yashsingh1/xdaforums huggingface dataset:
[T-Mobile, Samsung Galaxy SIII] MotoDefier:
The best way to tell if you are using one of those roms is a speedtest, 17-36MB down LTE lower than 17 HSPA+ the only time that this would ring untrue, would be in a case where the HSPA+ was over done for a special events such as the Olympics, playoff games, World Series, etc. But it is usually reversed when those events are over. Or if you have a really bad LTE signal, I have had just under 17MB down with almost no signal on LTE, NEVER any lower.
[T-Mobile, Samsung Galaxy SIII] DocHoliday77:
Best way to tell is to start a download and check network type.

I've got a list of cities with LTE ill post later tonight. (Arlington isn't on it)

Problem with using speed tests to determine network type is I've seen hspa+ reach peaks over 30mbps with averages in the mid 20s.
[T-Mobile, Samsung Galaxy SIII] MotoDefier:
Are we talking arlington, tx if so then there is an issue within his rom, while I don't get great LTE speeds in arlington, I do get LTE, I am mobile service technician and travel the entire DFW metroplex daily, if we aren't talking arlington, tx disregard this post.
[T-Mobile, Samsung Galaxy SIII] DocHoliday77:
Not sure. His profile only says Arlington, thats it. I checked both VA and TX and its not listed for either. If its a suburb of Dallas, itd make sense that it might get limited LTE....

Guess I just figured since I had heard of the place before that it was a larger market and would be listed by itself!

If he is in TX, then he needs to start the download and reply with what it says under Network Type.
[T-Mobile, Samsung Galaxy SIII] MotoDefier:
I would say I get between 12-19MB down @ best in arlington on LTE, that could be bleed over from Fort Worth, since its so close, which would explain the lame speeds and I would think arlington, va would definately be listed on its own if it did have LTE being a governmental mainstay.
[T-Mobile, Samsung Galaxy SIII] New Optimus:
on cm and probably most roms if you hit menu and settings go to about phone then status it will show what signal type your connected to. LTE usually sits there even when idle.
[T-Mobile, Samsung Galaxy SIII] DocHoliday77:
Lol, that's exactly where I keep telling people to look!

So you can confirm that while on lte, the network type never changes??? What exactly does it say?

I find thst odd since lte uses a lot more power than hspa or lower. I figured it'd be like they do with hspa where if idle, it stays connected to the 2 or 3g network to save power, then when a data transfer is initiated it jumps to the best available.

If they do this with lte, it'll be like hspa where the status bar icon won't change, but you will see the difference under network type in Settings.
[T-Mobile, Samsung Galaxy SIII] DocHoliday77:
This would make it entirely plausible that in TX only parts of Arlington would get that bleeding over if lte. The rest would be hspa.
[T-Mobile, Samsung Galaxy SIII] DocHoliday77:
Post 2 Updated!

I just added a list of all T-Mobile LTE networks to

Post 2

! Hope it helps answer some of those questions!
[T-Mobile, Samsung Galaxy SIII] New Optimus:
yes it stays on LTE even when idle.

This is while idle as you can see my signal strength is very low, even with that low of signal my battery lasts 18-24 hours I have talked to people with strong connection and they have said that their battery lasts longer on LTE new generations of lte radio are less power hungry and because the speeds are faster they are idle more.

---------- Post added at 07:18 AM ---------- Previous post was at 07:15 AM ----------

Oh and this is with wifi on, again you can see that the lte radio stays active.
[T-Mobile, Samsung Galaxy SIII] DocHoliday77:
Ok, thanks for the screenshots man! Maybe I was totally wrong about LTE abd uts power needs. Or hopefully, T-Mobile just managed to do it right!

You're on a cm rom correct? Do you know, or can anyone else verify the same behavior on Stock Touchwiz? I'm just wondering if when you connect to wifi, for example, it just leaves the last known network type there. Once youre on wifi, it seems a waste of resources to stay connected to lte as well.

Thanks for the info!
[T-Mobile, Samsung Galaxy SIII] MotoDefier:
No it does not on stock, if I switch to wifi, 4g, lte, and cellular drop to just wifi, the only time they are on at the same time is while its switching between the two.
[T-Mobile, Samsung Galaxy SIII] DocHoliday77:
Right, I did expect that. I was actually referring to what it says on the status page in the Settings menu.

