yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] GJSmith3rd:
Yep, not sure how much dev support will be done on this particular CM12 ROM. But if you just gotta have CM12 for now you can use a Google Voice number with Hangouts and the Hangouts dialer. This is how I make and receive calls on all my phones even ones without carriers and only wifi. Rings all phones at the same time if you like. I like the GV number because any time I change numbers or carriers I dont have to tell my contacts to update info. They all have the GV number so any changes do not affect my contacts. Of course you will need a mobile wifi hotspot in between access points. I got a free one from FreedomPop, 500mb free per month, plus I added data rollover for $3.99 per month. I only use it between AP's. Quirky but works well as a last resort.

Not sure about photos though. I always have 2 or 3 phones and a mobile AP with me so I don't miss that feature in this ROM build.
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] xiton:
I'm so desperate for this ROM to be fully working it's not funny. This phone is such an underdog waiting to be unleashed.

I also have an Android Wear watch that won't work with this phone because it's stuck on 4.2.2.

Super disappointing.
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] tbillings_100:
I was able to get the Gear working on this phone with stock Android. It was a pain. The only I have been able to get it to fully work was flashing the MetroPCS backup to it. Which in turn the downfall was after a while the phone begins to lag horribly.

Thank you dev for working on this CM port. You are doing an excellent job as everything is very stable (with the exception of Settings>Cellular networks>Network operators/carrier settings fcs.) Can't wait for the phone to actually work (hangouts as mentioned above works for now.) And everytime I boot I have to manually switch to LTE only (the only one that seems to work) by dialer *#*#4636#*#*) I'll be looking forward to connecting the Gear if Gear Manager ever supports ART. Also looking forward to Xposed framework to potentially supporting ART too (XPrivacy is a plus for me.)

This ROM is super smooth. If it weren't for me having 4 kids and Christmas and a birthday coming up, I would throw in a donation or two. Tax time I will kick in a few donations if the plans are to get this fully functional and maintained.
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] xiton:
Assuming the next release fixes these major bugs, I think it might be time for a new thread where the OP can be updated to focus on builds and testing!
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] josh2020glacier:
Hey dev just got a galxay light through metro also. So now i 2 light one for tmobile and one for metro. Let me know when u need testing not a prob for sure now
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] Unjustified Dev:
Calling audio is fixed now. Now I need to fix incoming calls your unable to answer them or hang them up. Also camera is not saving photos still , I hope I can get this fixed as well and release another build alternatively you can use mx camera for taking photos.
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] xiton:
You're amazing. Merry Christmas, Unjustified!
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] Planterz:
We need to start petitioning for our own forum for the Galaxy Light. There's several threads now, and they're scattered all over the place and hard for noobs to find. Put your vote in here:

http://xdaforums.com/showthread.php?t=1660354&page=334#post57755158
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] chapsushi:
Can you provide a download url for this latest build please?

I checked here and the latest build was 20141208 (I have 20141209). Thanks again for all your hard work!!
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] kabod:
When i last flashear version gives me no mistake because I got twrp complete recovery and my cell phone is the subway version
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] AkiroX:
He hasn't uploaded it. Sooo.. You have to wait.
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] chapsushi:
Yeah, I realized afterward that he mentioned he was still working on fixes before deploying a new build. :p
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] bichofelix:
Its on his account on goo.im in gardalte folder. It can call bit no calling audio/voice and you cant answer an incoming call.

Guy does good work.
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] chapsushi:
Thanks bicho!

Hell yeah, he does good work! I don't make phone calls anyway. :laugh:

Here's the url for anyone interested.

