yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy Light Questions & Answers] dmahon:
It's strange - the T399N ROM has the files for VoLTE settings, etc. in system, so it seems to use the same basic source that would support it? But the version of the dialer on there doesn't give you any VoLTE options.

It's a bummer, because that was actually a useful feature... If there was any reasonable hope that the TMO Light would get KitKat I'd maybe flash back and wait, but deciding between calls that don't sound like I'm talking to a box full of crickets vs. battery that never dies (on KK) is tough...
[Samsung Galaxy Light Questions & Answers] josh2020glacier:
Forget that im just happy someone was smart enough to allow us tmobile user to have 4.4 kk on our phones

THANKS TO THE DEV THAT MADE THIS POSSIBLE
[Samsung Galaxy Light Questions & Answers] Edwith1d:
Some settings and contacts not working

I experienced this after a reboot. At first I noticed I could not add a ringtone from music, then tapping contacts resulted in the app not responding notification.

I noticed others have had a problem with contacts. I really like the speed improvement of the rom. Has there been a fix found for these issues?
[Samsung Galaxy Light Questions & Answers] Phantom707:
Does anyone know how to get Softcard/ISIS Wallet to work with this ROM? I honestly have tried multiple routes, including Root Cloak, Wanam, and the ISIS patch from the XDA forums, but none of them worked. I keep getting the message "We're having a problem connecting to your SIM card..."
[Samsung Galaxy Light Questions & Answers] disk@tek@:
Sevice Mode works?

Hey guys does the service code *#197328640# gives you the same black screen with no option on the screen as my t399 does on this rom?
[Samsung Galaxy Light Questions & Answers] tazmaniondvl:
What is that code for?
[Samsung Galaxy Light Questions & Answers] disk@tek@:
Service menu.

Anyway any other code does the same thing. Window pops up but everything is black. There are no options to choose.

I need to swith radio bands.
[Samsung Galaxy Light Questions & Answers] vindief:
that sounds familiar

say lil brother did you flash that rom and have that pin to unlock service provider? do you have a metro service or tmobile?
[Samsung Galaxy Light Questions & Answers] disk@tek@:
It was a t-mobile.

I flashed ROM months ago.

Unlocked with code this week.

Now I want to switch some bands off.

If somebody still has a stock ROM..

Can you confirm please that service codes do show the menu options?

Not just a black screen.

*#197328640# - service mode main menu.

Especially *#2263# - RF Band selection.

I think whether it's the ROM or the phone itself.
[Samsung Galaxy Light Questions & Answers] kissofdarknes:
For those wondering lightwave rom can be used on the t399n but as I found out even with reflashing the modem data is a little buggy
[Samsung Galaxy Light Questions & Answers] j2damill:
A suggestion for any t399

Great Job on the Lightwave rom, very smooth very stable, and big ups to the person who ported the kk t399n rom

i would like to add suggestion for any upcoming ideas for this phone, and that would be to add the bln.mod to any kernel thats being develop, since unfortunately Samsung didn't implement an LED for it, and GravityBox xposed doesn't work for touchwiz phones

http://xdaforums.com/showthread.php?t=823922 (the list of supported phones is outdated, works as long as the mod is implemented)

http://xdaforums.com/showthread.php?t=1342289

thank you, and again, props on the work, you've inspired more activity
[Samsung Galaxy Light Questions & Answers] tim1jr:
I have stock rom that is rooted and it pulls up service menu.
[Samsung Galaxy Light Questions & Answers] cryztal6:
New here and trying to use a metro pcs phone on tmobile

Hello,

I am new to this forum. I have a metropcs Samsung Galaxy Light phone that I want to use on T-mobile. I have rooted and installed super user. I am wondering how I can unlock the phone without buying the unlock code.

Do you think if I installed an image from a T399 onto a T399N if it would then allow me to use a T-Mobile SIM card?

Thanks!
[Samsung Galaxy Light Questions & Answers] congruent:
Arghh....Flashing the recovery and black screen

So I have the T-Mobile T399 and, from what I read, other people are putting the MetroPCS KK T399N on this phone. I did everything as instructed by this post: http://xdaforums.com/showpost.php?p=56059019&postcount=268 and after resetting my phone goes to a screen where the Samsung logo is partially loaded...then it freezes. I really have no idea how to fix this. I'm pretty sure I didn't corrupt any partitions. I did have the Lightwave rom installed on my phone before. I did a factory reset before attempting the KK install. Anyone have any ideas of what is wrong?