On the T999 when you're idle, it doesn't stay on hspa, it throttles down to UMTS. When you connect to wifi, the network type is blank.
[T-Mobile, Samsung Galaxy SIII] MotoDefier:
Ah, my bad.
[T-Mobile, Samsung Galaxy SIII] DocHoliday77:
Can you check on that and let us know? Check Settings, About Device, Status - Network Type, while connected to wifi, while connected to mobile data but idle, and while connected to mobile data but during a download?
[T-Mobile, Samsung Galaxy SIII] Admiral Sir Manley Power:
Sorry for quoting such an old post.... I was just doing a bit of a google search and of course XDA came up...

A little more information on this, if you all don't mind:

SOME versions of the galaxy s3 use the s4 chipset. The way you can tell is by looking at (or remembering, I suppose, if your device had init.qcom.post_boot.sh parameter callouts for cpu0, 1, 2 and 3. I say if you can remember because I’m sure by now most of you have flashed over your stock ROM… d3rp.

The earlier versions had a true dual core chipset (rather than the quad version with 2 cores deactivated)… the reason why is because Samsung figured out, midway through production, that it would be cheaper to build one chipset instead of two separate ones and decided to go ahead and do that and just to a little programming job to accommodate the versions of the chip that needed to be dual core.

Since the devices are pretty much the same, as this user mentioned, despite some firmware, it would actually be relatively easy to turn your s3 into a T999L… you would just need a host device.

I am currently working on this for my brother, which is why I came across this thread.

I’ll keep you guys posted within the next week.

Sorry for the temporary thread hijack.
[T-Mobile, Samsung Galaxy SIII] DocHoliday77:
It sounds like you are implying that later T999's have the same hw as the international versions, or at the least are sporting quad core processors??? (Proof? Documentation???)

And are you implying that the T999 is lte capable? (If so please don't use this thread) it is simply not possible and just the implication that it is will just bring back all the old arguments, which personally, I was glad to see an end of.

I have never heard or seen any claims that later T999 builds have different hardware than earlier ones, let alone proof of such claims.

As to seeing cpu0-cpu3. This alone means nothing. It has been shown time and time again that just because the device shows a certain option or has certain files or contents does not mean it has the functionality. There are many different variants of the s3 and samsung isn't going to rewrite everything for every variant.

If you really want to put the time and effort into turning the T999 into a T999L, I can only wish you luck, but I must say I think you are wasting your time. I believe this is just not possible. If it is relatively easy as you claim, it would've already been done, as this issue has been extensively researched and debated by many people.

Oh, and Samsung didn't just realize a cheaper way to produce. The reason for using different hardware was availability. Production could not meet the demand otherwise. They've done the same thing with the S4 if I'm not mistaken.

I'm sorry and I don't mean to sound rude about this, but this thread is not for turning a T999 into a T999L. I would like to keep that out of here as I don't want it turning into yet another heated debate thread. There are already several of those.

As Ethereal pointed out, they are both S4 chipsets, but they are NOT the same. The radios are different, meaning one has the LTE radio and one does not. How do you enable LTE without a capable radio?

Also, after a quick search I can tell a couple more things. First if what you claim is true, then I guess the gpu is also downgraded by the firmware. The ONLY two S4 chipsets that are quad core also have Adreno 320 gpu. And as far as I can tell neither are used in Samsung devices.

I think it needs to be pointed out, in ending, that just because it's an S4 chipset, does not make it equal to the other S4 chipsets out there. There are significant differences between the different versions. Hence, the different versions!

I wish you luck, and you are more than welcome to prove me wrong!
[T-Mobile, Samsung Galaxy SIII] Admiral Sir Manley Power:
Haha, gladly will do so.

A good example of the similar devices and all it taking to get this working is the ATT version which is exactly the same minus the fw. I am looking for a host device T999L to do this, that is the only thing preventing me as of now. Once I find one I will report back here and gladly prove you wrong ;) with an instruction obviously on how to do this.

Hook both devices up to a Linux machine, it will be done in about 20 minutes.

The issue is exactly what you mentioned... The firmware. Some of which is not flashable through a silly little zip file, however, or even through Odin....

However.... A terminal can access it.

The bottom line remains - the t999L has the same hardware as your t999. Same board. Same processor. Same everything. It can be done. Pretty easily as I said, you just need a t999L host device, Linux desktop, a t999 and two USB cables.

It has not been done because your OTAs don't include anything required to do this.
[T-Mobile, Samsung Galaxy SIII] New Optimus:
Ok there is some confusion, I will do my best to clear it up,

First those screen shots are not touchwiz, the phone is the nexus 4, the S3 is not able to pickup the LTE signal without forcing it to lte only, its not a strong signal here at my house, I am very surprised that the nexus always switches to it.

