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I have a Samsung Galaxy S 2 (euro) currently running
- KJ1 frankenstein rom
- XEU CSC
- KI3 modem
- speedmod 2-13 kernel
One observation is that the phone tends to cling on to very low 3G signals. Arguably this isn't a problem per se - some may argue it's a good thing -- but I can't help thinking it's not the best for battery life.
This is especially true at work where I do have wifi. At home a 3G microcell solves the signal issue.
I was wondering if people found other modems like KI4 - or even earlier ones tackle this scenario differently. I can imagine never ending debates over which is better or worse of course.
I have tasker and thought about setting that to flip to 2G when wifi was detected, but it seems as if that option doesn't work on the SGS2 even with a rooted environment.
Maybe it's not really an issue...
You can check in in SamsungServiceMode and then do network priority I guess. All modems by default are set to hang to UMTS then if not switch to GSM. There's an option there however to do GSM first but i'm thinking it's more like if super strong UMTS is available it'll go there instead of staying on GSM.
I have an SGSII on Telstra running darkyrom XXLPQ with KH3 modem. I've got an issue where data works fine on H+, but whenever the phone drops back to 3G I get absolutely nothing. I've tried disabling fast dormancy etc, but that just seems to reduce how often it falls back. Is there a modem I can use or a tweak that will let it get data on 3G as well as h+?
LethalCorpse said:
I have an SGSII on Telstra running darkyrom XXLPQ with KH3 modem. I've got an issue where data works fine on H+, but whenever the phone drops back to 3G I get absolutely nothing. I've tried disabling fast dormancy etc, but that just seems to reduce how often it falls back. Is there a modem I can use or a tweak that will let it get data on 3G as well as h+?
Click to expand...
Click to collapse
I think you are better off on T-model modem, like DVKF2 by telstra as that will work on your I9100T model best.
I have the same problem on stock 2.3.4, xeu. But it just about never drops back to 3g in Melbourne. So haven't bothered with telstra modem yet.
Sent from my GT-I9100 using xda premium
I have a feeling you don't understand this very well and if I'm wrong I'm truly sorry. Either move to an area that you know does not have hspa coverage (otherwise known as 3g+ or 3.5g or h+ or 4G in North America depending on the phone model,manufacturer and provider) but rather only 3g and test there and come back to us or disable hspa in hidden settings (phone control/nas control/hspa control/choose r99 hspa off),which should disable hspa/hsdpa and hsupa and test and come back to us. That should give you data while 3g symbol is lit at reduced speed of course.
Right now all you seem to notice that when you engage data it is h+ and when it falls back to 3g, the symbol is only for voice over 3g therefore no data arrows.
Yeah, I'm talking about when I'm I'm an area that has poor hspa coverage and it drops back to 3g. Btw, my old xperia had no problem getting hspa in these same areas, so my radio performance is generally pretty bad with the sgs2.
Try all the I9100T modems until you find one that works well for you; they do generally work better with the I9100T than I9100 modems. And if that doesn't work, then you might as well try all the I9100 modems.
I've got an I9100T & found there's 2 or 3 I9100T specific modems that I get great signal strength/data speeds with (and granted 1 I9100 modem), and the rest are ordinary for me.
There is no simple fix for this. It's a trial and error thing. Unless you want to spend hours on the phone to your telco for probably zero result ?
LethalCorpse said:
Yeah, I'm talking about when I'm I'm an area that has poor hspa coverage and it drops back to 3g. Btw, my old xperia had no problem getting hspa in these same areas, so my radio performance is generally pretty bad with the sgs2.
Click to expand...
Click to collapse
Threw me off, because of mentioning 'fast dormancy'.
Good that I apologized in advance then.
I would still recommend testing it the second way I suggested just to see whether it works at all. I also sometime end up in an area that while seeming to have full strong signal, due to a congestion at a peak and other factors, has no or very little data throughoutput (this being in canada).
As suggested by others, testing other modems may help as well.
Don't even get me started with sgs2 and nokia's regarding radio.
Question - does anyone have any idea what is different with the Saurom rom that allows me to get LTE speed (18-20 down, 4.2 up) with the status notification switching to LTE for data, while no other ROM does? (Baltmore area). I tried a couple of the new UCLD3 roms today, achieved somewhat decent 4G speeds, but no LTE. I kept the UCLD3 modem and went back to the Saurom rom, and boom - back up to LTE speeds again with proper switching when making calls.
