yashsingh1/xdaforums huggingface dataset:
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
Did you get it unlocked? If so, what method and modem was used?

Or do you still need the MK5 modem? If so, I think I still have a copy.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] thedeceivingeye1:
Still needed the MK5 modem. Impossible without it because the only unlock procedure ever done on the L720T I assume was for MK5. Still got Nougat/Marshmallow working, though, and ended up not liking it/them because of heat and battery issues despite my efforts. Needed some tweaking to get signal working, but after that, the signal worked out of the box every other install. (specifically, the JDC Nougat rom) The only thing that didn't work was trying to install one of the rooted stock TouchWiz roms, ex. NG2 stock rom without it's corresponding modem; wifi never worked.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
We're you able to obtain the mk5 modem?
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] thedeceivingeye1:
Yes, a while ago actually. I used one of those popular domestic unlock threads.

One lesson that I learned: if it keeps saying 'android.phone has stopped,' just do the steps until PREF_MODE_SET, and set it to GSM/WCDMA and reboot. Then do the other steps and it works on any other ROM unless the modem is reflashed.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] thedeceivingeye1:
[Double post]
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bilgerryan:
Lol, there is no delete button.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
Ok. Just wanted to be sure you got it. Best wishes.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] thedeceivingeye1:
Gotcha
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
deleted
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
OK so, i was having errors, so I reglashed PL1 stock using ODIN. It fixed all my errors and sporadic reboot. I then tried to root using b the TWRP method.

I successfully flashed TWRP 3.1.1-0, but when I exit TWRP and tell TWRP to root my phone and install supersu, it goes through the motions and reboots but i don't have root.

Wondering if a may have taken new security policy that's stopping it.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
Tried and tried to root PL1 with TWRP 3.1.1-0, but never worked.

Finally had to root with CF-AUTO-ROOT which put syock recovery back, the used ODIN to put TWRP back on again.

Got root. Opened supersu and installed binaries using normal method, because twrp method wouldn't work.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
Is because I already downloaded supersu from the app store and had it installed before root. Would that stop supersu from being able to install supersu over top of existing supersu app even though binaries had not been previously installed, because i doesn't have root when i early instslled supersu from app store?
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bilgerryan:
Yes, you have to install SuperSU after being rooted, then update binaries in the SuperSU app after installation.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] VinceIsBoss:
Have you opened up your phone before?

I had an issue when I opened mine up to replace the charging port(essentially a port and a flex cable) and I didn't flush it close enough so the processor wasn't touching the white cooling pad.

That could be it make sure it is providing contact.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
?? Did you post in the wrong thread?
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] ivanmara:
Hello. What is the current working way for unlocking?
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
Everything that has been reported in this thread on the topic of unlocking is condensed in the unlock section in post 1
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
[MENTION=4310299]bilgerryan[/MENTION]

Have yu seen the pm i sent you.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] icoe:
Custom roms for gsm-enabled SPH-L720T???

Hi. Firstly, I am a total newbie at this, so please speak to me like a baby. ;)

I have an unlocked, rooted SPH-L720T that I am now using on Mintsim, which uses the T-mobile network (GSM). I am looking to install a custom rom, mainly to get away from Sprint and all the bloatware. Other things I'd like: better battery, customization, improved performance, and bonus points for coolness factor. I was looking at something like Resurrection Remix. However, when I found an SPH-L720 version of RR and tried to install it, I get an error that says the file is bad. Not sure if this is the case, or if the problem is that I am trying to run a Sprint-flavored rom on a phone that seems to think it is T-mobile. Is this an issue, and is there any way around it?

Please recommend any roms that will work for a GSM SPH-L720T. Also, is there anything special I need to do in order to make them work? I've hunted around the internet and can't seem to find anything about this.