As you can see in the last screen shot it shows mobile is disconnected, though it leaves it sitting at LTE. The signal bars still indicate its connected to the weak LTE signal, it will actually drop and connect to hspa/umts though so that indicates that it still does check and use the signal available with LTE being preferred.

Do you see where it says Signal Strength and shows 0 dBm 99 asu. I think that is the idle setting, when its actively downloading that changes, with the weak signal here it goes to -114 dBm 30n asu.
[T-Mobile, Samsung Galaxy SIII] DocHoliday77:
I know I am going against my own request to not have this here in this thread, but I do need to respond on one very important thing.

If you are asking for someone to help you with this by using their device, please make them aware that there have been a couple of confirmed bricks when people tried to put T999 firmware on their t999L.

And since I'm already posting about it... the AT&T variant is nearly identical to the T999, except the radio. Now the T999L is also nearly identical, except it uses a different chipset than both others. Also, the T999L uses the radio that is built into the soc, but I am pretty sure the others do not. What I am getting at here is nearly identical means they are different.

Anyway, it sounds like you are simply trying to copy partitions such as efs, pbl, sbl1, etc, (those that are not usually meant to be accessible through things such as Odin), from the T999L to an original T999.

If this is the case, or if I'm even close to correct, I really hope you are truthful with whoever is letting you use their device. It is MUCH more likely you will brick it, than you will succeed. AND that if you do brick it, it might not be recoverable through the usual jtag process.

I do wish you luck, and I would like to hear your results one way or the other.
[T-Mobile, Samsung Galaxy SIII] New Optimus:
ok I checked it out on the s3 with touchwiz,

it actually says the same thing as the nexus, though when on automatic it will go to lte but then drop it, and forcing it to lte will keep it there. So not really a good check.

There is however one very noticeable difference, on the nexus it says Mobile network type LTE:13

On the s3 it says LTE:14
[T-Mobile, Samsung Galaxy SIII] MotoDefier:
Here you go.
[T-Mobile, Samsung Galaxy SIII] DocHoliday77:
The odd thing here is that on the T999 at idle it'll go to UMTS. I does this because it requires less power to hold that connection.....

I'm wondering if it still does this on yours, only it doesn't say so anymore because of past confusion....

I'll have to load up the T999L Rom and see what it does on mine...
[T-Mobile, Samsung Galaxy SIII] MotoDefier:
Just wondering if the T999L is able to hold the connection without power loss, because of its hybrid onboard modem, I actally get better battery life when I'm on a mobile network than when I'm on wifi.
[T-Mobile, Samsung Galaxy SIII] DocHoliday77:
Now that's even stranger. In my experience it takes a lot more power to use a cell network than WiFi. The signal distance alone requires it pretty much. You have to put a lot more power out to transmit to a tower that can be even just a half mile away, than you do to transmit to your wireless router only a few yards away.

Do you have your stuff set to only sync or update over WiFi? This is the only reason I can think you would see that result. That and I've always heard about LTE being rather power hungry to begin with.
[T-Mobile, Samsung Galaxy SIII] MotoDefier:
I do have it set to sync everything on wifi, while I only have core services synced over mobile, but I usually end up manually syncing most of it a few times a day.
[T-Mobile, Samsung Galaxy SIII] New Optimus:
From my understanding new LTE tech is less power hungry then it used to be.

then on idle its quite less power hungry then even hspa. though i do find it odd that on wifi would be worse battery.
[T-Mobile, Samsung Galaxy SIII] MotoDefier:
Yeah, odd indeed, but I usually go all day, 6:30am - 7:30pm before I'm @ 30% or below on wifi I have to charge around 3:30pm and am usually around 20% or below.

It could be that my wifi drains more battery because it serves up 65MB down and 32MB up. Obviously uses IPv6 tunneling more often than IPv4 tunneling. Where as mobile networks usually only uses IPv6 tunneling when connecting to secure servers or multiple servers at once for things like torrents and such. The only reason I know this could be the case, is because I only use wpsk2 verification which through my router requires IPv6 tunneling to connect, I have had friends with older devices that don't support IPv6 won't connect to my router unless I allow them to use wpa to connect.
[T-Mobile, Samsung Galaxy SIII] deerkiller:
stock firwear progress

Hey Doc i was wondering how it was coming along with the stock Firmware ? I see you have a multi step process that will basically do the same thing . I have been reluctant to go to another rom because of this reason ....I did root with motochopper for a while, then after i signed up for jump i wanted to see if i could go back to stock out the box . That was not a problem , but i still had the same recovery .. Thanks for everyone's had work on the project , LTE is starting to come on in spots around where i live at and as funny as it sounds, i am glad that i lost my phone and got an LTE version. i would have never known just how fast LTE is over current 4G if i hadn't .....its like being connected to your home WIFI in public .....probability faster it is just unreal ...but anyways thanks again .:good:
[T-Mobile, Samsung Galaxy SIII] DocHoliday77:
Moto and I have a few things left up our sleeves! I'm hoping we can have something ready to test in the next day or two.

