[Guide] Tmobile N3 on AT&T's Network the Unofficial Developer Edition, CM11/KitKat

Jayster0966

Senior Member
Oct 20, 2012
1,553
1,230
143
Orange County, CA
^^^ I stand corrected then. I must apologize for the misleading effort to help out.

Edit: I see that the T-Mo version has the WCDMA band of 1700/2100 while the AT&T version does not. Would that explain the switching that mircury is mentioning about?
 
Last edited:

Bob Simons

Senior Member
Nov 21, 2007
373
89
0
Carrboro, NC
dont know if this is correct but I sure hope so

^^^ I stand corrected then. I must apologize for the misleading effort to help out.
I followed mircury's advice and got the SM-N900T to use on AT&T so I'm hoping it's fully compatible. I haven't upgraded the baseband from the original M17 but have tried a few KK roms and have done well with the W03 SlimRom where the current release works on either bootloader. So far, I haven't had worse results than with previous AT&T S3s and S4s. So either I'm delusing myself of mircury's correct, or it doesn't matter.

I'd like to see confirmation from someone who actually knows. I'm just repeating someone's else's info here.
 

Jayster0966

Senior Member
Oct 20, 2012
1,553
1,230
143
Orange County, CA
I followed mircury's advice and got the SM-N900T to use on AT&T so I'm hoping it's fully compatible. I haven't upgraded the baseband from the original M17 but have tried a few KK roms and have done well with the W03 SlimRom where the current release works on either bootloader. So far, I haven't had worse results than with previous AT&T S3s and S4s. So either I'm delusing myself of mircury's correct, or it doesn't matter.

I'd like to see confirmation from someone who actually knows. I'm just repeating someone's else's info here.
Thanks for your input though. I guess I have been believing in the wrong reasons (regarding switching) for a while now myself.

I have actually done the official upgrade to KK 4.4.2 and now running the VisionX KK rom. Just lately I have noticed (after trying 3 different KK roms) that the switching does happen quite often on my phone. (I happen to work in a near-dead zone) I actually prefer the switching now my phone seems to be more stable for receiving SMS and MMS. (used to miss half of them due to spotty service)
 

JJ2525

Senior Member
Sep 29, 2012
333
35
0
This is OT, but re: bootloaders...I am running slim rom v8 and have seen bootloader mentioned a few times. How do I know which bootloader I have and whether I need to upgrade it/how to do that? I have to be honest, I don't even know what a bootloader is.

Also, doesn't constantly switching between lte and hspa use a crapton of battery? And hspa uses more battery than lte in general, right?
 
Last edited:

Bob Simons

Senior Member
Nov 21, 2007
373
89
0
Carrboro, NC
look at the baseband under about phone

I think all N900T phones shipped with a baseband ending with M17. I also think that unless your phone was stock and unrooted you could not get an OTA update. The OTA 4.4.2 update would change the boot loader/baseband. Otherwise you'd have to use Odin to change the boot loader. And finally, until very recently no recovery worked on both the old and new Boot loaders. This is a long way of saying that you would know if you do not still have the original. But to be sure, check the baseband.
 

JJ2525

Senior Member
Sep 29, 2012
333
35
0
OK, my baseband ends in MI7. I'm rooted, running slimrom v8 with leankernel 1.2 and twrp. What does this mean going forward and flashing updated versions of my current rom and different roms?
 

Bob Simons

Senior Member
Nov 21, 2007
373
89
0
Carrboro, NC
it means you're going to want to update your bootloader at some point

OK, my baseband ends in MI7. I'm rooted, running slimrom v8 with leankernel 1.2 and twrp. What does this mean going forward and flashing updated versions of my current rom and different roms?
First off, some qualifications. I'm not a dev or a coder so I'm not sure of any of this. If I'm wrong, I'd appreciate being set straight. Here's what I think I know. The bootloader is linked to what recovery you can use and what kernel you can use. Even if new recoveries keep compatibility with both old and new bootloaders, they'll stop support at some point. And new roms will stop support for kernels which run on the old bootloader. So you'll have to upgrade or be left behind, probably sooner than later if you care to be up to date or get new developments. And it's a silly use of dev's resources to keep backward compatibility beyond a certain point.