I have: TWRP, OK3

Thanks so much for your help!
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
Recommend reading post 1 both the Introduction and ROMS section. Might want to take a look at Wicked X in the ROMs section.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bilgerryan:
https://xdaforums.com/showthread.php?p=67726111
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] XDA-Survivor:
Installed Lineage on my SPH-L720T

Hello guys,

For those who are interested to update their phones (or were lost on multiple pages of this threads :p ). I have successfully installed latest LineageOS 14.1 on my phone. Mine were Lollipop 5.0.1.

Here what I've done:

1- Rooted it (I used Kingo, didn't work first time, but after many tries it worked)

2- Installed TWRP and flashed custom recovery (I took latest version for the SPH-L720T, IMG version)

3- Downloaded Lineage 14.1 and GAapps and put them on my SDcard.

4- After Iv'e watched some Youtube videos, I opened the Zip of the LineageOS (about 300Mb) then META-INF > com > google > android > updater-script and edited the file wih notepad++ and I deleted from the first line (assert (getprop) ) to ( "ro.product.device") + ".");); ) , then saved the file.

5- After this, I ran a normal installation of the custom ROM, with success.

6- Once phone booted, I go to "About device" and found Andoid 7.1.2 and device model "GT-I9505" (I will put a screenshot if you ask me).

7- Oh yes, the tethering, access point work normally, the data mobile option is shown but I don't know if it works.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
I accidentally ticked the wipe nand box in odin and flashed. When I finished, I could no longer boot past the Sprint spark screen.

After this point, I always received "can't mount data partition" messages when I used odin or even tried to flash a full restore backup with twrp. I could not successfully flash anything using any program.

I read all over net on various forums including xda, and everyone said it's bricked and posted no solution. I kept searching and discovered youtube videos on how to fix this partition issue using repair options buried in twrp. ([youtube]X7yDPszoQ5s[/youtube])

It turned out to be real easy to fix, thanks to TWRP repair data partition options. ☺
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
All, I fixed my many typos...read this post again, it should make sense now. ☺
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
Added link to last post in case it can help someone.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
Merry Christmas and a Happy New Year!.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] LestatAlmighty:
I being a complete noob when it comes to flashing anything, would like to know if someone can dumb down this process and maybe help me personally. All this information is completely overwhelming and I don't want to mess anything up. Thanks in advance.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bilgerryan:
Download TWRP tar from https://twrp.me. Download desired ROM and place on SD. Use Odin to flash TWRP tar on PC. Reboot into recovery. Flash ROM.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] spotcastr:
SPH-L720T Debrick.img

I inherited a hard bricked SPH-L720T. No power-on or USB Odin. Looked for SPH-L720T_debrick.img to attempt to bring it back and couldn't find one anywhere. But I have a clean working L720T (kernel version L720TVPSCPL1 and base band MK5); so was able to make one with the following steps to write to a 16GB SD card:

1. Root with CF-Auto-Root-jflterefreshspr-jflterefreshspr-sphl720t. This tripped KNOX. A downgrade to MK5 might prevent KNOX trip, but might brick phone; or perhaps use Magisk and MagiskHide might not?

2. Install Terminal Emulator and open a terminal window:

su

dd if=/dev/block/mmcblk0 of=/sdcard/debrick.img bs=4096 count=50000

exit

The phones internal SD card was FAT32 format with pre-existing directories and files. No files were overwritten.

3. Copy debrick.img file to Windows 7 x64.

Wrote the file to a freshly formatted FAT32 16GB Class 10 U1 SD card with Win32DiskImager app. Win32DiskImager does raw block writes and will eliminate any file system on selected target, so choose target carefully.

4. Put the 16GB SD card into bricked L720T and power it on.

Previously bricked L720T booted to OK3 kernel with all data present....woo hoo!

Get it on dropbox for now., or PM me.

https://www.dropbox.com/sh/nx8r1wpag3rpghs/AAAtxMQ8wvExhTMSqBX_z-6Ka?dl=0

If you need this debrick.img, start at step 3. If someone asks for an image for a specific phone, do steps 1 to 3 and post the file.

Most of this has been discussed in some form or another on other forums. It seems to work if you have a rooted and working phone to generate the img and can raw write the image to SD card.