Update: Still can't get cellular data to work at all, even with this build. It's been quite frustrating because everyone else can get at least 3G. UGH.
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] Mattix724:
I'm excited to come across this thread and see the progress that you guys have made. I have the Galaxy Light from Metro and I hate the stock ROM with a passion. The stock ROM is a RAM hog!
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] tbillings_100:
Have you tried dialing *#*#4636#*#* and changing the radio band there? When I boot it's on 3G I have to manually change it to LTE only and that's the only LTE option that sticks for me.
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] chapsushi:
Well, the hard part is that I get no cellular data whatsoever, from boot. SIM not recognized. No Edge, no 3G, certainly no LTE. It's quite frustrating. I've dialed that sequence and it renders the special menu, but whenever I try to select any items I get a Force Close or my selections are unresponsive. I've tried to enable data via the standard connections settings, and those actions are unresponsive as well. I'm beginning to feel like I have an anomalous SGH-T399 here!
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] tbillings_100:
What version of the stock rom did you come from? And what are the steps you took when flashing this rom?

Nevermind that. I don't want to clog up this thread. I will explained the steps that I took:

I was coming from Stock rom T399UVUANI2 from Oct 2014.

1. Made Nandroid Backup of Boot, System, Data with TWRP

2. Wiped System, Cache, Dalvik, but not Data thinking I could flash without wiping Data.

3. I was wrong in step two. Gave me error msg about incompatible data while trying to flash.

4. Wiped System, Cache, Data, Dalvik.

5. Flashed CM 12 rom, gapps modular-micro 5.0, and latest supersu from chainfire (as i don't care for the superuser that comes with this one for some reason ;P)

6. Reboot

Restored my apps and data from nandroid backup using Nandroid Manager.

Once booted and worked, made Nandroid backup

A couple of times I had to wipe system cache data and dalvik and start over because I messed up with updating supersu at some point. At that time I kept getting errors with mounting the data partition, and permission errors with system. Tried fixing permissions, no avail. After trial and error, found that backing up media/data and sdcard to my PC, wiping everything, then reflashing the stock rom I was coming from (from sammobile) in Odin fixed the partition and permission errors. Reinstalled CM12 using steps above, and it worked. The only force close issue I have is with Apollo.

So if you had done a clean install of CM 12 (i.e. Backing up current rom, wipe system, data, cache, dalvik in twrp, then flashed cm 12 rom, gapps) and having issues with booting and/or SIM card, I wonder:

I had seen one of your other posts. If you had a custom rom with a custom kernel installed, try using the stock kernel from latest firmware mentioned above from sammobile. then doing a clean install of CM 12 again.

If that doesn't fix your problem with the SIM card issue, then try flashing the modem file from the latest stock firmware mentioned above.

Hope this helps!
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] chapsushi:
Hey, thanks for your detailed response! So, here goes:

Purchased the T-Mobile SGH-T399 outright, from eBay

Rooted immediately with a Odin-based ROM, 4.2.2, Baseband T399UVUAMJ4, kernel 3.4.39 shabbypenguin. All via CWM.

Installed Wanam Xposed 3.3.1 to clean up the UI and remove bloat

Made a backup with CWM.

Installed TWRP (advertised in this forum) via Flashify.

Made a new backup with TWRP. Ditched CWM.

Wiped System, Cache, Data, Dalvik.

I then flashed with the latest build from Unjustified Dev. Plus gapps (in sequence). No errors to note.

CM12 boot didn't recognize cellular network. Set up wifi without issue. Attempted to use dialer sequence and settings to enable mobile data. Nada.

So, a this point I think it does make sense to start from a new baseband ROM from sammobile, as you stated.. That sounds like the last step! I can't wait....
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] tbillings_100:
Might I advise to extract the tar.md5 file you download from sammobile with 7zip, don't worry about the errors, and flash the modem.bin file with Odin first, then reboot into CM12, and see if that fixes the data problem? If not then try flashing the entire tar.md5 file, do your wipe and install cm12. Make sure you flash the modem.bin under phone in odin, not pda.
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] chapsushi:
Sure. So, I've never heard of sammobile until now. Great site. I assume you mean to download the latest file?

