yashsingh1/xdaforums huggingface dataset:
[T-Mobile, Samsung Galaxy SIII] machhho:
what is the best modem for the best overall coverage and signal and if possible the link for the flashable zip .

I have the jellybean 4.1.2 installed

thanks in advance
[T-Mobile, Samsung Galaxy SIII] Perseus:
Did you happen to read OP at all ? Do you think the modem with best coverage in New York will be the Best for LA ? On the map linkedi in OP you can enter your own address and it will tell you modems reported in your area.
[T-Mobile, Samsung Galaxy SIII] DocHoliday77:
Most roms are built from the latest T999 build available, which is currently UVDMD5.

UVDMD5 refers to the firmware build version in its entirety, not just the modem. When a Rom says it was based on MD5, it just means it's a modified version of that O/S.

Imo, no Rom should ever include a modem. If you know one does you should mention it to the dev, or pm me and I can discuss it with them instead.

If you have a T999L, you can only use the modems from the T999L and T999N. If you flash the T999 modems, you will simply have no signal or service at all. The same goes for the T999. You can only use T999 modems for a T999. As long as you remain within these requirements, it does not matter what Rom you use, you can use any modem you choose. So yes an LG1 or LJA modem will work on a MD5 Rom, if you have a T999.

This should all be covered in the OP. Please read it in its entirety.
[T-Mobile, Samsung Galaxy SIII] henslo:
Have a question. My mom has a SGH-I747 but using a T-mobile sim card. I have tried flashing a T999 radio to it, but just results in no signal at all. But read a thread on their forums saying i could use QPST and a NV backup of the T999L and it enables the 1700mhz band on the 747. Tried it works until a reboot then goes back. I did a NV backup in terminal after restoring the T999l NV. And somehow it still loses and goes back to edge 2G signal without reboot. Just wondering if there was combination of maybe ROM/Modem and the NV backup to make it stick? I'm aware that flashing different Roms could possibly end up in a brick, but with my Galaxy S2 was easy to flash AT&t modems/roms and vice versa. Thanks for any help http://xdaforums.com/showthread.php?t=2344627 This is the thread i used.
[T-Mobile, Samsung Galaxy SIII] DocHoliday77:
Honestly, you'd have to ask the guys over there. I don't think they ever figured it out and I'm guessing it probably won't happen, as its either just not possible, or anyone who has interest in developing it further will probably upgrade to a newer device soon if they haven't already.

I could be wrong, so like I said, you'd just have to ask in that thread. I understand the theory behind it, but I have no way, or reason to mess with it since I don't have their device. I should also point out that it may not be a good idea to go messing around with it like that. If it were permanent, maybe, but reflashing the wrong NV data at every reboot just doesn't seem like good practice to me.
[T-Mobile, Samsung Galaxy SIII] henslo:
Thanks, I'll ask in that thread. Doesn't seem like good practice to me either to keep flashing or restoring the wrong nv. Wouldn't be an issue if tmo would get this area to the 1900mhz band or at least close lol.
[T-Mobile, Samsung Galaxy SIII] Perseus:
Did you try flashing a ATT Radio for I747 and then changing the APNs to T-Mo ?
[T-Mobile, Samsung Galaxy SIII] henslo:
Yes, But the only place in NC to get refarmed up is Charlotte. My area still stuck behind. Changed apn tried almost every thing i can think even flashing tmo radios just had no signal at all. Going to do a little more flashing different radios and roms like Hyperdrive with tmobile option . If nothing works she'll just have to either wait on tmo or trade. Guessing a trade would happen before the latter.
[T-Mobile, Samsung Galaxy SIII] Perseus:
Would you mind re-stating your problem statement ? I am sorry I can't seem to find the exact problem from your last 3-4 posts. I know you are trying different modems. But why did you start down this path ? Kindly if you don't mind re-state the problem.
[T-Mobile, Samsung Galaxy SIII] henslo:
Sure, my mother has at&t s3 I747 using T-Mobile Sim and because T-Mobile is slack on getting my area updated to 1900mhz band or LTE. I'm trying to figure a way to enable the 1700mhz band on her phone. Restoring a T999l nv backup thru QPST works until reboot or just doesn't stick, flashing radios from T999 results in no signal at all. The thread I linked earlier is where I got my start and they seem to be stuck or losing interest as Doc stated will probably not continue or move on. My last resort is try trading or selling her device and getting a tmo phone
[T-Mobile, Samsung Galaxy SIII] Perseus:
Thank you. It really helps me to understand now. Yes I did follow your previous discussion with Doc.