I also need the 16GB SPH-L720_debrick.img from a recent firmware version to attempt to resurrect some boards I've inherited. Haven't been able to find one. If you make one, or can point me where to get it, I'll give it a shot. There are lots of GS3 images.... not many GS4 images it seems.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] dfw123:
Hello! like to ask if unlocked SphL720T can it flash M919 rom? where can I download it? Thanks
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bilgerryan:
https://xdaforums.com/showthread.php?p=62563410
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] ChrisR1:
Looking for basic rooted, debloated, stock PL1

Hi all,

I am looking for a stock, rooted, debloated ROM based on PL1 (last stock ROM) for the L720T.

I have tried OctOS, but I loose too many functions as it recognizes it as L720. (loose int'l roaming, wi-fi calling, voicemail, and others)

I have spent dozens of hours looking all over, and before you send me back to Post #1, keep in mind that this post was created in the beginning of 2014, and updated late 2017. I have no idea what is updated and what is original. I have been down several rabbit holes on that post that lead me to 2014/2015 info and files. I don't want to go back to 4.xx.xx due to app compatibility, and I can only find stock rooted ROMs for 4.xx.xx.

I would be happy to install a custom ROM that is stable, simple, and takes up minimal room, but it needs to make the L720T fully cabable (spark, int'l roaming, wi-fi calling, etc) like my phone was when it was 5.1.0.

If nobody can reccomend something, is there a way to debloat a stock 5.1.0?

Thank you for any advice.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] dfw123:
Thank you. I follow it and got my SPHL720T Tmobile 4GLTE work. The firmware is android 4.3. Can I upgrade to 4.4.4 M919UVUFOK3?
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bilgerryan:
No idea
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] Clipless:
Correction: I have surfed and talked on my Sprint Galaxy S4 SPH L720T before. It's real. Believe.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] :
L720T cant unlock it...

Hey guys, I am very close to unlocking this phone but I just cant get it there..

I rooted using the cf auto root for L720T, and i downgraded modem to MK5. Looking at my "About Device" screen it shows Software version AND Baseband to be: L720TVPUAMK5, Android version still shows 5.0.1.

I installed the SSU app, but every time I try to run it the phone says it has "Unfortunately stopped working".

I was told that Android 5 cant run the SSU app, so I have been trying to install Android 4. However I have bricked my device somehow. I cant even flash a stock firmware, Odin gives a fail everytime I try. Looks like I will be chucking this S4 into the trash. What a nightmare this has been.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
surf and talk

On other phones, I have proven that it is the sim/network that determines whether the phone is capable of simultaneous surf and talk. ATT sim which will switch you to the ATT network, will allow the phone to surf and talk. Same with a Verizon sim/network. The sprint sim/network does not support this.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
Try watching the video in post 3691. The partition repair options mentioned in the video may be of assistance to you.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] Clipless:
Rolling back your device from 5 to 4 was a bad idea. It may not be what bricked it but Custom ROMmers avoid rolling back.

I surf and talked on Sprint before I put a SIM in my phone. Not sure if this can effect surf and talk capabilities.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
**deleted and corrected in next post**
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
It is impossible to surf and talk on cellular (Sprint) signal before inserting a sim card, because you cannot have a cellular signal/sprint until you have a sim card installed and activate the service for the card with sprint.

Here is how you did it:

You were connected to wifi with no sim card. Whatever you were using for voice was using wifi, and your surfing was also using wifi. Everything was using wifi, not sprint/cellular.

Once you have a sprint sim installed and activated, you can only surf and talk when connected to wifi. The device will use your wifi for surfing and your cellular for phone call. If you do not have a wifi connection, you cannot use cellular for simultaneous phone call and surfing on sprint sim/network.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
**deleted**
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] satpakCA:
L720-T Version -- No WiFi after Domestic/Intrnl SIM Unlock & NG5 Baseband

I'm unable to get WiFi after Domestic/Intrnl SIM Unlock & NG5 Baseband on my Sprint L720-T version phone.