Alright. So that was caused by a dumb mistake on my part. Now my phone does not recognize my sim. KitKat works fine besides that. I followed the steps of flashing the TWRP recovery image and then flashing (install in TWRP) the zip file. I have a TMobile T399 that was unlocked and I've been using a Metropcs sim for service. It seems like it should work even better now with the default MPCS stuff. I've read and it seems like it as something to do with the radio, or modem? Unfortunately, I just can't figure it out from the limited amount of KitKat posts. If anyone can help that would be awesome.

Thanks!
[Samsung Galaxy Light Questions & Answers] congruent:
Works for me

Works for me. My sim card isn't recognized though.

[Edit] I mean't it works for me on the KitKat rom. I just saw that you said "stock." Oops.
[Samsung Galaxy Light Questions & Answers] Unjustified Dev:
Did you install the metropcs modem?
[Samsung Galaxy Light Questions & Answers] disk@tek@:
Thanks for checking it out. Looks like I have to reflash the ROM.
[Samsung Galaxy Light Questions & Answers] congruent:
Hmm. Now that I look at the files...I'm not sure. I'm not even sure what a modem is, to be honest. I followed these steps: http://xdaforums.com/showpost.php?p=56059019&postcount=268

So basically, I downloaded your "SGH-T399N_4.4.2_kernel.zip" and the TWRP backup. I factory reset my phone, installed the TWRP backup, and then installed the zip. After that was finished I was able to boot into KitKat, but my sim wasn't recognized at all. My phone still has its IMEI number, etc.

Thank you for looking into this!

[Edit]

So I just went through the whole process again. This time I flashed the stock firmware (the original MJA from ShabbyPenguin), upgraded to the latest firmware, and then attempted to root, but it wouldn't root on the latest firmware. So then I flashed back to MJA, rooted using this guide: twrp-2-7-1-0-touch-recovery-t2823555 and then went through the KitKat upgrade process hoping that something changed. I wasn't sure if I wiped the system partition before, so I made sure to add that. I wiped system, dalvik and cache before restoring the backup and installing the zip. Restarted and....nope! Sim card not detected. Blah.
[Samsung Galaxy Light Questions & Answers] Unjustified Dev:
What is your baseband when you install the kitkat rom is it detected?
[Samsung Galaxy Light Questions & Answers] congruent:
T399UVUAMJ4...the same as the Lightwave ROM that I had restored from a personal backup.

Last night I restored my own backup (Lightwave) and it gave me the same sim card issues. It stayed that way until I saw this post. I then restored the KitKat backup after wiping everything but the external sim, and installed the zip. Still the same sim card issue in KitKat and it had the above baseband.

Thanks!
[Samsung Galaxy Light Questions & Answers] Unjustified Dev:
Odin an official T-Mobile build. The latest one and see if it works. Keep your Sim out and install it after you've booted the official firmware you can grab it from sammobile
[Samsung Galaxy Light Questions & Answers] congruent:
So I downloaded the latest firmware:

Model: SGH-T399

Model name: GALAXY Light

Country: USA (T-Mobile)

Version: Android 4.2.2

Changelist: 2748916

Build date: Thu, 11 Sep 2014 10:57:15 +0000

Product Code: TMB

PDA: T399UVUANI2

CSC: T399TMBANI2

MODEM: T399UVUANI2​

and flashed it, then booted without the sim card. The problem is that it cannot be rooted (at least by the TWRP flash method). I can get the oldest firmware (MJ4) and flash that over this one, but doesn't that defeat the purpose? I'll try it anyways...without the sim card. I did see a firmware by [MENTION=345440]root[/MENTION]@ that I believe is newer and is prerooted, but the download constantly fails because the site is terrible. Here.

Model	Country/Carrier	Date	Version	PDA	CSC	Kies

SGH-T399	USA (T-Mobile)	2014 October	4.2.2	T399UVUANI2	T399TMBANI2

SGH-T399	USA (T-Mobile)	2014 July	4.2.2	T399UVUANG6	T399TMBANG6

SGH-T399	USA (T-Mobile)	2014 May	4.2.2	T399UVUANE4	T399TMBANE4

SGH-T399	USA (T-Mobile)	2014 April	4.2.2	T399UVUAMJ4	T399TMBAMJ4
[Samsung Galaxy Light Questions & Answers] congruent:
FINALLY.

Alright...Update.

My previous method for attempting to root the latest firmware (NI2) was to restore to stock MJ4 (no root), do the OTA update to NI2, and then attempt root. That didn't work, at least the two times that I tried. I'm not sure what's different, but this time, with the firmware from Sammobile, I was able to root afterwards.

And now....IT WORKS! (Just finished the process). Thanks a lot. Besides your suggestions, this time around I just wiped the system partition (no dalvik and cache).

