Develop Bugs

Turning Off UMTS for us S.Floridians T-Mobile

As T-Mobile rolls out their 3G service, it appears 3G HTC phones automatically lock onto the 3G signal (UMTS) which T-Mobile has politely firewalled until they rollout the plans???? So if you have a Kaiser or Hermes in S.Florida you currently have no data access on Edge as the phone defaults to the firewalled UMTS.
SO the question is any of the tech geniuses here know how to switch off UMTS, changing the bands does not help as UMTS, and GSM bands match up (on hermes), switching to a NON- T-mobile frequency also switches the GSM to Non-T-Mobile.
???? Beware if this happened in S.Florida as the network enlarges, you too could be next.!!

By no means am I an expert. But I do know a lot of the cooked roms have an option in the commanager which allows us to turn on/off 3G
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Again, I'm no genius at this(That statement makes my reply a little bit more flame retardant) But I hope that helps. I can't wait until they hit the 3G switch here in Chicago.

Wish it was that simple!
Unfortunately it appears that this may disable the 3G data connection but not the radio. Hence the network still sees a 3G phone and treats it as such. The only way to get around the problem is to actually de-activate UMTS so the network sees an Edge only capable phone. Thanks for the help though!

I'm surprised your phone logs on to the T-Mobile UMTS network. It uses the 2100/1700 MHz AWS band, which no Windows Mobile device supports yet. Are you sure you're logging on to T-Mobile, instead of AT&T Mobility? My phone does that from time to time when reacquiring a signal.
Try forcing your phone to connect to T-Mobile instead of using automatic network selection.

Dumb question, but what if it is detecting the 2100mhz half of the UMTs connection.

I've heard (and I'm pretty sure) that the 2100MHz AWS band that T-Mobile won is different than the standard 2100MHz used worldwide. Plus, I don't think the radio will be able to register on the network anyway if it only has a one-sided conversation with the tower...

kltye said:
I've heard (and I'm pretty sure) that the 2100MHz AWS band that T-Mobile won is different than the standard 2100MHz used worldwide. Plus, I don't think the radio will be able to register on the network anyway if it only has a one-sided conversation with the tower...
Click to expand...
Click to collapse
Yeah, the TMobile uses a combo of 2100mhz and 1700 mhz, while Europe is 2100/1900.
Chances are its picking up the AT&T UMTS network, but you can't roam on it. Are you using a stock ROM? If you're not, go under settings > phone > band (most cooked ones will have this), and change it to strictly GSM. That will lock it to GSM until you change it back.
If you are on a stock ROM, there are various tweaks you can get, I know HermesTweak will let you (yes its old, I stick to cooked ones so I dont know any other standalone ones). Or hell, you could even install Schap's 6 button comm manager as it has the 3g option on there.

[SGH-T989] Samsung Hercules AWS 1700/2100 also offered by Rogers Canada

it's being advertised as Samsung Galaxy S II LTE smartphone
http://www.rogerslte.com/new-lte-devices/smartphone-and-tablet#htctablet
while the Telus version is named 4G Samsung Galaxy S II X which in fact they are both the same phone Samsung Galaxy S II Hercules, or better known as SGH-T989, previously covered in this article http://forum.xda-developers.com/showthread.php?t=1264874
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Spec as per Roger's site:
- AWS for connectivity on the Rogers LTE network
- Tri-band HSPA+/Quad-band EDGE for connectivity on the Rogers 4G HSPA+ network and international roaming
- Dual-core 1.5 GHz processor
- 4.5” WVGA Super AMOLED Plus touchscreen (480x800)
- Android 2.3 operating system
- 1GB RAM; 16GB internal memory
- 8MP rear camera with flash, 2MP front facing camera
- $199.99 with a 3-year hardware discount agreement ($649.99 No-term)

AllGamer said:
it's being advertised as Samsung Galaxy S II LTE smartphone
http://www.rogerslte.com/new-lte-devices/smartphone-and-tablet#htctablet
while the Telus version is named 4G Samsung Galaxy S II X which in fact they are both the same phone Samsung Galaxy S II Hercules, or better known as SGH-T989, previously covered in this article http://forum.xda-developers.com/showthread.php?t=1264874
Spec as per Roger's site:
- AWS for connectivity on the Rogers LTE network
- Tri-band HSPA+/Quad-band EDGE for connectivity on the Rogers 4G HSPA+ network and international roaming
- Dual-core 1.5 GHz processor
- 4.5” WVGA Super AMOLED Plus touchscreen (480x800)
- Android 2.3 operating system
- 1GB RAM; 16GB internal memory
- 8MP rear camera with flash, 2MP front facing camera
- $199.99 with a 3-year hardware discount agreement ($649.99 No-term)
Click to expand...
Click to collapse
If I buy this is there any way to sim unlock it?