Sequence of events:

Initially phone was locked with Bootloader and Baseband all set to PL1 = 5.0.1. I was completely new to this world of unlocking/rooting android systems. I did Step 1 having no clue what I was trying to do.

Step 1: Installed something using CF-ROOT method described in the first page. :D

Step 2: Installed Stock Rooted NG5 Rom (Downloaded from here: https://xdaforums.com/galaxy-s4-spr...roots-roms-t3049810/post59310363#post59310363)

As mentioned followed the two steps: Flash Rom and Flash Modem.

Somewhere after between these steps, I completed both Domestic and International SIM Unlock. I'm using an Indian Telecom Operator (Airtel) SIM here in the US. It usually picks up either AT&T or T-Mobile HSPA/3G.

Domestic Unlock : https://xdaforums.com/sprint-galaxy...ock-sprint-t2928250/post56486609#post56486609

International Unlock : https://xdaforums.com/galaxy-s4-sprint/general/info-sprint-galaxy-s4-sim-unlock-sph-t3144530 (OP suggests everything with NG2, but I was able to do the same with NG5). All good.

Step 3: Tried to fix WiFi.

Note: The Folder Odin_NG5modem.zip contains only one file, modem.bin. Nowhere I could find the WiFi fix: NON_HLOS.bin file.

"modems will be in the extra folder named with the firmware build along with stock boot.img, recovery and the NON_HLOS.bin(wifi fix)"

Sorry, but I could only find one file named: nk1_extras.zip which did contain the NON-HLOS.bin file and tried to Odin it, but it still did not fix the WiFi issue.

Please let me know what to do. :crying:
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
Surf and Talk

[MENTION=9329634]Clipless[/MENTION] [MENTION=5043776]DroidJer[/MENTION]
[MENTION=4310299]bilgerryan[/MENTION]

Spoke to a knowledgable Sprint representative yesterday. He advised me that Sprint is rolling out simultaneous cellular Talk and Surf capability sometime this month (September 2018), but he did not know where the pilot is going to be, or how long it would take to get to my area. He said they are using VOIP technology to add this dual simultaneous cellular capability to their subscribers, and that it is a different method than what is used by AT&T and Verizon.

It is called Sprint Plus and its only available to android initially, and in select areas. My understanding is this software fix/enhancement is being pushed only to Galaxy S8 and newer devices initially.

https://www.sprint.com/en/support/solutions/services/faqs-about-calling-plus.html

I am just glad Surf and Talk is on their radar :)
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] kostic2006:
Hello guys, could you point me to the best alternative ROM for L720T, I am looking for something fresh like Oreo or MM. Does difference with L720 is a key here?

I also have i545 S4 but sick and tired by locked bootloader...
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] dfw123:
Hello! My samsung S4 is unlocked and working with Tmobile. but the wireless calling does not work any modification or mod for this? Thanks.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] speedchase151:
Can't web browse while on a call data and phone

Hello I have a s4 sph-l720 running CyanogenMod ver 11-20160815 and it works . I can be on internet and phone call at the same time.

Have many other s4 sph-l720 that i have been installing Lineage ver. 14 15 16.0 ver 6 and it will not do both at the same time

any ideas how to get it to work

thank you for your time

Speed
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
Simultaneous internet and voice

[MENTION=8978797]speedchase151[/MENTION]

Read post 3707 and 3710
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
Added SURFING WHILE TALKING section to OP, and changed red Note at beginning of OP.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] droneboy:
Any known RELIABLE root methods for PL1?
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] droneboy:
Nevermind. Was "perplexing", CF auto-root just wasn't doing it. Failed like 5 times... kinda odd...
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
In the OP/Post 1, the TWRP SUPERSU METHOD is confirmed to work on PL1.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] droneboy:
Yessir...that's what I ended up doing....thing is, CF has always worked flawlessly. CF was TWERPing it, but SU wouldn't stick...I guess. Anyway, zipped SU 2.82, all good.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] Clipless:
I KingoRooted my PL1 last year. CF AutoRoot mentioned in the first post of this thread may be a better method though:

https://xdaforums.com/showthread.php?t=2621862

Not sure if anyone is still using a S4 L720T like me but I was able to get the Oct-OS M [R3] working with full LTE, SMS and Call. At first I clean flashed Oct-OS M, then flashed GPApps, then MVNO Slayer APN. LTE would not work and the Cell Network "APN Names" was glitching in and out bad. I went back to TWRP, wiped, flashed "SprintS5_1_.zip" for APN configuration and it works flawlessly.

Message me if you want the files I have.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] droneboy:
Yes, SU is a lot lighter, and much better, my opinion...and you know what they say about kingroot...
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] Clipless:
KingRoot was a virus according to Windows 10. KingoRoot was pretty legit and I downloaded it from Google Play Store two years ago when I was in Japan in the summer. I think they are different apps. Not sure as I tried to use them years apart from each other.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
Pretty much any root tool is labeled as a virus in antivirus programs eventually when they get to it, because they view root tools as unsanctioned hacks to operating systems that create possible vulnerabilities. so Microsoft, Symantec, etc. catalog them and add them to the virus definitions as malware as soon as they can. Think about it. Microsoft doesn’t want someone making a root hack for their operating system tomorrow. Symantec doesn’t want somebody making a root hack for their software tomorrow, etc. They can’t sanction it and they fight it.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] dfw123:
Hello! I installed Lineage14.1 it shows as L720 I have unlocked SPHL720T will it still has Triband function? How to show SPHL720T? How to take screenshot from phone? This rom can not make call for tmobile. I call any number it just drop the call next second. I have tmobile APN set. How can I fix it? thanks.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
That thread is this thread. It is the same thread (Post 1). But thanks I will add Kingroot for PL1 to post 1.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
Added to post 1 (OP)
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] bgmg:
Perhaps I misunderstood your questions, please help me understand.

What I understand is:

1) You said post one doesn't mention NC6. I assure post one does mention NC6. Perhaps you have not read it since it was updated several weeks ago.

2) You are also wanting confirmation on a successful rooting method for NC6. In post one it says cf-root is confirmed on NC6.

3. You asked about teathering but one sentence later you stated that you read where wifi teather router works. Are you looking for another teather solution? If so, I can tell you that no other solution had been confirmed with certainty.

If I misunderstood, please explain.
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] eankk:
houstin we have root!!!!

WE have root on Galaxy S4 Tri-band running stock NC6....,

here is how you do it...

you need to "Flash philz_touch_5.18.2-jfltecan.tar.md5" in ODIN V1.85

then get "UPDATE-SuperSU-v1.94.zip" and put on SD card.

when you get done flashing Philz, reboot into recovery and "Install Zip" then go to the file you put that zip and hit install.

---------- Post added at 09:13 AM ---------- Previous post was at 08:30 AM ----------

here is the files you need to root SPH-l720T on NC6 https://www.dropbox.com/s/vuslwpu7vf4n039/Philz+odin+SU.zip
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] JerryGNYC:
Congrats. Just FYI, that version of Philz Touch is both pretty old, and for a non-Sprint variant of the720. You may want to update it, though I've no idea what will happen if you try to flash a ROM with it...
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] eankk:
O I did not know that. I was just trying to get root for the wifi only
[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] tempests:
I've been rooting and customizing since the first windows mobile phones. I always read first before posting. I have read the OP at least 3 times and it falls short on NC6. You did not misunderstand, you just read the OP differently than how I read it.

Here is how I read it:

1. The OP mentions NC6 but no valid proven solutions. The thread is riddled with Galaxy S3 info for a while then goes back to S4 Tri Band.

2. Sorry read it again. It does not confirm, only gives a rumor.

3. Tethering is not mentioned for NC6 but I'm sure it will work with the mentioned app.

I'm searching for more solid info and have been checking other threads. I'm guessing there is still alpha testing on the latest NC6 update. Once I have the correct answers, I'll test and post results here.