If its a SGH-I747, I genuinely advice you to not muck up with Restoring wrong NVbackup knowingly. If the device hard bricks, you will loose big.

Here's what I advice. Go back to ATT Stock via Odin making sure you have the latest Modem for this phone. After that, use an AOSP Rom such as Slim Rom for this device and then switch your APN to Fast.T-Mobile.com. It should be one of the choices. In addition, you have a button under Quick Settings to add for LTE. Add that and then go to Quick Settings and turn it on. This seems to be the only way (that I know) to Turn that on. After that, Go back to Settings > Data and make sure the Roaming Settings are on. There's 2 of them. It will warn you that charges apply for Roaming. Hit ok. T-Mo does not charge.

Once all of the above is completed, install Speedtest.net app and run the test for 2 servers nearby. Post the Results for me.
[T-Mobile, Samsung Galaxy SIII] henslo:
Tried that, but didn't work still on edge and couldn't even begin the speed test kept getting network communication errors. I'm just going to craigs flip it or local phone store for trade. Thanks for the help. But until tmo gets this area refarmed to LTE its not going to work.

Sent from my SGH-T999l
[T-Mobile, Samsung Galaxy SIII] Perseus:
Are you saying you won't get basic 2G signal either ?
[T-Mobile, Samsung Galaxy SIII] henslo:
Get basic 2g signal, but that's it. Still wouldn't complete the speed test. Even drove in city limits with it still wouldn't complete the speed test.
[T-Mobile, Samsung Galaxy SIII] DocHoliday77:
That is correct. Also the fast.mobile apn probably won't do any good either till they do upgrade.

Again, I do not recommend this, but I think I saw someone say they applied the T999L nv data, and while working ran "reboot nvbackup". On a normal reboot this doesn't help, but apparently if they just use "reboot nvrestore" every time the want to reboot, it would rewrite and keep it working.

I don't like the idea of writing nv over and over, but it may be an option. But it's your phone, your call.
[T-Mobile, Samsung Galaxy SIII] DocHoliday77:
OP Updated!!!

OP has been updated to include the leaked UEMJ4 modem!

Enjoy!

Remember, everyone has a different best modem. What works best for me, wont necessarily be best for you! And any new modem, may or may not provide improved performance for any given user at any given location.

What am I getting at?

The only way to know for sure, is to run the tests yourself!
[T-Mobile, Samsung Galaxy SIII] Perseus:
Thanks Doc!

Are they going to update Bootloader too ? Any idea when the actual update going to come for Stock TW ?

EDIT - Modem flashed Successfully on my 4.3 Rom. The speed seems wee little bit better (~2 to 4 MBPS Higher) than what I'd get with previous modem.
[T-Mobile, Samsung Galaxy SIII] TheLastSidekick:
When's the update for us coming? November 24th.
[T-Mobile, Samsung Galaxy SIII] AndroidLover813:
I have a T-Mobile GS3 T999L version and I've been trying to unlock. I've tried to flash different modems but can't get the baseband right. Does anyone know how to successfully unlock with correct baseband? And thanks for all the help you guys give. If it wasn't for xda I'd be pretty bored. Thanks ladies and gents..
[T-Mobile, Samsung Galaxy SIII] Perseus:
If you are on Stock Rom Android v 4.1.2 then try this thread.If you are lucky you might be able to do it. Do follow it to the letter. If you mess it, you will hard brick your phone.