So the entire process, for anyone that's having problems:

1. Flash newest firmware.

Backup your data to your external sd card. Take out your external sd card. Flash the newest firmware from Sammobile (T399UVUANI2) using Odin. Google Odin flashing instructions if you don't know how to do it. Do not go the MJ4 (or whatever previous firmware you have) -> OTA upgrade -> Root, route. I don't think it works. Boot into the new firmware. I went through the Google login process, but I'm guessing that's not necessary?

2. Flash TWRP/Obtain root

Flash TWRP to your phone: http://xdaforums.com/android/development/recovery-twrp-2-7-1-0-touch-recovery-t2823555 using Odin (linked above).

3. Get TWRP backup folder onto your external sd card.

I don't know of another way to do this (it seems unnecessarily difficult). Replace your external sd card. Boot into TWRP (vol. up+power+home). Then go to "backup" and choose your external sd card. Backup something small, not data! It's unnecessary. This creates the TWRP backup folder. Use the menu to power down your phone. When it asks if you want to install SuperSU, do it.

4. Place KitKat files on external sd card.

Go here on your PC: http://xdaforums.com/showpost.php?p=56059019&postcount=268 and download the two files (TWRP backup and kernel zip). Navigate to your external sd card on your pc and go to the TWRP/Backup/*some numbers here*/*a date and some letters here*/ folder. It's basically the last subfolder in the TWRP folder. Delete the backup files there and add the 4 TWRP KitKat backup files you downloaded from the link. You can place the zip file anywhere on the external sd, just remember where. You could do these file operations/downloads using Android, but it's kind of a hassle.

5. Restore KitKat Backup/Flash kernel zip

Boot into TWRP. Wipe the system partition ONLY (perhaps you can wipe the others, but I didn't). Restore the backup. Install the kernel zip file.

Thanks again Unjustified!
[Samsung Galaxy Light Questions & Answers] congruent:
Update:

I will say, after using KitKat several days I'm noticing some lag. It's a weird form of lag though. It's like the phone will just momentarily stick and then try to catch up. Perhaps it's just a different way of handling the hardware (not the best). It seems like KitKat is faster in other areas. It will scroll better, but then "stick." The sticking seems to be at a somewhat regular interval so I wonder about the stability of the method we're using. I'm doing a factory reset to see if it goes away.
[Samsung Galaxy Light Questions & Answers] GJSmith3rd:
I have noticed similar results with the metro pcs kk Rom. Sometimes it's seems very quick, especially after a reboot or initial install, then sometimes it's seems very slow with nearly 100 percent cpu, on all 4 cores, for no obvious reason. I thought it was too many apps installed with background processes or software bloat that was causing this. I use two apps to constantly monitor, visually, cpu and core utilizatIon. I almost wanted to go back to jb stock but decided to hang in with kk. Since i don't use this device with a carrier, only Wi-Fi, i don't have the radio problems many have reported, so metro pcs with root works well for me.
[Samsung Galaxy Light Questions & Answers] DroidJP:
I am thinking of rooting as I do not like how kikat treats the sd card. What is up with the sd card being read only? Most apps do not work well. Is there a workaround to enable full write to SD?
[Samsung Galaxy Light Questions & Answers] congruent:
Try a factory reset.

I did a factory reset and everything is working much better. KitKat is faster in certain things (I think). The keyboard doesn't have as much lag and the app switcher is a bit faster. Of course this could be due to having a fresh install. Touchwiz really downgrades the KitKat experience. It's so ugly/not functional. "Ok Google" functionality works awesomely well and the apps look better because the color bleeds into the transparent menu bar. Maybe I don't remember that feature in Jelly Bean?

Oh, I disabled the Samsung voice thing...I guess it can cause delays in app switching. You can also disable animations in the developer options menu which makes things a little snappier. I'm also using Greenify. I really think with those tweaks this rom is faster than JB.

---------- Post added at 05:57 AM ---------- Previous post was at 05:47 AM ----------

I haven't experienced this at all. I freely move files back and forth. I just moved Dolphin browser to the ext SD card. I regularly delete files in my file manager.
[Samsung Galaxy Light Questions & Answers] GJSmith3rd:
Things are much better as I've disabled many bloat apps. Google Now is working fine and I configured my home double tap to open it while using the Aviate launcher for organization. Aviate uses more memory and frequently reloads when returning to home but I like it's organization. Also running Wanam and Xposed. Running some performance and battery apps as well. Maybe I'll look into Greenify. I agree about the touchwiz performance issues....
[Samsung Galaxy Light Questions & Answers] DroidJP:
The problem isn't with the stock file manger. I use root explorer to access the files stored on the network, except I can't copy files directly to the SD. The only workaround is to copy to internal first and then use the stock manager to move it to SD. This will limit me to copy the amount of files at a time as the internal memory is smaller than SD. That is the issue I am having.
[Samsung Galaxy Light Questions & Answers] dubyah:
Thank you

Since new user, this referred to Q&A, but just wanted to shoot dev a hearty thanks for the ROM, downloading now.

Be nice if this device got it's own section, I mean it is a Samsung Galaxy.

Now that I think on it, I do have a question. Does anyone know if the multi-device ROMs will work? AOKP like PA or cyanogen ones?
[Samsung Galaxy Light Questions & Answers] DrewOnionA:
Downloaded zip, flashed with twrp. Cleared dalvik/cache/data. Booted fine over stock on bandbase T399UVUANI2. Also have gmail 5.0/lollipop calendar along with gmaps 9.0 working fine.

One ?, how to use multi window?
[Samsung Galaxy Light Questions & Answers] LegendaryDrakon:
usb and wifi tether

For those still developing Lightwave, i seem to have problems with usb tether and wifi hotspot. I cant share my internet with anything. In my phone it says that is enabled but in any console it will say that it has no intenet. Everything else besides that seems fine for the moment. i would download the KK but since it seems that it is still in development, i dont wanna take any risk until it is completly finish.
[Samsung Galaxy Light Questions & Answers] Unjustified Dev:
It's not in development it's an official release from another carrier. T-Mobile has yet to release the update which is shameful because MetroPCS version has kk and MetroPCS is technically owned by T-Mobile.
[Samsung Galaxy Light Questions & Answers] DrewOnionA:
Has anyone using the metro v'kitkat flashed a T399 radio ZIP to see if volte works? Saw in the forum it was not working for the T399.
[Samsung Galaxy Light Questions & Answers] josh2020glacier:
Post this here

http://xdaforums.com/showthread.php?t=2918432
[Samsung Galaxy Light Questions & Answers] Makivante:
Galaxy Light T399

Anyone have any luck getting Softcard (formerly ISIS) to work with the LightWave V3 rom?

I had it working with ISIS before they changed the name but now it seems it can never connect to my sim card.
[Samsung Galaxy Light Questions & Answers] tazmaniondvl:
Softcard when first started will say this device isn't supported. Due to it thinking this is a metropcs phone.
[Samsung Galaxy Light Questions & Answers] LegendaryDrakon:
Yeah, but what about lightwave without kk?? the 4.2.2??? Is that one being developed?? or is kk the only option to fix my usb tethering problems?
[Samsung Galaxy Light Questions & Answers] Unjustified Dev:
Usb tethering is disabled by both carriers only way to USB tether would be some app maybe or re-enable it which means decompiling the framework
[Samsung Galaxy Light Questions & Answers] Sami.iss:
If I have a TWRP recovery and SuperSU root download already

Please forgive this noob question, is it safe to download this ROM if I have these^ already downloaded (of course I have a sgh-t399 galaxy phone). I'm looking for a custom rom with cool features but this is probably the only one I found that supports sgh-t399.
[Samsung Galaxy Light Questions & Answers] Sami_iss:
**New account**

Respond here
[Samsung Galaxy Light Questions & Answers] Planterz:
Could it be because LightWave is rooted? If I try to load Isis (I haven't really updated anything since doing a factory reset), it says "This phone has been rooted. Isis is not supported."

EDIT: I updated Isis to SoftCard, and now it says "Softcard is not available on rooted phones." Perhaps Xposed/RootCloak could mask this, but I haven't reinstalled Xposed yet, and I'm streaming "The Wire" right now, and don't want to be rebooting over and over right now.

PdaNet is what I use to USB tether. You need the companion program installed on the computer (keep a copy on your phone to install it on other computers if need be). The really nice thing with PdaNet is you can "hide tether usage" and get unlimited tethering. I don't even have home internet anymore, I just use my phone. 150-250 GB/month typically.
[Samsung Galaxy Light Questions & Answers] Makivante:
I've never had the error about the phone not being supported.. I use RootCloak and it stopped the error about being rooted and let ISIS work perfectly, but now that they changed the name to Softcard and I'm starting to get a message about not being able to connect to my sim. Was just wondering if anyone else had this problem or if they might have a fix. I've tried reinstalling, wiping, and blocking shell for softcard but nothing seems to work.

Wish i was on 4.4 so i could just use google wallet. :crying:
[Samsung Galaxy Light Questions & Answers] Planterz:
I guess it could be a SIM card issue. When I wasn't rooted, I remember saying that Isis wasn't compatible with my SIM, likely because mine is a full sized SIM cut down to micro that I used on a Sensation 4G when I first switched to T-Mobile. I don't know why renaming/updating the app would cause this issue though.
[Samsung Galaxy Light Questions & Answers] tazmaniondvl:
My bad i thought it was for kitkat... which it does say its not supported
[Samsung Galaxy Light Questions & Answers] LegendaryDrakon:
Well, that is a shame but thanks for answering. Im using PDA but i would had preferred the usb tethering built in the phone and i dont think re-enabling it is gonna be any time soon. I will keep using PDA in the meantime and thanks agains for at least answering.
[Samsung Galaxy Light Questions & Answers] congruent:
I think I'm going back to Jelly Bean.

Every time I install the KitKat rom it almost becomes unusable in a few weeks. It starts out awesomely well...seems like it's even faster than Jelly Bean. But the performance slowly degrades. It doesn't matter what I do...what apps I close, etc. Only after a restart does it seem to get a little better, like you said. Maybe this is just an Android thing. I believe Jelly Bean also degraded over time and became really slow, but I don't remember it being this slow. I have to wait 3 or 4 seconds for the keyboard to popup sometimes. I don't think it's an app because I've checked using various resource monitors. Oh, and I'm also getting random restarts (which was actually happening much more frequently on the JB rom). Maybe the hardware is the issue? In your other post you mentioned the slow down in similar terms so I'm guessing something is messed up with the KitKat rom.

I'm getting pretty frustrated with the Android OS. I've never had an OS degrade over time like this. It happened to my last phone too. Degrades....restart. Seems better for a week....degrades. It's horrible. Maybe ART will help, but that really leaves older devices in the lurch. Android is just not consistent.
[Samsung Galaxy Light Questions & Answers] GJSmith3rd:
My KK Metro PCS based Rom is working just fine. After I disabled the bloat apps and uninstalled many apps, that had background processes, that I really didn't need or even use, the phone is smooth and snappy. The only time I experience freezing or lockup is while playing games that need a lot of memory.
[Samsung Galaxy Light Questions & Answers] Sami_iss:
LightwaveV3.tar.md5 - 905.9 MB or lightWave_ROM_v3.zip

Which file do I download on my phone and which one on my computer?

(Forgive my noob question)
[Samsung Galaxy Light Questions & Answers] Sami_iss:
Nvm figured it out, without getting a brick phone ~(^-^)~
[Samsung Galaxy Light Questions & Answers] josh2020glacier:
Yeah i actually used es file manager gave root permission so i can uninstall alot of the bloat ware. Bought a moga controlle from gamestop and play gta sandandreas....etc and love every second of this phone. Once we get a working cyanogenmod running it will open a whole new world of smoothness and stabilty to this phone but until then we make do with what we got :(

TEAM US!*
[Samsung Galaxy Light Questions & Answers] GJSmith3rd:
Thanks for the heads up on the Moga controller.
[Samsung Galaxy Light Questions & Answers] 13noninja:
Invalid file?

Been trying to flash lightwavev3.tar.md5 but odin keeps telling me the file is invalid. Can someone please help me?
[Samsung Galaxy Light Questions & Answers] DroidJP:
I received a system update from metropcs. It was 64mb download. Went ahead download the update. I can't seem to find any info about the update for this phone. So far I haven't notice any changes to kikat rom. Has anyone got this update as well?
[Samsung Galaxy Light Questions & Answers] mav361:
13noinja try redownloading the file again btw what version odin are u using?

---------- Post added at 03:41 AM ---------- Previous post was at 03:39 AM ----------

DroidJP are u unrooted?
[Samsung Galaxy Light Questions & Answers] sibsoner:
Help

Can someone please help me. I installed using odin onto my samsung light and now I have color dots floating around.

http://xdaforums.com/android/development/rom-lightwave-v1-t2825253

---------- Post added at 04:59 PM ---------- Previous post was at 04:12 PM ----------

Does anyone know why this would happen? I installed this rom using odin 3 and now I have android screen with floating dots.

http://xdaforums.com/android/development/rom-lightwave-v1-t2825253
[Samsung Galaxy Light Questions & Answers] DroidJP:
Yes, phone is unrooted
[Samsung Galaxy Light Questions & Answers] Last85:
Need some help here guys, i change my custom ROM for this one and now is requesting for a -PIN to unlock SIM service provider- and im without service.

Carrier: Metro pcs

Model: SGH-T399N

IMEI: 354796062511246 / 04

Thanks for the ROM, works really nice great work!!!