If all you have done is root your phone, you don't have to worry about any of this stuff. In the SuperSU app, and probably Superuser too, is an option for full unroot. As long as you haven't made any changes or flashed any mods, kernels or recoveries that'll take you back to the out of box state (except for data of course).
[T-Mobile, Samsung Galaxy SIII] Madre Monstruo:
trying it out now... :)

---------- Post added at 07:25 PM ---------- Previous post was at 06:28 PM ----------

Okay, I'm rooted. now how do I install the deodexed version?
[T-Mobile, Samsung Galaxy SIII] LoopDoGG79:
Install a custom recovery. Easiest way is install open recovery script, or TWRP thru Goo manager or CWM thru Rom manager. I prefer TWRP. Also, make a nandroid backup first and do some research on the do's and don'ts of flashing.

"The farther backward you can look, the farther forward you are likely to see."

Winston Churchill
[T-Mobile, Samsung Galaxy SIII] Madre Monstruo:
I keep trying to reboot in recovery with TWRP but it reboots in Android System Recovery
[T-Mobile, Samsung Galaxy SIII] LoopDoGG79:
Hmm, maybe they don't have one for the T999L, sorry.

"The farther backward you can look, the farther forward you are likely to see."

Winston Churchill
[T-Mobile, Samsung Galaxy SIII] Adreaver:
They don't. You need to use the one in DocHoliday's sig, and flash it in Odin.
[T-Mobile, Samsung Galaxy SIII] DocHoliday77:
I think.cwm has one for the T999L, but I don't recommend using it. Some roms won't flash with it installed, but with the T999 recoveries you have much broader compatibility.
[T-Mobile, Samsung Galaxy SIII] Madre Monstruo:
Okay thanks. yeah I prefer TWRP. Hmm.. Okay. damn this LTE. lol

---------- Post added at 09:11 PM ---------- Previous post was at 08:17 PM ----------

I'm sorry, I'm still new to this. I downloaded the T999L_UVAMB7_Deodexed(For_T999L) zip file and I don't know how to flash it on Odin? I flashed the Rooted Stock ROM just fine. but yeah. I'm confused on this one.
[T-Mobile, Samsung Galaxy SIII] DocHoliday77:
That one is for flashing.in recovery. Sorry for the confusion.

So.If you haven't already, you need to flash TWRP in Odin. Then flash that Rom from TWRP.
[T-Mobile, Samsung Galaxy SIII] Madre Monstruo:
Gottcha! Thanks! I'll figure it out in the morning. you've been an awesome help to me!
[T-Mobile, Samsung Galaxy SIII] manofsteel1:
is mb7 the latest? I was heartbroken to see it doesnt have multiwindow
[T-Mobile, Samsung Galaxy SIII] MotoDefier:
As of right now, yes our T999L is less feature rich than its predecessor, I know, its dumb, Samsung and T-Mobile both, had no comment when I contacted them, other than, ::T-Mo:: "oh, you have 4.1.2 JELLY BEAN, that was the multi-window update, I guess you were unfortunate enough not to recieve it."

::Samsung:: " yes, your device will be getting that update, its up to T-Mobile when it gets released, but they do have it, and are supposed to be working on it."

Both of these answers were given about two weeks after DocHoliday77 & I started work on all of this.
[T-Mobile, Samsung Galaxy SIII] Adreaver:
In the meantime, T999 ROMs will work, provided you flash them with a T999 recovery.

And always keep the mb7 modem, md5 and earlier will not work on the T999L.

Sent from my T999L on PACman
[T-Mobile, Samsung Galaxy SIII] kava1:
hey guys i'm picking up a T999L for dirt cheap. since i don't get lte at work (only edge) will i be able to use it with at&t and will it work on at&t's lte? thanks
[T-Mobile, Samsung Galaxy SIII] DocHoliday77:
It does support LTE on band 17 (AT&T), but you'd need to unlock it and I've no idea how well it'd perform.