I'm assuming that I should start out with CM12 (I've already reverted back to my 4.2.2 daily driver). Just wanted to reaffirm steps:

Extract the modem.bin and flash via Odin.

Reboot into CM12 and test for cellular data.

If unsuccessful, flash tar.md5 file via Odin (I didn't know md5 files could be flashed. Just thought they were a small checksum)

Wipe and reinstall CM12.

Lastly, this won't overwrite my TWRP to stock recovery, right? I need something to fall back on while CM12 gets enhancements and fixes.
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] tbillings_100:
You are correct on the steps. Remember to Press the phone button to add the modem.bin file in Odin, not the PDA button.

Yes. If you flash the entire stock firmware it will overwrite the TWRP recovery. I have one that suits me well that is Odin Flashable. Just make sure you you boot into the stock rom at least once before you flash it. If you have any problems with this file just add the .md5 extension to the end of the filename. Good luck!!
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] chapsushi:
Thank you sir. So, here's what I did:

Grabbed the latest October ROM from sammobile (as I linked above), and just went straight to flashing the full tar.md5, via the "Phone" option in Odin. It appeared to complete without error. But upon boot, was stuck on the T-Mobile logo for infinity. Crap.

Thought to myself: "Well, I've been wanting to try out [MENTION=345440]root[/MENTION]@'s Lightwave ROM. Why not? It will install TWRP (2.7.x) as well.

Flashed that via Odin and didn't really like what resulted. Everything that I needed was Force closing. Ah well, I have TWRP back.

Attempted to restore my "daily driver" via TWRP, but it came back without any cellular data. WTF?

Well, let's give CM12 another shot.

Flashed CM12 and gapps 5.0 in sequence (TWRP complained about the gapps file)

Rebooted in to GLORIOUS CM12 with LTE!

Enjoyed the beauty of Lollipop with full on 15/4 megabit on the go

Decided to mess about with the network settings and enable data roaming. That was a mistake. :(

All cellular connectivity gone. Kaput.

Used Flashify to upgrade TWRP to 2.8.1. from 2.7.x

Rinse and repeat. Here I am...hoping to not break data again.

As soon as I get this image dialed in, I'm going to back it up. Aw yeah.
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] tbillings_100:
Yeah. Data roaming in the current CM12 version for this phone is useless, for me anyways. I get outside of the network where AT&T usually pops on for roaming on the stock rom but I just lose signal with CM12. Switching providers through data settings breaks data for me. Soft reboots performed by apps also renders no signal for me as well until I do an actual "normal" reboot. I'm sorry you are not having much luck with the data. I think flashing the stock rom helped you out as far as CM12 is concerned. I hope you can get it working again!

By the way when you decide to flash the whole tar.md5 file, you need to do it via pda. phone is for the modem.bin file. That may be why you got stuck on boot...
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] chapsushi:
Ah thanks for that correction with regard to the Odin steps. As you stated, just the simple task of flashing the stock ROM (whether or not it booted to full functionality) was just enough to clean the slate for CM12, so to speak.

After dialing in a fresh CM12 flash with all of my desired configuration, I wasted no time creating a TWRP backup (16 minutes). This way, if I foolishly attempt to mess with the data settings again, I'll have a quick and easy recovery.

I am incredibly happy and excited to have this running. It's been my driver for the past 20 hours or so, and it's awesome. Hotspot with 4G LTE has been my dream for 6 months and now it's a reality. For now, I just have everyone call me via Google Voice/Hangouts. Works pretty well.

Combine this great Lollipop experience with T-Mobile's $30 unlimited SMS and Data plan, and I'm feeling like a King.