But at the moment it's rather complicated to update the bootloader and there is still some hesitation about giving up the ability to run old 4.3 roms. I think at the moment you have to Odin a 4.4.2 rom, root it, update to a recovery compatible with 4.4.2 if you didn't already, then go back to installing the rom you wanted. I hope the bootloader itself will be isolated so it could be installed directly. So then the process would be to update the recovery to one compatible with both series bootloaders, maybe install a rom compatible with both bootloaders, like Will's current 8.5, then just install the new bootloader. This way, the phone keeps running through the process and then at the end, you can use any new rom which requires the new bootloader. But this is all a combination of guesses and hopes.

Maybe someone who understands this will comment and say if I'm on the right or wrong track. There are also some who find hesitation somewhere between humorous and contemptible. And they've got a point, too.

Anyhow, that's how it looks to me. As soon as I learn how to do just the bootloader, I expect I'll do that. There's a TWRP which supports both bootloaders and the current Will03 SlimRom 8.5 does both bootloaders with the supplied kernel and there are probably others, too, so it should be fairly painless. Back up in recovery first, etc.
 

Bob Simons

Senior Member
Nov 21, 2007
373
89
0
Carrboro, NC
here's one person's advice on how to upgrade

Thank you very much for the detailed info. What I'll take from that is...leave my phone as it is now!
according to this post, http://forum.xda-developers.com/showpost.php?p=51043213&postcount=1217 , DriftorX says

Odin back to stock 4.3 and ota update to 4.4. Or download the zip of 4.4 and Odin it with the bootloader then reroot with cfroot and than do as normal to get custom recovery and flash away.

I'm wondering if someone will either explain how to just Odin the bootloader or will create a zip or tar to do just that as I said above.

You might try the current SlimRom 8.5 as it's compatible with both and seems to be good.
 

JJ2525

Senior Member
Sep 29, 2012
333
35
0
I have a weird issue that I'm unsure whether it is related to the signal problem I described last week. When I am on wifi, when I check my phone status I have no trouble maintaining an LTE signal. However, if I turn off wifi, I have trouble maintaining lte in the same exact place, as it switches between lte and h+ but spending 90% of the time on H+. Anyone experience a similar issue?
 

mrv427

Member
Mar 8, 2014
5
0
0
[QUO TE=rock ina ndro id;47711368]double thanks:good:

---------- Post added at 08:11 PM ---------- Previous post was at 07:56 PM ----------

hey guys...was wondering if anyone is using tmobile note 3 on att network with their microcell????? does it connect to att microcell....any help is appreciated...thanks again.....[/QUOTE]
I can't saw if it will. But I have a note 3 from at&t and it's always having trouble with the mirocell. At&t say it's the lte in the phone. The mirocell is only a 3g booster. So is your signal sucks then you're not going to get much more. The signal is bad where I'm at and we have a micro so is always disconnect it from my phone note three s3 s4.
 

kwida94

New member
Mar 20, 2013
3
0
0
mms messaging

This is for people who have AT&T Service and are looking at the T-Mobile US Note 3 (N900T).

Why are people wanting to use a T-Mobile Note 3 on AT&T?

Because AT&T, much like Verizon, has tried to lock down their phones making it very difficult to use custom ROM's or apps that require root. AT&T and Tmobile's networks are similar. The N9005 is not an option since it does not have the required LTE bands. The N900T (Tmobile Note 3) is bootloader unlocked. More on that later. The progress made on the N900A is shown below. Note the limitations because of the locked bootloader.

As of 10/7/2013 root has been obtained for the AT&T version. This will not trip the trip the KNOX warranty counter.
As of 12/5/2013 custom ROMS can be flashed to the AT&T version. No kernel flashing.* If you don't have an Odin version of your stock ROM do not try this. This does not trip the KNOX warranty counter.
As of 12/16/2013 Safestrap is available for the AT&T version. This will allow you to flash custom ROMS but not kernels.*
As of 1/21/2014 KitKat is available for the N900A.

*Custom kernels still remain out of reach at this point for the AT&T version. The bootloader is still locked. This means no AOSP based ROMS like Cyanogenmod, and future versions of Android with its associated kernel will only be available for the AT&T version when AT&T releases it or there is an AT&T leak.

Does the T-Mobile Note 3 support ALL bands used by AT&T?

Yes it supports all bands used by AT&T. Full compatibility.

What bands does the T-Mobile Note 3 support? Is it good for traveling outside the US?

The phone supports a large number of bands from the US, Canada and Europe. This was taken from the back of the box.
GSM: 850, 900, 1800, 1900 UMTS: Band 1 (2100), Band 2 (1900), Band 4 (1700), Band 5 (850)
LTE: Band 4 (1700), Band 17 (700), Band 1 (2100), Band 2 (1900), Band 5 (850), Band 7 (2600)

Bands 900, 1800 and 1900 give good coverage in Europe but you will need to verify what bands the foreign carrier uses.
LTE bands 3 and 7 are the most popular in Europe. This phone does not have LTE band 3.

What does carrier/SIM locked mean? Is it the same as bootloader locked?

No. US phones that operate on GSM networks require a SIM card. The carriers don't want you taking your phone to another carrier without fulfilling your contract so they lock your phone to themselves and the SIM cards they offer. Once you fulfill your contract or pay for the phone in full they should be willing to issue you an unlock code. Some carriers like T-mobile make you wait 45 days after you buy the device to unlock it. SIM unlocking the phone will allow you to put a SIM card from another carrier in the phone. See the next question if T-mobile will not unlock your new Note 3.

How can I carrier/SIM unlock my T-mobile Note 3 if T-mobile won't?

Several people have used cellunlocker.net including me. Select U.S.A. T-Mobile and N900T as your device. This also removes any region lock. Chainfire also has an app that is used for the region lock on international phones that has the side effect of SIM unlocking the T-mobile note 3. This works by patching the modem. It requires root. Info on rooting can be found below.

Will LTE work on AT&T?

Multiple people have confirmed that LTE works. There is no speed difference between an AT&T branded phone and the Note 3. Documents obtained from the FCC and also on T-Mobile's site say it supports the frequencies used by AT&T. Do NOT give AT&T your IMEI to your Tmobile Note 3. If you do, AT&T's system will remove your LTE data even though it works perfectly. Give them another AT&T Android IMEI if you have to or if you are coming from an Android phone don't even talk to them. Just remove the SIM in your old phone and put it in your new phone. If you mess up and give them the IMEI some people have gone to the store and gotten the IMEI off the demo unit then gone home and called ATT to change the IMEI. You can also get an AT&T Android LTE IMEI from a family member or friend's phone. It will not effect their service in any way. One user also reported explaining the issue to a rep that changed the default plan and manually made it a plan with LTE. I'm not sure that a lot of reps on AT&T's front line know how to do this though.

What APN settings will my Note 3 need for AT&T and MVNO's?

NAME: ATT Phone
APN: phone
MMSC: http://mmsc.mobile.att.net
MMS proxy: proxy.mobile.att.net
MMS port: 80
MCC: 310
MNC: 410
APN type: default,mms,supl,hipri

Then go to the home screen menu setting, more networks, mobile networks, network mode and change to LTE/WCDMA/GSM.

Video guide done on a S4. Credit: Sunny Nath

If you are using a Straight Talk SIM use this.
NAME: Straight Talk
APN: tfdata
PORT: 80
MMSC: http://mms-tf.net
MMS PROXY: mms3.tracfone.com
MMS PORT: 80
APN Type: default,mms,supl,agps,fota,dun,hipri,entitle

Then go to the home screen menu setting, more networks, mobile networks, network mode and change to LTE/WCDMA/GSM.

If you are using Aio Wireless from AT&T
Name: Aio Wireless
APN: ndo
Proxy: Not Set
Port: Not Set
Username: Not Set
Password: Not Set
Server: Not Set
MMSC: http://mmsc.aiowireless.net
MMS Proxy: proxy.aiowireless.net
MMS Port: 80
MCC: 310
MNC: 150
Authentication type: Not Set
APN type: default,mms,fota,hipri,supl

Then go to the home screen menu setting, more networks, mobile networks, network mode and change to LTE/WCDMA/GSM.

Root, custom recoveries, roms, and kernels for the T-mobile US Note 3

Warning: Flash roms at your own risk. Do NOT flash a N900 rom or a N9005 rom unless the dev has specifically stated that it will work with the N900T. These could have different bootloaders, modems, kernels and other files that are not compatible with our Note 3.

The T-Mobile Note 3 has a dev community that is very large and growing rapidly. You have plenty of options to customize just about everything available on your Note 3. You can flash roms and kernels that give you extended run time and overclocking. We can even cut out the carriers and flash international roms with some modifications so we can have the latest and greatest directly from Samsung. Using custom recoveries such as TWRP will trip the KNOX counter.

For TWRP recovery use this. This is the recommended recovery for the N900T and is the first step to flashing roms and kernels.
TWRP 2.7.0.0 TeamWin Recovery Project is available here.

If all you need is root use this.
CF Auto Root is available for the N900T (T-mobile).

For CWM recovery use this.
The first step is to flash a CWM recovery and can be found here. After that you can flash a pre-rooted ROM that is compatible with the N900T or flash SuperSU here.

Android 4.4 KitKat and Cyanogenmod (CM11)

The Samsung build of Android 4.4 Kitkat (has Touchwiz) has been released for the T-Mobile and international versions.

CM11 is remarkably stable and fast on the Note 3. Cyanogenmod is a rom built off of source code released from Google (AOSP). Cyanogenmod version 11 (CM11) is based on Android 4.4 Kitkat. It is often the fastest way to get the latest Android releases from Google. Cyanogenmod supports phones long after they are abandon by the carriers and device makers. It comes with no carrier apps or bloat. CM11 for the Note 3 is my daily driver.

You will need a few things when flashing to Cyanogenmod.
1. Get the latest nightly from cyanogenmod.org.
2. Get the gapps "full modular package" from here. You will need to flash both the nightly and gapps .zip files in the recovery of your choice. (TWRP or CWM)
3. (optional) S-pen functionality add on for CM can be found here in the play store. You can also follow this guide for additional S-pen features.
4. (optional) You can use the new photosphere camera app that is here. This camera is only available on Nexus devices. It's supposed to have better stitching of photo's than previous apps. The stock CM11 camera app does not have photosphere.
5. (optional) A KNOX partial replacement is here. It is basically truecrypt for android. It creates an encrypted container and you can store sensitive files in it. Encryption and decryption is done on the fly so it is very fast.

Here is a very good build based on CM11 and built by temasek.

______________________________

Further Reading:
Change.org Petition
Bootloader Bounty thread for AT&T version
Dev section for the Tmobile version
i did this and everything works i get LTE on at&t but i can not send or receive mms messages. did i do something wrong? also is there a fix for it? thanks!
 

kingtana1

Member
Jul 27, 2008
15
3
0
Hey guys I've tried to search this thread to try to seek my answer so apologies if I didn't see it and I'm double asking but I as well have a tmo note 3 running flawlessly on att with lte network support... I used chainfire app to get the unlock and so far no problems...

Now I am trying to upgrade to kit Kat but I was getting the error of my device being modified so I was not able to do the Ota update....

I then read here somewhere a way to use Wyman to bypass the error, so I did that and it bypassed the error and it let me dl the Ota update but as soon as I get 100% it let's me know there is an error and it will not let me install...

My question is how did you guys upgrade to kit Kat and if any of you know if I upgrade to kit Kat will I lose root and will the unlock go away?? Sorry for the long post but I would appreciate any feed back as I have searched all over this board and haven't been able to find a solid answer...

Sent from my SM-N900T using xda app-developers app
 

Face_Plant

Senior Member
Mar 24, 2014
2,578
1,475
193
Sykesville
It's not installing because your phone is rooted. Do not update to the official KitKat. You will lose root and there is no way to root it yet. Just flash a KitKat ROM. They're prerooted and most likely way better than the OTA KitKat.
 

Jayster0966

Senior Member
Oct 20, 2012
1,553
1,230
143
Orange County, CA
You can download the KitKat update from SamMobile. Make sure to wipe you phone first then enter download mode and flash with Odin. You will lose root and have to reroot the phone then install your preferred custom recovery. From then on you can flash which ever KK Roms you want to try.

Sent from my VisionX powered SM-N900T.
 

kingtana1

Member
Jul 27, 2008
15
3
0
appreciate the help guys, in all honesty i just want the factory samsung TW rom on here, im not looking to get into any special rom right now, is there a rom out there i can flash thats kitkat tw stock rom? thanks again for help...