Unlock and Basebands have no connection. You can flash any T999L basebands. Don't try ones from another device.
[T-Mobile, Samsung Galaxy SIII] AndroidLover813:
Thanks Perseus for your reply. I thought I had to flash a different modem or baseband for successful unlock but I will research the link provided and appreciate your help. Thanks
[T-Mobile, Samsung Galaxy SIII] Perseus:
Yes that is true. But for the T999L, I wasn't aware there are any other Modems AKA Basebands.....
[T-Mobile, Samsung Galaxy SIII] AndroidLover813:
Well the T999L versions hidden menu doesn't give the option to select the options to unlock phone and that's where I'm having my problem. I've read a lot and I was led to believe that I may need to either downgrade or flash a different modem and that where lies my confusion. I will upload pic in my next post so you can see what I'm talking...
[T-Mobile, Samsung Galaxy SIII] Perseus:
I trust you. I know what you are referring to. In that case, if you are brave enough, flash one of T999's 4.1.1 Modem and then try the hidden menu. If you don't want to do it, call T-Mo for Unlock
[T-Mobile, Samsung Galaxy SIII] AndroidLover813:
And I'm still not getting the 4th option to unlock...
[T-Mobile, Samsung Galaxy SIII] AndroidLover813:
I'm brave enough.. I love Android... Lol Thanks bro
[T-Mobile, Samsung Galaxy SIII] Perseus:
Then try the T-Mo 4.1.1 Modem. You won't probably get a signal. But that's not what you are after.
[T-Mobile, Samsung Galaxy SIII] DocHoliday77:
It's not going to work guys. It's covered in the faq of the T999L thread. Samsung patched the unlock in 4.1.2.

Since the T999L and T999N shipped starting with 4.1.2 there is no way to do it. You either have to ask T-Mobile for one, or buy an unlock code online.
[T-Mobile, Samsung Galaxy SIII] Perseus:
I think he knows that. But is brave enough to try a T-999 modem on the off chance it does work.
[T-Mobile, Samsung Galaxy SIII] DocHoliday77:
That's kinda what I'm getting at. It's been attempted by at least a dozen others. It's how I know for sure flashing different devices modems won't brick, but won't work either. I don't suggest trying it though as there is simply no benefit I can see anyone getting from it. And though generally safe, the more you flash the more chance there is of something just going plain wrong and causing major issues.

I can appreciate people's willingness to try, but if he read the T999L thread before doing anything it would save a lot of time and trouble. After all, that's one of the reasons I wrote it!
[T-Mobile, Samsung Galaxy SIII] Perseus:
I see your point. Not being very bright today. As to the reading of thread goes, If I get a dollar for every time when I say that.................
[T-Mobile, Samsung Galaxy SIII] DocHoliday77:
Lol! I get lots of those days! And rich, we could be.....if only!
[T-Mobile, Samsung Galaxy SIII] AndroidLover813:
Doesn't work....

---------- Post added at 05:47 PM ---------- Previous post was at 05:41 PM ----------

I understand you guys help us from making mistakes but I also read along forums that it is possible the flash a 4.0.4 or 4.1.1 T999 ROM which would enable the settings I need in the hidden menu. Well least to say it didn't work. I reverted back to stock 4.1.2 and I'm reluctant but I will be buying a code. I tried and I'm happy for it. Thanks for your help guys and so it be known it had nothing about being bright, it was a learning curve that I was willing to take on but thanks for your help... #Perseus #DocHoilday
[T-Mobile, Samsung Galaxy SIII] RoxAbout:
Im in kansas city...this new modem causes the cpu to run constantly in high speed...even after re did the goveners and the cpu ran all day in low speed.

Didnt see any significant increase in speed from speed test... But the fact that it wouldnt let the cpu to sleep/slow down...cant use it atm..

Thanks Doc for the chance to test it out!

rom: S3Rx1.8

kernal: kinetic 1.4

Xposed installed < awesome stuff!
[T-Mobile, Samsung Galaxy SIII] TheLastSidekick:
Might be the ROM. The modem wouldn't cause the CPU to not sleep. I can confirm the 4.3 Touchwiz leak sleeps on this modem and verified my findings with CpuSpy.
[T-Mobile, Samsung Galaxy SIII] DocHoliday77:
Honestly it sounds more like a kernel issue to me....but it could be a combo of Rom/kernel as well.
[T-Mobile, Samsung Galaxy SIII] RoxAbout:
Or possibly something in the combo the new modem doesnt like.

I dont know.. but on UVDMD5 it deep sleeps like a baby and only uses the cpu when needed...only changed the modem.

Also did a cache and davik wipe to make sure was clean... which btw is the same steps used on all of the other modems i tested with this same rom/kernal combo.

This leaked modem is the first to do run away speeds..

Will be interesting to test the final version.

Thanks again Doc :)
[T-Mobile, Samsung Galaxy SIII] Lazarus416:
N00b to Baseband Flashing

My apologies for asking a question that is probably covered int he boards, but the search tool is currently down and I have too many kids, work and college priorities to have time to dig deep....

I am currently running a TMO SGH-T999, rooted with an older version of Hyperdrive (I am trying to find a better ROM when I get a few minutes here and there). Baseband version according to the Device Info is T999UVLJ4. I have noticed that since I had Hyperdrive put on earlier this year, I never get the "4G" icon anymore. (Unfortunately, I bought my phone a few months before the LTE versions came out for TMO.)

1)Will upgrading the modem firmware help with connectivity as well as speeds?

2) Can I still use the Modem flasher at the beginning of this thread? If not, where can I find one? (I believe I have CWM custom recovery installed on my phone if it makes any difference).

3) Since I am posting anyway, any suggestions as to the best performance vs battery life ROM with multiwindow and free tether capabilities? (This is an optional question for me. I mainly need to know about the modem as I have never upgraded one before.)

Thanks in advance for any info.

Laz
[T-Mobile, Samsung Galaxy SIII] DocHoliday77:
1) maybe. Everyone will have a different best modem. Depending on location and other factors.

2) yes, but it's not been updated in forever and only has ICS modems. They will work and may prove better for you, just be aware that it doesn't have them all.

Custom roms won't display 4g like stock. Stock lies to you! When idle it should only show E/G/2G/H. When you are transmitting data it'll ramp up to H/H+. This is perfectly normal.
[T-Mobile, Samsung Galaxy SIII] Lazarus416:
You can't run an ICS modem with a JB ROM can you? My custom ROM is 4.1.2 based and I would like to stay with the most current ones. I thought the most modem listed (posted Oct '13) was 4.1.2 based? If they are all ICS based, are there any that I can upgrade if I stick with JB? (Or am I getting my Android releases mixed up?)
[T-Mobile, Samsung Galaxy SIII] Perseus:
You do are getting your Releases mixed.

To answer your question, the ICS point only applies to the Modem Flasher. Rest of those modems you see are flashable from Recovery.
[T-Mobile, Samsung Galaxy SIII] DocHoliday77:
Yup. Flasher only has ICS modems, but they will work, and may even be better for you than the JB modems. Like I said, it's different for everyone. Every modem is different though. So if you truly want the best there is, you need to prepare yourself for a week or two of testing as it's the only way to decide which gives you the best real world results. Just don't forget to take notes!

And yes, you can run any modem I have posted with any Rom we have. (Some have said it's not the case with the 4.3 release, but I haven't verified yet.)

Just remember, latest is not always greatest!
[T-Mobile, Samsung Galaxy SIII] Lazarus416:
OK, so I should be able to install either of these from CWM recovery then right? Is there a tutorial on how or is it just like installing any other .zip?

Baseband: UEMJ4

From Build: UVUEMJ4 (Leaked)

OS: JB 4.3

Release Date: Oct, 2013

Baseband: UVMD5

From Build: UVDMD5

OS: JB 4.1.2

Release Date: May. 13, 2013
[T-Mobile, Samsung Galaxy SIII] scifan:
Same as any other flashable zip...
[T-Mobile, Samsung Galaxy SIII] Adreaver:
Just confirming that the leaked modem, being a T999 modem, still doesn't work with the T999L(N). At least not on aosp 4.3.