Out of curiosity, where is it 'dirt cheap'?
[T-Mobile, Samsung Galaxy SIII] MotoDefier:
That would be great info to have!
[T-Mobile, Samsung Galaxy SIII] kava1:
craigslist. i was reading up on it and looks like some ppl were able to use their tmobile note 2 on at&t's lte network by changing some apn settings.
[T-Mobile, Samsung Galaxy SIII] DocHoliday77:
Ahh. Be really careful. Lots of people have been screwed when buying these things on CL.

Before you buy meet the seller at a tmobile store and have them check if the omei is blacklisted. Then have the seller ask them to print out or show you proof they have paid for the device in full.

If its dirt cheap, that would just signal to me that extra caution is needed. Of the seller won't comply with your request, do not buy it.
[T-Mobile, Samsung Galaxy SIII] kava1:
yes, i'm meeting him at a tmobile store after work so they can verify everything. btw, is rooting and unlocking the same thing?
[T-Mobile, Samsung Galaxy SIII] DocHoliday77:
Nope not even close. You have to unlock it to allow it to work on a different carriers network. (This isn't unlockng a bootloader btw. Ours isn't locked to begin with)

Rooting just gives you access to parts of the file system that'd otherwise be inaccessible.

There is an unlock method for the T999. There is one POSSIBLE way to do so on the T999L, but no ones been willing to try it yet.if you're not willing to try it or if it doesn't work you will have to buy an unlock code online.

(Unless the seller can convince T-Mobile to unlock it BEFORE he sells it to you.)
[T-Mobile, Samsung Galaxy SIII] kava1:
i saw your post about flashing a prior radio in the unlock thread. i don't mind trying it but afraid i might brick the device..
[T-Mobile, Samsung Galaxy SIII] MotoDefier:
Tmo unlocking requires fully paid device, bill paid current, and its emailed to you, not in store.

Not sure if they still unlock as there has been recent legislation against it.
[T-Mobile, Samsung Galaxy SIII] kava1:
i will talk to the seller and see what he can do.. thanks for your help!
[T-Mobile, Samsung Galaxy SIII] Adreaver:
Tmo store in the mall where I work said they will sell you an unlock code after 90 days of service and minimum 2 on time payments.

And I will gladly try the unlock dialer code, including flashing the LJA modem, but I have no way to test as I don't have a sim from another carrier.

Sent from my T999L on PACman
[T-Mobile, Samsung Galaxy SIII] athlonxp2300:
Also have them make notes on that guys account that he sold it. People have been selling clean esn phones then a few days later calling into report it stolen to file an insurance claim. The phone shows good at time of sale, then gets black listed a couple days later.
[T-Mobile, Samsung Galaxy SIII] MotoDefier:
If that happens to you, you can pm me I will port your imei from your previous phone to the new one for you, as long as you still have it, you can't sell it, you have to keep it in a drawer, safe, etc. It will be illegal for you to part with it if you need that done, its the only way to legally port an imei from a donor.
[T-Mobile, Samsung Galaxy SIII] Madre Monstruo:
I hate to be a pain, but how do I flash twrp in odin?
[T-Mobile, Samsung Galaxy SIII] DJ_SpaRky:
Recovery install process:

1. Download and install USB Drivers from here: Thanks to [MENTION=4081205]DocHoliday77[/MENTION] for hosting

http://www.androidfilehost.com/?a=show&w=files&flid=1368

2. Download and extract ODIN 3.07 from here: Thanks to [MENTION=4081205]DocHoliday77[/MENTION] for hosting

http://www.androidfilehost.com/?a=show&w=files&flid=1369

3. Download TWRP 2.4.4.0 or 2.5.0.0 recovery image (.tar file) from here: Thanks to [MENTION=4081205]DocHoliday77[/MENTION] for hosting

http://www.androidfilehost.com/?a=show&w=files&flid=5155

4. Save all open files and reboot computer

5. Boot phone into Download mode (also called ODIN mode) by shutting down the phone and holding Vol Down & Home then pressing Power until it vibrates, still holding Vol Down & Home buttons, until the "Yellow Triangle" screen shows up.

6. Plug phone into computer and open ODIN 3.07 and make sure that only "Auto Reboot" and "F. Reset Time" are checked.

7. Click on the "PDA" button (right side about half-way down), browse for TWRP .tar file, click "Open" button.

8. Click "Start" button and watch to "Reset" or "Fail" to show in the 1st square (upper left side)

9. Phone will reboot, then power down and boot into recovery by shutting down the phone and holding Vol Up & Home then pressing Power until it vibrates, still holding Vol Up & Home buttons, until the blue "TeamWin" screen shows up.

10. Enjoy your Team Win Recovery Project custom recovery on your Samsung Galaxy S III 4G LTE SGH-T999L (d2ltetmo)

11. Profit!