I'd really like to know what Saurom rom has (in the build.prop maybe?) that the others don't. Would love to switch to an ICS for daily, but download speed is the priority.
Thanks.
tmaurice said:
Question - does anyone have any idea what is different with the Saurom rom that allows me to get LTE speed (18-20 down, 4.2 up) with the status notification switching to LTE for data, while no other ROM does? (Baltmore area). I tried a couple of the new UCLD3 roms today, achieved somewhat decent 4G speeds, but no LTE. I kept the UCLD3 modem and went back to the Saurom rom, and boom - back up to LTE speeds again with proper switching when making calls.
I'd really like to know what Saurom rom has (in the build.prop maybe?) that the others don't. Would love to switch to an ICS for daily, but download speed is the priority.
Thanks.
Click to expand...
Click to collapse
Mabey an overclocked kernel.....
"Since God created man, and man created the Galaxy Note, the Galaxy Note are like a gift from God, Randal!*"
I'm getting lte speeds with the latest ics leak.
Sent from my SAMSUNG-SGH-I717 using xda premium
Strating a new topic to figure out which radio works better on T-Mobile for AT&T JB update.
Before JB update, like several other people on this forum, I have been using i717 on T-Mobile network . 4G has been working fine with GT-N7005-IMM76D-DXLJ2 Rom and UVLG3modemfori717_gt-n7005amss radio.
1. UVLG3 modem with GT7005 amss gives no signal.
2. UVLG3 modem with JB amss gives no signal.
3. Stock radio and amss in JB update only connects to Edge. (unless you are in area where T-Mobile has 3g on 1900?)
4. Blaze ICS modem connects to 4g but signal bars are not shown in status bar.
For the best modem so far, check the below post...
http://forum.xda-developers.com/showthread.php?p=41052527
If anybody else tried any other combinations, please post your experience in this thread.
Thanks.
same here plus i try it with Telus modems too not signal (signal comes and gone)
I made my own combo for WIND in Canada (confirmed to work on T-Mobile with much higher speeds). It's really slow (about 1 Mbps down and 50 kbps up) but at least it works (good voice/signal strength and somewhat usable data)
It's the SGH-T989D (Telus Galaxy S II X) latest modem (TLMC4) and AMSS from the old Blaze modem posted around this forum. Just flash it with CWM.
http://speedy.sh/uyHBp/SGH-T989D-TLMC4-amss-from-blaze.zip
Steps:
1. Flash in CWM
2. On reboot, do a network scan
3. Open dialer, dial *#2263# and select WCDMA Prefs -> WCDMA 1700
4. Do network scan again, WIND (or whatever your AWS provider is) should appear. Select it and it should register.
5. You can multi task back to the service mode and go back and select "[1] Automatic" to use all bands again.
No responsibility if it bricks your phone, it works on my SGH-i717R without issues
OT: I also tried SGH-T989D_TLMC4_radio.zip and it works on Bell/Telus/Rogers without any mods. However, trying any T989 combos never really worked (some did, but data kept dropping).
windroidHD said:
Strating a new topic to figure out which radio works better on T-Mobile for AT&T JB update.
Before JB update, like several other people on this forum, I have been using i717 on T-Mobile network . 4G has been working fine with GT-N7005-IMM76D-DXLJ2 Rom and UVLG3modemfori717_gt-n7005amss radio.
1. UVLG3 modem with GT7005 amss gives no signal.
2. UVLG3 modem with JB amss gives no signal.
3. Stock radio and amss in JB update only connects to Edge. (unless you are in area where T-Mobile has 4g on 1900?)
4. Blaze ICS mpdem connects to 4g but signal bars are not shown in status bar.
If anybody else tried any other combinations, please post your experience in this thread.
Thanks.
Sent from here.
Click to expand...
Click to collapse
This is an important thread for this forum. I'm in the same situation, utilizing the AT&T rom on an AT&T device, and trying to use it on T-Mobile.
My experience has been strange. I am using the stock firmware radio with the AT&T JB update, and I seem to connect to 4G randomly on T-Mobile, switching between UMTS:3 and HSPAP15. I am usually on Edge more often than "4G". I don't have LTE in my area, and "3G" on 1900 doesn't work on my Wife's Iphone.
I tried the UVLG3 Modem for i717, and got no signal at all.
I haven't tried the Blaze modem. What I want to know, is what is the experience with Blaze when you look at system status? UMTS:3? HSPAP?
I am on stock modem in JB rom right now, shows UMTS3 in status.
Nothing strange about that, it is in UMTS when data is idle, anything else is when data is active.
You only get 3G on T-Mobile if its a "re-farmed" 1900 MHz region, where they moved 3G from AWS to 1900 MHz. If you go outside your zone you will only have 2G.
zivan56 said:
Nothing strange about that, it is in UMTS when data is idle, anything else is when data is active.
You only get 3G on T-Mobile if its a "re-farmed" 1900 MHz region, where they moved 3G from AWS to 1900 MHz. If you go outside your zone you will only have 2G.
Click to expand...
Click to collapse
What is HSPAP:15 considered? HSPA 15Mbps? Is that at 1700MHz or 1900Mhz?
crazeco said:
What is HSPAP:15 considered? HSPA 15Mbps? Is that at 1700MHz or 1900Mhz?
Click to expand...
Click to collapse
You would have to go to field test mode to find out, Android does not have such details. Dial *#0011# and find at the very top "RRC: .. BandX," where X is a number. Is it 4 (AWS) or 2 (1900Mhz)?
There may be an item (radio dependant) called DC_HSPA to indicate whether its dual cell HSPA(+). Post a screenshot and I can check it for you.
zivan56 said:
I made my own combo for WIND in Canada. It's really slow (about 1 Mbps down and 50 kbps up) but at least it works (good voice/signal strength and somewhat usable data)
It's the Blaze 4G latest modem (T769-UVMB1) and AMSS from the old Blaze modem posted around this forum. Just flash it with CWM.
http://www.speedyshare.com/YTNEb/T769-UVMB1-amss-from-blaze.zip
Steps:
1. Flash in CWM
2. On reboot, do a network scan
3. Open dialer, dial *#2263# and select WCDMA Prefs -> WCDMA 1700
4. Do network scan again, WIND (or whatever your AWS provider is) should appear. Select it and it should register.
5. You can multi task back to the service mode and go back and select
No responsibility if it bricks your phone, it works on my SGH-i717R without issues
OT: I also tried SGH-T989D_TLMC4_radio.zip and it works on Bell/Telus/Rogers without any mods. However, trying any T989 combos never really worked (some did, but data kept dropping).
Click to expand...
Click to collapse
With the T989D_TLMC4_radio i got the most sickiest DL ever on CM 10.1 but cant make calls only data and text did you think can modify to work on TMO.
BTW right now o using Telus TELL4 modem and work amazing
Sent from my SAMSUNG-SGH-I717 using Tapatalk 2
Mervingio said:
With the T989D_TLMC4_radio i got the most sickiest DL ever on CM 10.1 but cant make calls only data and text did you think can modify to work on TMO.
BTW right now o using Telus TELL4 modem and work amazing
Sent from my SAMSUNG-SGH-I717 using Tapatalk 2
Click to expand...
Click to collapse
Hmm, can you try this. I've tested it a bit on WIND and data/voice works...the data is slighly more stable/faster (still around 1.5 Mbps/50 Kbps for me)
http://speedy.sh/uyHBp/SGH-T989D-TLMC4-amss-from-blaze.zip
IT works for me on WIND, so it should work on T-Mobile. Same steps as in my previous post above to get it to see AWS carriers. If your T-Mobile service is 1900 MHz, it may just work without any of those steps.
Btw, for some reason it only sees WIND (the modem is non WIND specific) and no other AWS carriers (i.e Mobilicity) when set to WCDMA 1700. No idea why.
I
zivan56 said:
Hmm, can you try this. I've tested it a bit on WIND and data/voice works...the data is slighly more stable/faster (still around 1.5 Mbps/50 Kbps for me)
http://speedy.sh/uyHBp/SGH-T989D-TLMC4-amss-from-blaze.zip
IT works for me on WIND, so it should work on T-Mobile. Same steps as in my previous post above to get it to see AWS carriers. If your T-Mobile service is 1900 MHz, it may just work without any of those steps.
Btw, for some reason it only sees WIND (the modem is non WIND specific) and no other AWS carriers (i.e Mobilicity) when set to WCDMA 1700. No idea why.
Click to expand...
Click to collapse
Tried it, signal strength went from 2 bars with stock modem to 4 bars, status shows UMTS3 when idle and switches to HSPAP:15 briefly.
Speed test
outside the house 7000kbps/1000kbps
Inside the house 1650kbps/66kbps
*#0011# shows rrc band 4, previously it was band 2.
*#2263# doesn't shows any item with * infront, previously automatic had * infront of it.
Tried setting wcdma to 1700 and saw the same performance, rrc band4 and switching between umts3 and hspap:15.
Havn't tested call quality but this has been the best modem so far.
Thanks for sharing.
zivan56 said:
Hmm, can you try this. I've tested it a bit on WIND and data/voice works...the data is slighly more stable/faster (still around 1.5 Mbps/50 Kbps for me)
http://speedy.sh/uyHBp/SGH-T989D-TLMC4-amss-from-blaze.zip
IT works for me on WIND, so it should work on T-Mobile. Same steps as in my previous post above to get it to see AWS carriers. If your T-Mobile service is 1900 MHz, it may just work without any of those steps.
Btw, for some reason it only sees WIND (the modem is non WIND specific) and no other AWS carriers (i.e Mobilicity) when set to WCDMA 1700. No idea why.
Click to expand...
Click to collapse
not sure why but with this ROM (jelly bean) i can lock DC-HSPA8+ and damn it go fast!!!!
this pics are with your modem i will test later today when i go to the mall now works perfect!
Thanks for the help
zivan56 said:
You would have to go to field test mode to find out, Android does not have such details. Dial *#0011# and find at the very top "RRC: .. BandX," where X is a number. Is it 4 (AWS) or 2 (1900Mhz)?
There may be an item (radio dependant) called DC_HSPA to indicate whether its dual cell HSPA(+). Post a screenshot and I can check it for you.
Click to expand...
Click to collapse
I'm now using the Blaze radios posted by Zivan in the link above. I'm getting Band 4 CPCH and FCPH and DCH. Averaging around 3-6Mbps down and 300Kbps up.
crazeco said:
I'm now using the Blaze radios posted by Zivan in the link above. I'm getting Band 4 CPCH and FCPH and DCH. Averaging around 3-6Mbps down and 300Kbps up.
Click to expand...
Click to collapse
Great!!
Mervingio said:
Great!!
Click to expand...
Click to collapse
To be honest, I'm getting better T-Mobile 4g reception with that modified Blaze radio on JB than I did on ICS with UVLG3. Not going to complain!
Anybody managed to get LTE with a JB rom yet?
Question ?.........I picked wcdma 1700 and I'm getting crazy good speeds ....9down 2up..sometimes better What is safe cpu temps? Cause I think it may be heating up
Sent from my SAMSUNG-SGH-I717 using xda app-developers app
Sent from my SAMSUNG-SGH-I717 using xda app-developers app
Wow, good to hear folks...I'm getting rather terrible speeds on WIND. But the phone works, I did a bunch of calling/texting/data usage and its been stable for over a day.
Well I had to reflash for some reason it was picking up excellent speeds then poof gone .. tried changing back to 1900... nothing .. so I reflashed and just picked automatic
Sent from my SAMSUNG-SGH-I717 using xda app-developers app
Hi everyone,
I'm new to the Note, but definitely not new to Android or XDA.
I've got the phone "unlocked" via the radio trick here: http://str8pt.blogspot.com/2013/06/unlock-simfree-method-for-galaxy-note.html
I've rooted it, and have tried a few different ROMs with different radios.
The Blaze radio (and others) I mention are from here: http://forum.xda-developers.com/showthread.php?t=1679722
I am in Melbourne, FL in case location makes any difference.
Here's what I am seeing:
CyanogenMOD 10.1.3 - using Blaze ICS radio I am getting only EDGE speeds. Using "Official TMO ICS Radio" (I'm guessing it's the one from the TMO Note?) , I get NO connectivity.
Stock 4.1.2 - using Blaze ICS radio I am getting 4G, however the signal meter is totally empty as if there's just enough signal to register connectivity but not enough to register a single bar. Download speeds are abysmal in comparison to other TMO phones I've used here - I am seeing downloads at around 1.5MB - other phones are 6, 7, even 8 MB.
My question are as follows:
Using CyanogenMod, should I be using the i717 version? Or the TMO Note version? Is there anything I can do with ANY particular radio to get better than EDGE?
Using the Stock ROM (or a variant), is there are a way to get the signal cluster to function properly? Any way to get better download speeds?
I read that the TMO 4.0.4 stock ROM image can be installed via ODIN and apparently it works correctly (if I am reading correctly) - would the TMO 4.1.2 stock ROM image be installed via ODIN and work as well? (If I can even find a full download of it?)
Should I expect to have to re-flash the radio each time with each ROM? From what I've seen, if I don't, I lose any ability to get 4G until I flash it again. I'd be stuck on EDGE.
Thanks so much guys! I've searched and read till my eyes are crossing and not finding the answers I need. I hope that with the experience that can be found in this forum maybe I can get where I need to be!
Thanks again!
JWhipple said:
Hi everyone,
I'm new to the Note, but definitely not new to Android or XDA.
I've got the phone "unlocked" via the radio trick here: http://str8pt.blogspot.com/2013/06/unlock-simfree-method-for-galaxy-note.html
I've rooted it, and have tried a few different ROMs with different radios.
The Blaze radio (and others) I mention are from here: http://forum.xda-developers.com/showthread.php?t=1679722
I am in Melbourne, FL in case location makes any difference.
Here's what I am seeing:
CyanogenMOD 10.1.3 - using Blaze ICS radio I am getting only EDGE speeds. Using "Official TMO ICS Radio" (I'm guessing it's the one from the TMO Note?) , I get NO connectivity.
Stock 4.1.2 - using Blaze ICS radio I am getting 4G, however the signal meter is totally empty as if there's just enough signal to register connectivity but not enough to register a single bar. Download speeds are abysmal in comparison to other TMO phones I've used here - I am seeing downloads at around 1.5MB - other phones are 6, 7, even 8 MB.
My question are as follows:
Using CyanogenMod, should I be using the i717 version? Or the TMO Note version? Is there anything I can do with ANY particular radio to get better than EDGE?
Using the Stock ROM (or a variant), is there are a way to get the signal cluster to function properly? Any way to get better download speeds?
I read that the TMO 4.0.4 stock ROM image can be installed via ODIN and apparently it works correctly (if I am reading correctly) - would the TMO 4.1.2 stock ROM image be installed via ODIN and work as well? (If I can even find a full download of it?)
Should I expect to have to re-flash the radio each time with each ROM? From what I've seen, if I don't, I lose any ability to get 4G until I flash it again. I'd be stuck on EDGE.
Thanks so much guys! I've searched and read till my eyes are crossing and not finding the answers I need. I hope that with the experience that can be found in this forum maybe I can get where I need to be!
Thanks again!
Click to expand...
Click to collapse
I recently obtained an I717 too, unlocked it, and got it functioning with my tmobile prepaid plan. I'm still on gingerbread rom and using KID radio with decent success. just 4G , using WCDMA band 1700 (*#2263#). I get consistent decent speeds but not LTE.
The hands down best modem to use is UCMB4 - Google it. But it can cause problems with some jelly bean ROMs.
If you want jb more than anything, play with modems. If you want speed AND stability, go jellybean sandwich or black star X with the aforementioned modem.
If you want WiFi calling download skeleton key.
Ucmb4 with any of those three and the proper APN will get you LTE as fast as it's offered in your area
Anthony820 said:
The hands down best modem to use is UCMB4 - Google it. But it can cause problems with some jelly bean ROMs.
If you want jb more than anything, play with modems. If you want speed AND stability, go jellybean sandwich or black star X with the aforementioned modem.
If you want WiFi calling download skeleton key.
Ucmb4 with any of those three and the proper APN will get you LTE as fast as it's offered in your area
Click to expand...
Click to collapse
Hi Anthony820,
I'm currently running your Skeleton Key ROM - not bad at all! But definitely want to try to get CyanogenMod or PACman JB running.
I'll give the UCMB4 radio a shot this evening !
When I had service with TMO (via Straight Talk) I had the best luck with UVLG3.
jman315 said:
When I had service with TMO (via Straight Talk) I had the best luck with UVLG3.
Click to expand...
Click to collapse
Using which ROM?
I've got CM 10.1.3 for i717 installed right now, going through and testing each and will post results.
JWhipple said:
Using which ROM?
Click to expand...
Click to collapse
At the time I was running CM 10.1 nightlies.
Uvlg3, if I recall, will get you good down speed, but mediocre up. Otherwise, it's a solid choice and may be more cooperative with jb builds.
Sent from my SM-N900T using xda app-developers app
Anthony820 said:
Uvlg3, if I recall, will get you good down speed, but mediocre up. Otherwise, it's a solid choice and may be more cooperative with jb builds.
Sent from my SM-N900T using xda app-developers app
Click to expand...
Click to collapse
Looks like you're right - here's just 4 radios that I just tested:
UCMB4 - EDGE only
UVLG3 - 3G/DC(WTF??)/H+ 6.01Mbps up/1.07 Mbps down
UVLE1 - Phone freezes, locks on black screen, had to pull battery
ICSBLAZE - 3G/DC/H+ Network communication issues message when running speedtest.
By the way, what the heck is "DC" on the network indicator where 3G or H/H+ normally is? I've never seen that before!
JWhipple said:
Looks like you're right - here's just 4 radios that I just tested:
UCMB4 - EDGE only
UVLG3 - 3G/DC(WTF??)/H+ 6.01Mbps up/1.07 Mbps down
UVLE1 - Phone freezes, locks on black screen, had to pull battery
ICSBLAZE - 3G/DC/H+ Network communication issues message when running speedtest.
By the way, what the heck is "DC" on the network indicator where 3G or H/H+ normally is? I've never seen that before!
Click to expand...
Click to collapse
I believe It stands for dual channel.
By the way, just checked and CM's WiFi tethering is working as well - nice!
Not sure what I did differently this time but this evening the signal indicator is showing real signal strength, equivalent to what I was seeing on another phone on CM.
JWhipple said:
By the way, just checked and CM's WiFi tethering is working as well - nice!
Not sure what I did differently this time but this evening the signal indicator is showing real signal strength, equivalent to what I was seeing on another phone on CM.
Click to expand...
Click to collapse
Good to hear. I believe not seeing any signal strength is a known issue specifically with the Blaze modem.
Make sure you're changing your APN from epc.* to fast.t-mobile.com
Sent from my SM-N900T using xda app-developers app
Anthony820 said:
Make sure you're changing your APN from epc.* to fast.t-mobile.com
Sent from my SM-N900T using xda app-developers app
Click to expand...
Click to collapse
I'm guessing that would get me LTE if it's available in my area?
I just switched over to it and only got EDGE...
JWhipple said:
I'm guessing that would get me LTE if it's available in my area?
I just switched over to it and only got EDGE...
Click to expand...
Click to collapse
If you're on a modem that'll work with LTE, yep. Otherwise HSPA or Edge.
Make sure, I forget and my Note no longer has service, that the top option is set under Network Type or whatever it is. Network Mode? I don't know, you'll figure it out. The thing that lets you pick between GSM, WCDMA etc..etc..
Anthony820 said:
If you're on a modem that'll work with LTE, yep. Otherwise HSPA or Edge.
Make sure, I forget and my Note no longer has service, that the top option is set under Network Type or whatever it is. Network Mode? I don't know, you'll figure it out. The thing that lets you pick between GSM, WCDMA etc..etc..
Click to expand...
Click to collapse
Ok, I got it figured out. I am on the FAST APN and set to WCDMA/LTE . I'm on 3G/H+ here in the house now - will see how it goes when I head out tomorrow.
Either way, I think it's time to make a backup - it's running marvelously and doing everything I would expect it to!
NOTE: Newest PAC ROM (4.3) running smoothly with UVLG3 modem on T-Mobile without issue
[EDIT]
Scratch that - it worked great until I did the first reboot - then it wouldn't boot up again, even with a battery pull.
JWhipple said:
Ok, I got it figured out. I am on the FAST APN and set to WCDMA/LTE . I'm on 3G/H+ here in the house now - will see how it goes when I head out tomorrow.
Either way, I think it's time to make a backup - it's running marvelously and doing everything I would expect it to!
Click to expand...
Click to collapse
I went ahead and flashed UCMB4 and was showing 4g lte after reboot. my phone info setting says WCDMA preferred (it shows no LTE option at all ) and the *#2263# menu setting says "automatic". on the fast.t-mobile.com apn
I use UCMD3 and get LTE almost everywhere. Hellybean is a pretty good ROM, try it out!