The only problem is that this phone probably doesn't support HSPA 1700 band, so can't be used on T-Mobile, Mobilicity, Wind.
Althought it uses AWS, but that's LTE AWS, not HSPA AWS, not the same AWS that T-Mobile/Mobilicity/Wind uses.

and we found out the signal used it's actually different the normal AWS band was 800, and LTE was using the normal AWS bands

AllGamer said:
and we found out the signal used it's actually different the normal AWS band was 800, and LTE was using the normal AWS bands
Click to expand...
Click to collapse
Any idea on how to unlock the SGS2 LTE from Rogers? Is it sim unlockable?
Is it the same as At&T SGS2? or more like the T-mobile SGS2?

as mentioned earlier it's the same Hercules design, just using a different radio
so, yes you can get it SIM unlocked

My understanding is that this phone has:
GSM: quad band
WCDMA: 900, 1900, 2100, (no 1700)
LTE: 800 (AWS)
So it means it can't be used on T-Mobile. Am I right?

get the Telus or Tmobile version if you want to use it on Mobilicity, WIND or the quebec one... forgot name

AllGamer said:
get the Telus or Tmobile version if you want to use it on Mobilicity, WIND or the quebec one... forgot name
Click to expand...
Click to collapse
Videotron in Quebec!
Sent from my SGH-T989D using xda premium

LOL thanks yeah, that's the one i was trying to name

Haha, just goes to show how big a competitor they are to Wind and Mobilicity..

[REQ] Aussie radios

Hey fellow Aussies
I'm hoping some of you on here have recently purchased a Galaxy Nexus with either Optus or Telstra (and soon, Vodafone).
If you have, it would be really helpful to the community if you could post your radios, for us poor people who obtained phones other than from the carriers, and as such have radios that may not be optimised for use in Australia.
I'm hoping somebody can post a way for people to do this if they don't already know how. I know how to do it if you're already rooted, but I'd rather somebody with more knowledge make a post outlining all the options and explaining them concisely.
Thanks in advance
All the other Aussie Galaxy Nexus owners.

I purchased mine from the UK, which has the XXKK1(?) radio in it.
My mate just got his from optus, and it has the same radio in it.
In fact, it is the same phone but packaged with an australian charger.
There is no bloatware, nor seems to be any changes to the firmware or radio at all.
Can't vouch for Telstra - yet. I work for them so I can report back tomorrow with that info but it looks like it will again be the same radio if this one is anything to go by.
I'm using my GN on Telstra, and I'm getting 11 mbps speeds. It really comes down to the network, but yes I also want to get the best out of my radio

You should use a Euro radio for 900/1800 bands eg XXKK1 or XWKK6, and a US radio for 850/1900 bands eg UGKK7 or UGKL1.
Australia uses 900/1800 bands so the euro radio you have is totally fine.

Yeah, I just managed to get somebody who purchased from Optus to post their build.prop, and it seems to be just a European handset.
Here's the build.prop for anyone who's interested.

kam187 said:
You should use a Euro radio for 900/1800 bands eg XXKK1 or XWKK6, and a US radio for 850/1900 bands eg UGKK7 or UGKL1.
Australia uses 900/1800 bands so the euro radio you have is totally fine.
Click to expand...
Click to collapse
Australia uses all the main 3G bands.
Telstra - 850 and sometimes 2100 (being decommissioned)
Optus 900 / 2100 (in dual band format)
Vodafone 2100 but now rolling out an 850 network.
Telstra LTE (4G) is using the 1800 mhz band, which is combined with 850 to fall back on.

Screen shots cause I'm lazy...
Bought mine from handtec, using it on telstra...
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Sent from my Galaxy Nexus using Tapatalk

Getting NextG optimised on Galacy Nexus grey
Telstra Nexus has following specs:
Android Version: 4.0.1
Baseband Version: I9250TDVKK6
Kernel Version: 3.0.1-ga052f63 [email protected] #1
Build Number: ITL41F.I9250TDVKK6
I have the grey with Baseband Version: I9250XXKK1 and my SIM is a Telstra NextG but I think because of diffeent baseband my reception is poor from -80dBm to -110dBm.
Has anyone ane ideas. PS I'm a dreaded android noob.

Theres a radio in the Dev section now, can someone zip it up so I can flash it please?
Having huge reception issues with Telstra atm. Its fine in the city but in regional areas with the 850 Next G band its hopeless!

Telstra user here, I was getting pretty poor performance from XXKK1, I was also getting lock up's where the reception would drop out when the phone slept. I also tried XWKK6 and wasn't having much more luck, but I switched to UGKL1 and not had any real issues since, I feel I get better reception now and less data flow issues.

Can the i927 work on UMTS / 4G from t-mobile?

Hi,
I've read that the 3 umts bands on specs are 850, 1900 and 2100
And that T-mobile works on 1700 and 2100
But does it actually works on umts? Does anyone have any experience with this on 4g from tmobile?
Sent from my GT-P7510 using xda premium

The only sim I've got is from t-mobile. Now I own this unlocked captivate glide which I love, but I'm not sure if it will work.

I think unlocked phones can only get "edge" network

justjeff said:
I think unlocked phones can only get "edge" network
Click to expand...
Click to collapse
nothing like that.. unlocking does not make a difference with phone's capabilities and frequencies.. once again check the frequent of T-Mobile..
i am using 3g Frequency with unlocked phone
Sent from my SAMSUNG-SGH-I927R using XDA

Funny enough, I just got back from NY and used my (Rogers) unlocked glide on T-Mobile's network. It was, sad to say, edge-only. It's fine for short trips but I'd recommend AT&T if you're staying down there a while.

This is my 3G status with an AT&T unlocked SCG.
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incidentflux said:
This is my 3G status with an AT&T unlocked SCG.
--enormous pic removed--
Click to expand...
Click to collapse
Good thing the OP wasn't asking about 4G/UMTS
Oh wait, yes, yes, he was.
Long Story Short: No 4G for you - no 1700 antenna = no 4G
L4T

Lookin4Trouble said:
no 1700 antenna = no 4G
Click to expand...
Click to collapse
Are you sure there's no 1700 antenna?
1. *#*#197328640#*#*
2. Select [1] Debug Screen
3. Select [8] Phone control
4. Select [7] Network control
5. Select [2] Band Selection
6. Select [4] Combi Bands []
it lists WCDMA 1700(FDD IV)
but enabling it doesn't work...
on HTC there used to be different radio firmware, are there any available for Glide?

From something I remember reading not long ago, most of the radio controller chips in high end phones are capable of the 8 primary umts bands. The problem is in the antenna and frequency filters in the phone. Doesn't matter how capable the radio is if it doesn't have a way of getting the data in or out.

What app did u use to get those stats (via screenshot u posted)
Sent from my SGH-I927 using xda premium

LTE on T-Mobile question

Does this phone get LTE on T-Mobile and if so how can I tell if I'm getting it? I get H+/4G/DC data icons depending on the ROM but the fastest down/up speeds I get ever is 14mbps/2mbps 99% of the time I'm getting 5 down/1 up with full bars the T-Mobile coverage map shows my entire area Dallas, TX with high speed Internet. Am I not getting LTE? I see people posting 25+ speeds I have never achieved anything near that.

xBkKx said:
Does this phone get LTE on T-Mobile and if so how can I tell if I'm getting it? I get H+/4G/DC data icons depending on the ROM but the fastest down/up speeds I get ever is 14mbps/2mbps 99% of the time I'm getting 5 down/1 up with full bars the T-Mobile coverage map shows my entire area Dallas, TX with high speed Internet. Am I not getting LTE? I see people posting 25+ speeds I have never achieved anything near that.
Click to expand...
Click to collapse
I am using ATT phone on T Mobile and I can get LTE without any issue. Based on your speed, it appears to me that you are getting HSPA+ speed. Have you checked your APN to make sure you set it as fast.t-mobile.com (or make sure you set what T Mobile recommends: http://support.t-mobile.com/docs/DOC-10361)

Yes my APN is the T-Mobile US LTE, my speeds are no different with the fast.t-mobile.com APN or the epc.tmobile.com APN. If I set my APN identical to that link it just switches back it won't let me use those settings. Does this mean I don't get LTE when phone first boots it doesn't get data for awhile and shows this
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If you compare:
http://en.wikipedia.org/wiki/AT&T_Mobility
LTE bands:
700 MHz Block B 17 LTE 4G Active Main LTE band providing complete coverage
1700 MHz AWS 4 LTE 4G Active Additional LTE band for more bandwidth in select markets
1900 MHz PCS 2 LTE 4G Active Additional LTE band for more bandwidth in select markets[31]
2300 MHz WCS 30 LTE 4G Active[32]
and
http://en.wikipedia.org/wiki/T-Mobile_US
1700/2100 MHz AWS 4 LTE 4G In Service/Building out Covers 230 million POPs as of July, 2014 [78][79]
700 MHz Block A 12 LTE 4G A-block rollout has begun Spectrum acquired from Verizon Wireless [80]
1900 MHz PCS 2 LTE 4G On air [81]
And the AT&T GN2 (i317) supports Band 2 and 17, so it makes sense that you could get LTE on both networks.
http://en.wikipedia.org/wiki/Samsung_Galaxy_Note_II