[MENTION=4911249]Unjustified Dev[/MENTION] and [MENTION=5801632]tbillings_100[/MENTION] and others in Q&A, Thank you so much for helping me get to this point.
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] tbillings_100:
You are welcome =) I am greatly excited and glad that you got it working! If you have issues with any hardware not working right, usually it's just change the setting you changed that broke it back to the original setting, and reboot. If you have issues with bluetooth breaking the sound (i.e. for me, if I play music through my car stereo with bluetooth, the phone speaker no longer plays sound until I reboot.) Any other issues, ask in here. One of us may have a resolution for you.
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] GJSmith3rd:
Interesting and informative discussions. The last time I tried the latest cm12 build I had problems with apps force closing, video apps and one of my favorite tools, Link2SD, wasn't ready for LP. Oh, forgot to mention the build was totally awesome and I tried to hang with it for a while. Any problems with FCs or video apps? Link2SD is LP ready now.
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] afr33sl4ve:
I feel dumb for posting this, however, it seems that the CM porting has gotten to a point where phone and data is working just fine. If that's the case, I'm gonna make a backup, and flash CM12 right now.

EDIT: I ask because I need a somewhat stable build that can have the GPS running for 10-14 hours non-stop.
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] chapsushi:
I have yet to experience a Force Close. Pretty remarkable. Youtube and camcorder work well; I haven't put them through rigorous feature testing though. MX Player and Video Player both play back captured 720p video as well.
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] GJSmith3rd:
Great, maybe I'll backup my MPCS-KK tonight and give it another run.
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] tbillings_100:
Folder Mount works great for me. The only probs I have with FCs is Apollo. Video works great. Bluetooth is a little tricky.

GPS kind of works. Some apps (like The Weather Channel) detects your location, but complains if you try to add your location because it thinks GPS is off. Technically I don't think GPS is 100% functional just yet. I've never tried Maps yet.

Phone isn't working. You can answer calls, but can't hear anything nor can anyone hear you. You can't dial out. And it won't hang up the call. Our bypass to this is using Google Voice with Hangouts or another app that supports calling over data.
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] afr33sl4ve:
Yeah, that won't work for me.

Thank you to all the devs working hard on this.
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] ncwmdsf:
I was successful flashing the CM12 and GAPPS 5.0, it seemed to work fantastic except the phone did not work? Any chance this will be fixed or has this project hit a wall? Happy to be a test pilot, just shoot me message and thank you for your hard work.
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] Unjustified Dev:
I'm awfully busy and only had time this week to work on one device. When I get a chance I will update builds for all my other devices and work on calling audio. I got calls to work but microphone broke.
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] DuvalBoy54:
Thanks unjust for cm12. Very stable, other than call issue. Nice work. Hope you will continue to maintain this rom.
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] leo321:
Just thought I would put all of the problems I've seen users posting into one post, so unjust and whoever else is collaborating on the project can see them.

Broken data roaming

[*]Broken in call audio That one is known

Sim not inserted error (which may be due to them using an old modem.bin)

No GPS

Halfway working orientation/accelerometer

We could use a kernel dev.

Other than that it seems this rom is pretty dang stable! I did have a strange occurrence last night watching youtube over wifi, The screen completely froze and became unresponsive, and then proceeded to display what appeared to be white noise/a grainy heavily distorted image.

It's been a long time for me since I've been into flashing roms, but if I could be of any assistance to any of you working on this just pm me!!! I'm not a coder, but I'm not a noob either.

Again, thanks for your hard work!!!
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] tazmaniondvl:
This phones battery is amazing on cm!!! Can't wait two see where this goes. I'm still on iPhone 5c unfortunately, would love to get this unlocked and use it for sprint
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] DuvalBoy54:
Has development for cm12 stopped??
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] tbillings_100:
No. Just not going very fast. All good things take time =) Thanks btw Dev!! You're doing gr8!!
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] DuvalBoy54:
Thanks for the update. Can't wait to see the next update.
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] msnuser111:
Not possible. This is a gsm phone sprint is cdma. Best case scenario would be data only on lte if the phone supported sprints lte frequencies (which i dont think it does).
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] tbillings_100:
Another issue

Tried several versions of Netflix. Stuck on loading app. no FC. After a while it says error connecting to netflix servers. -9 Please try again later.