It flashes just fine, no FC's or any other bugs; you just get unknown baseband in settings/about phone, and no service. Not even voice or 2g.

Guess us LTE folks will have to wait for the official release or a new leak.

Sent from my T999L on PAC-man
[T-Mobile, Samsung Galaxy SIII] Perseus:
You guess correctly. You will need to wait for your own update. The fact that modem does not work has nothing to do with AOSP. Its just that you don't have the antenna it expected.
[T-Mobile, Samsung Galaxy SIII] Adreaver:
Figured as much. Just thought I'd mention I was on aosp in case there was a correlation.

On my old phone (sprint gs2) if you were running any aosp, even 4.3, you had to use a modem from the older ICS or GB builds. Something about changes in lib.ril. But any touchwiz 4.1 could use the jellybean modems without a problem.

Either way, I figure more info is never a bad thing in software development.

Sent from my T999L on PAC-man
[T-Mobile, Samsung Galaxy SIII] Perseus:
To my knowledge, these modems are known to work just fine despite AOSP or Touchwiz. No such issues ever reported on this device. My guess is the issue existed either because sprint released modem coded specific to touchwiz or that sprint service CDMA not GSM
[T-Mobile, Samsung Galaxy SIII] TheLastSidekick:
Correct. I thought it didn't on AOSP. Wrong! It doesn't work on SlimROM 4.3.1 though for me anyways.
[T-Mobile, Samsung Galaxy SIII] Perseus:
It does for me. I have Slim 2.0
[T-Mobile, Samsung Galaxy SIII] DocHoliday77:
OP Updated!!!

Added new leaked Modem! UVUEMJC!

Huge thanks to Prod1702 for making this possible!
[T-Mobile, Samsung Galaxy SIII] DupleX01:
Doc could you please advise if is it safe to use this latest modems on my wife's T999V? She currently have the VLDMF2 baseband (Wind Mobile) on Wind Mobile's network. However she is sporting the 4.3 based Slim rom http://xdaforums.com/showthread.php?t=2411330and I was wondering if the newer modem(designed for 4.3) would bring signal/battery/etc improvements.

Thanks in advance!
[T-Mobile, Samsung Galaxy SIII] DocHoliday77:
Modems are almost always device model specific. Meaning the T999 modems will not work for the T999V/T999L/T999N, and vice versa. If you were to flash it, you would have no signal at all.
[T-Mobile, Samsung Galaxy SIII] DupleX01:
That's a pity!

Thanks a lot for the clarification though! :thumbup:
[T-Mobile, Samsung Galaxy SIII] ayeitschris:
has anyone tried the leaked UVUEMJC modem on aosp? how did it go?
[T-Mobile, Samsung Galaxy SIII] silverton:
As long as you have a good signal with your current modem, there really isn't a necessity to upgrade.

I'm running it on CM10.2-M1. Nothing gained or lost coming from MD5. Network speed, signal, and battery life remain unchanged. YYMV of course, some areas benefit more from a new modem than others.
[T-Mobile, Samsung Galaxy SIII] Perseus:
Just bringing to attention for all.

Here's an interesting tidbit to go with the map Doc has in the Op Posts.

FCC app lets consumers check how mobile broadband providers stack up

So the implications are that, apart from speedtest.net app and DSL Reports' app, we have FCC mandated app to check Data Speed. In addition their map is expected to tell you what you should be getting.

Last but not the least, Quoting PCWORLD,
[T-Mobile, Samsung Galaxy SIII] nicky9door:
The Canadian T999V firmware has been released. If it helps, I have the Wind mobile tar already downloaded. If someone lets me know which files to extract I can upload them somewhere to be used in a flashable zip
[T-Mobile, Samsung Galaxy SIII] Idyar:
Made this for my girlfriend. Just repackaged Doc's flashable with the new Wind mk5 modem.

Use at your own risk yada yada.

https://www.mediafire.com/?x1k2z3sruglga5a
[T-Mobile, Samsung Galaxy SIII] Idyar:
Look at the post literally right above yours.
[T-Mobile, Samsung Galaxy SIII] yeeahnick:
i want Videotron, not Wind =S
[T-Mobile, Samsung Galaxy SIII] yeeahnick:
Heres the Videotron T999VVLUEMK5 modem

http://www.mediafire.com/download/i11ksikbikbw4oh/VideotronGS3_VLUEMK5_Modem.zip

I just repackaged Doc's flashable with the new Videotron mk5 modem.

Tested and working!
[T-Mobile, Samsung Galaxy SIII] avi30na:
can i use this baseband on older versions than 4.3? (4.2.2 for example)
[T-Mobile, Samsung Galaxy SIII] silverton:
Have you checked to see if the leaked version matches the official release? MD5's would match if they were the same right?
[T-Mobile, Samsung Galaxy SIII] Nilaim:
Is it a good idea to use a 4.3 modem on the stock 4.1.2 ROM (TMO T999)?

I am using the UVDMD5 in Brazil but it loses GSM connection a lot.
[T-Mobile, Samsung Galaxy SIII] Perseus:
Yes for both of you. The Modem is supposed to be independent of Android Version. I don't think it should matter. You can revert back if you have issues. Nandroids do not backup modems.
[T-Mobile, Samsung Galaxy SIII] Coug76:
DON'T USE THE T889 MODEM ON YOUR T999!

You will probably be very sad if you do...
[T-Mobile, Samsung Galaxy SIII] allendj81:
What the difference between MJ4 and MJC modem for the T999?? I'm currently using the MJC modem and connection are ok. WiFi is terrible, its weak and disconnects and reconnects all the time, a problem I did have before I updated to 4.3. Is WiFi related to radio or rom tweaks?
[T-Mobile, Samsung Galaxy SIII] DocHoliday77:
For the T999, yes for now. I cannot say for the other T999 variants though, and since you can no longer use an older modem on 4.3+ firmware, there is the possibility that future ones will be built to work ONLY on the firmware they originate from.

It should be the same, but there is no way for me to check. The MD5's will NOT match. If there were any changes made after testing the leaked build, it would have been given a new build number and the official would be MJD instead of MJC. Because they are the same, the leak and the official should be identical. Any differences will be due to the fact that the leak was dumped from a device running said firmware, and not a flashable Odin file. This is why the md5sum will not match.

Its neither good nor bad in general. If it works better for you, good. If not, bad.

Samsung does not release full changelogs and discloses zero information about the modems. There is no way to tell what is different from one modem to the next in any build.

If you had the problem before you updated to 4.3, then the problem is not your modem. WiFi can be affected by many things. Rom tweaks, Mods, Modem, Kernel, Modules, Router, Microwave, channel congestion........................
[T-Mobile, Samsung Galaxy SIII] DocHoliday77:
OP Updated!!!

Update OP to include the latest 4.3 modems for:

T999L

T999V (All)
[T-Mobile, Samsung Galaxy SIII] allendj81:
Quote:

Originally Posted by allendj81 View Post

What the difference between MJ4 and MJC modem for the T999?? I'm currently using the MJC modem and connection are ok. WiFi is terrible, its weak and disconnects and reconnects all the time, a problem I did have before I updated to 4.3. Is WiFi related to radio or rom tweaks?

Samsung does not release full changelogs and discloses zero information about the modems. There is no way to tell what is different from one modem to the next in any build.

If you had the problem before you updated to 4.3, then the problem is not your modem. WiFi can be affected by many things. Rom tweaks, Mods, Modem, Kernel, Modules, Router, Microwave, channel congestion........................

Sorry for the typo, I meant to say a problem I DIDN'T have before updating to 4.3 official. I was just wondering if you guys did noticed connection differences between MJ4 vs MJC