GCF, but i never find this option UE SETTING INFO
[Sprint Samsung Galaxy S 4 General] Hamza khan2014:
I have ok3 modem can i try this whole process to unlock sim?
[Sprint Samsung Galaxy S 4 General] Ameli4:
Hello. And how to return the default values after the change?
[Sprint Samsung Galaxy S 4 General] wildpig1234:
So you have to install m919 rom or else you only get HSPDA+ and not 4G LTE? i was hoping to not have to install the rom so not to completely wipe my phone.... ;(

Also, M919 rom is that like a tmobile only rom? would this disable the ability of the phone to use cdma?
[Sprint Samsung Galaxy S 4 General] wildpig1234:
Anyone can help me out with my question? that rom is for tmobile but you are still able flash it onto a sprint phone? does it after the cdma afterward?
[Sprint Samsung Galaxy S 4 General] dfw123:
Hello! thanks for your posting. It helps, but the twrp is image file not tar file? Where can I download twrp.tar for samsung g4 SPHL720T ? Thanks.
[Sprint Samsung Galaxy S 4 General] bilgerryan:
From their website https://twrp.me
[Sprint Samsung Galaxy S 4 General] dfw123:
I checked their website before but 2.8.7 version only img file no tar. Can I use 3.1.1 version tar file? Thx.

https://dl.twrp.me/jfltespr/twrp-2.8.7.0-jfltespr.img
[Sprint Samsung Galaxy S 4 General] dfw123:
I searched but no SPHL720T clockworkmod for rom manager. Where can I download it? Thx.
[Sprint Samsung Galaxy S 4 General] bilgerryan:
TWRP is the only choice, https://twrp.me, use the one for the L720.
[Sprint Samsung Galaxy S 4 General] Danny1976:
Just completed the steps and everything is working fine. The issue came up, when I rebooted the cell and it got stuck on the T-Mobile 4G LTE bootlogo. I thought it was the SuperSu binaries update, so I wiped dalvik, cache, data, system and re-flashed the rom. After setting everything up and downloading google updates, when I rebooted the same thing happened. If I reflash the rom without wiping, it still gets stuck on the bootlogo. Any idea on whats causing it?
[Sprint Samsung Galaxy S 4 General] Danny1976:
Phone works fine, but as soon as something updates it will get stuck on bootlogo. I dont know if its the play store, but something is causing this rom to not boot. I like this rom, because it has all the T-Mobile stuff and works with the T-Mobile sim card.
[Sprint Samsung Galaxy S 4 General] bilgerryan:
Since it's getting stuck at the boot animation (or the splash screen?), it wouldn't be the Play Store or any other app. I would try re-downloading the ROM.
[Sprint Samsung Galaxy S 4 General] Danny1976:
I went ahead and used the muniz's OD2 Lollipop ROM and it's running great. T-Mobile service are all working. Thanks for the reply.
[Sprint Samsung Galaxy S 4 General] Snapi2:
[MENTION=7856486]Danny[/MENTION]

not sure anyone is still posting here... wanted to ask about your muniz lolipop rom, if it's still running smooth on your S4?

does it give you Tmob w/4g or just 3g? Are you happy with the connection speeds? I was going to try the M919 rom as the op suggests but I'm curious to hear more about the muniz rom. I may try it on metropcs. Thanks!
[Sprint Samsung Galaxy S 4 General] bilgerryan:
If that ROM works, there should be no reason you can't use mine if you want. I just couldn't remember what worked and what didn't. Didn't want to tell you the wrong thing.
[Sprint Samsung Galaxy S 4 General] Snapi2:
Thanks! that's very good news!! I really liked your Wicked Rom, however I was leaning towards the M919 Rom because from reading this thread it seems the Tmob/M919 can help me regain a 4G connection,(at least have a shot at it), just don't understand how. Being that I have such limited experience just flashing 2 Roms, a modem & twrp...

> I would ask you if this M919 rom has the ability to change band/modem settings and how your Wicked rom compares..?

> or should I install the M919 Rom first, (hopefully gaining 4G) then do a twrp wipe and install your Wicked 10.9 after that, (making a twrp backup of course)??

> also would it be possible or necessary to flash MDC modem after installing Wicked?

Sorry if these are silly questions but this is definitely rocket science to me!! I can't say thank you enough for sharing all your knowledge & talents.
[Sprint Samsung Galaxy S 4 General] bilgerryan:
Those are all questions that I unfortunately don't have the answer to. Sounds like you have a plan.
[Sprint Samsung Galaxy S 4 General] Snapi2:
Ok, no problem. Going to take the M919 rom for a spin around the block, probably do that later tonight. If all goes well then I will play guinea pig and test out the Wicked. I'm guessing the sprint rom I have is not as friendly for a Tmob/metro user. I will let you know how it all works out.
[Sprint Samsung Galaxy S 4 General] Danny1976:
Don't have that phone anymore. But the muniz lollipop rom worked great. I went with the muniz rom because it was lollipop. I am not sure if it was 3g or not, but the data was working.
[Sprint Samsung Galaxy S 4 General] Snapi2:
I'm happy to say M919 rom is running smooth, booted right up first try with 4G and text bug of not receiving pics is resolved. This phone now looks & feels like my old Tmob/metro phone and that's kinda amazing to me. Many thanks to op-NFSMWW. :good: :D

As far as trying other roms, I will let this m919 run for a while before I jump to any non-stock roms.

The next thing I would like is to kill any ota-updates, if anyone knows of a quick fix for that.. would like to hear from you. Thanks!
[Sprint Samsung Galaxy S 4 General] bilgerryan:
Sweet. Long click on the notification, hit App Info, uncheck notifications (Play Store notifications will not be affected).
[Sprint Samsung Galaxy S 4 General] Snapi2:
Thanks, will try that just as soon as I see it pop up. Would that stop updates permanently? Trying to keep it from upgrading so there's no chance of it re-locking. Not sure but I think an ota/lolipop would be a problem. Keeping wifi turned off.
[Sprint Samsung Galaxy S 4 General] bilgerryan:
Is it trying to update automatically? If not, that should solve your problem. If it is, search for an apk called fotakill.apk.
[Sprint Samsung Galaxy S 4 General] Snapi2:
No it's not doing anything now, just wanna stop crap happening overnight so I don't wake up to a locked phone. Will definitely check out fotakill, thanks. Will that also help me to debloat? battery life is not so great.
[Sprint Samsung Galaxy S 4 General] bilgerryan:
Try ROM Toolbox Lite. One of my favorite apps. Make a nandroid backup before attempting to debloat, some apps are linked and can cause problems if you remove them. Also wipe dalvik cache in recovery after removing system apps. Pretty sure this device doesn't have automatic updates, my LG phones definitely did.