Looking around for a fix. Anyone else have this issue?
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] GJSmith3rd:
Same for me. Had problems with Google Movies and TV as well. Had problems with some games too. I tried to hang with it but went back to MPCS-KK...
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] chapsushi:
[MENTION=3503764]leo321[/MENTION]:

Thanks for providing this logcat. Every little bit helps.
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] Unjustified Dev:
TWRP 2.8.4.0 released in preparation for new build

Builds and Changelog
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] chapsushi:
Thank you sir! To flash the upcoming CM12 build, is TWRP 2.8.4.0 required?
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] tbillings_100:
I would, since it increases compatibility and therefore reduces risks of errors during the CM12 update.

I've updated TWRP. It's a rather painless process. =)

Thanks Dev for the update! Looking forward to the new build! We appreciate your hard work!
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] chapsushi:
Cool, just upgraded TWRP via Flashify. Direct link to the 01/28/15 files (md5, img and zip) for the lazy.
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] bichofelix:
Flashing an IMG directly in twrp is a pretty cool update.
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] morkymouse:
Thanks for all your hard work on the CM12 build Unjustified Dev! Looking forward to the new build and calling audio fixed, can't wait!
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] Blazerx39:
Thanks for the rom, looking forward to it greatly, I've seen your work and used it on many other devices, youre an awesome dev!
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] DuvalBoy54:
OK. December and January and half of February has come and gone, and still no progress on this?? Did unjust just vanish?
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] Planterz:
This kind of thing doesn't happen overnight. People have lives and jobs outside of hobbiest programming. Be patient. One surefire way of discouraging developers is to pester them about updates. I mean, you surely have a spouse/significant other/parent/child/boss/subordinate that pesters you about something? Does the pestering motivate you, or does it have the opposite effect? It'll happen when it happens, and if it never happens, it's a bummer, but such is life.
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] DuvalBoy54:
I wasn't asking for ETA or such. Thanks for explaining this though.
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] chapsushi:
I think, among adults, it is perfectly acceptable to ask for an ETA. It is not considered pestering.
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] tbillings_100:
True. But it's in the matter of wording. To some it would sound like pestering.
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] DuvalBoy54:
I didn't ask for eta, wasn't going to. I'm sure at some point we will get cm 12 at some point. I got an LG l70. I'll get that up and running, and run cm12 on it for now.

I didn't mean to offend anyone. I've been rooting and roming Android since cupcake.
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] xiton:
I know everyone hates an ETA post, but lets be real. When people stop talking and no releases happen, it scares everyone. I've now moved on to another phone, but this phone sucks without a Touchwiz-free build, and Unjustified is literally our only hope. A lot rests on his shoulders, especially since [MENTION=345440]root[/MENTION]@ vanished.

Try not to punish people just because they are so passionate about this phone and its software!
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] KageBeast:
Well people gotta realize that these devs can't put all of their time into their projects. Life sometimes gets in the way and you just gotta put things on hold. Also this phone doesn't suck at all. Touchwiz doesn't make the phone bad. It's a good phone for the price.
[Samsung Galaxy Light ROMs, Kernels, Recoveries, & ] tbillings_100:
I agree. Touchwiz doesn't make the phone bad. The bloatware does. If you can remove the bloatware (I did,) the phone is actually decent. CM makes the phone run smoother IMO. Again, great things take time. I imagine the call audio issue is a very difficult thing to figure out, especially when you are working on more popular roms for other "better known" devices. If you think a few ppl for the Galaxy Light are asking for ETAs, think of how many more people with more popular devices, what they are doing.....It can be stressful. I know, broken call audio sucks, but I am patient. Hangouts is keeping me that way. And keeps me from being bugged by solicitors and ppl who are trying to get a hold of the person who had my t-mobile number before I did, lmao. :cool: