Develop Bugs

[Q] Using T-Mobile Galaxy Note 2 on AT&T's LTE (Will It Work if I do the Following?)

[Q] Using T-Mobile Galaxy Note 2 on AT&T's LTE (Will It Work if I do the Following?)
Can't you flash an AT&T firmware on a T-Mobile Samsung Galaxy Note 2 handset to get the necessary AT&T LTE Frequencies since the LTE radios on both AT&T's and T-Mobile's Note 2's are the exact same? Or is unlocking the Note 2 via T-Mobile more than enough to take advantage of AT&T's LTE Network?

Tread carefully, I'm currently trying to get my phone out of a rather nasty bootloop/corrupt IMEI situation after trying just that earlier today.
But I did get it to work, even pulled 35 Mbps on a speedtest.
Things went to hell after trying to revert back to the T889V modem. (In case I needed the AWS HSPA, for proof of concept and also warranty purposes).

so our phone's LTE modem is compatible with AT&T LTE bands? sweet.

^^^ Did an LTE status show up when you ran the Speedtest; this was with an AT&T Sim, right? ?

^^^ Did an LTE status show up when you ran the Speedtest; this was with an AT&T Sim, right? ?
Darkshado said:
Tread carefully, I'm currently trying to get my phone out of a rather nasty bootloop/corrupt IMEI situation after trying just that earlier today.
But I did get it to work, even pulled 35 Mbps on a speedtest.
Things went to hell after trying to revert back to the T889V modem. (In case I needed the AWS HSPA, for proof of concept and also warranty purposes).
Click to expand...
Click to collapse

Virgin Mobile Canada LTE SIM (previously confirmed working in an Galaxy S III), and yes the LTE icon showed up immediately, Speedtest says LTE too, and the speeds are way beyond what I had with HSPA in the same location.

Doesn't AT&T's LTE run on different frequencies; so will T-Mobile's Note 2 match with AT&T LTE Frequencies after flashing to AT&T's Firmware?
Darkshado said:
Virgin Mobile Canada LTE SIM (previously confirmed working in an Galaxy S III), and yes the LTE icon showed up immediately, Speedtest says LTE too, and the speeds are way beyond what I had with HSPA in the same location.
Click to expand...
Click to collapse

winlinmac001 said:
Doesn't AT&T's LTE run on different frequencies; so will T-Mobile's Note 2 match with AT&T LTE Frequencies after flashing to AT&T's Firmware?
Click to expand...
Click to collapse
Tmobile's T889 supports LTE on AWS and 700 (band 17).
AT&T's i317 supports LTE on AWS, 700 (band 17) and also on 850 and 1900 (band 2).
So yes, our phone has the ability to work on SOME of AT&T's LTE network, but not all of it; it will just depend on which frequencies they're using in your area. I believe AWS and 700 are new for AT&T, so they're probably fewer and more between at the moment, whereas their current network is mostly 1900 and 850. Not sure what kind of upgrade they have to do to switch their old HSPA 1900 towers to LTE support.

Silly question, so is a tmobile note 2 capable of handling AT&T's LTE network on the 850 and 1900 bands; is this something controlled by software, or a hardware limitation, I thought the Qualcomm radios on the AT&T variant and tmobile variant were the same.
distortedloop said:
Tmobile's T889 supports LTE on AWS and 700 (band 17).
AT&T's i317 supports LTE on AWS, 700 (band 17) and also on 850 and 1900 (band 2).
So yes, our phone has the ability to work on SOME of AT&T's LTE network, but not all of it; it will just depend on which frequencies they're using in your area. I believe AWS and 700 are new for AT&T, so they're probably fewer and more between at the moment, whereas their current network is mostly 1900 and 850. Not sure what kind of upgrade they have to do to switch their old HSPA 1900 towers to LTE support.
Click to expand...
Click to collapse

[Q] Should I get ATT or TMobile GS3

So I am looking to switch to T-Mobile from sprint and want to get the S3. I understand the T-Mobile GS3 works on HSPA+ and operates on the 1700 Band. I also see that the T-Mobile version does not have LTE. Now the ATT version operates on the 1900 Band and will only work on slower speeds until T-Mobile activates the 1900 Band here. Spoke to several reps and they state sometime this month. Will the ATT GS3 have the LTE that will work on T-Mobile when they activate it? So would it be better for me to get an ATT GS3 so that I have LTE when it becomes available? Thanks in advanced

mastercpt said:
So I am looking to switch to T-Mobile from sprint and want to get the S3. I understand the T-Mobile GS3 works on HSPA+ and operates on the 1700 Band. I also see that the T-Mobile version does not have LTE. Now the ATT version operates on the 1900 Band and will only work on slower speeds until T-Mobile activates the 1900 Band here. Spoke to several reps and they state sometime this month. Will the ATT GS3 have the LTE that will work on T-Mobile when they activate it? So would it be better for me to get an ATT GS3 so that I have LTE when it becomes available? Thanks in advanced
Click to expand...
Click to collapse
I have Tmobile and it works ok, It depends on the service coverage cause where I live I don't get 4G on any carrier lol.

That's a tough question to answer. Is it a matter of want or need LTE on your mobile device?
Arguably, at&t has better service than t mobile. But since t mobile is still at the stage of refarming their antennas/towers, Tmo could be just the same as their counterpart after its done. I have t mobile and coverage has been excellent. Data speeds are speedy but not quite as fast as at&t's LTE.
On HSPA+, i get great to decent speeds that can get all of my mobile needs online. It would be a plus to have LTE but i don't need it.
Do you get what i trying to get at?
Sorry i had to write this quickly.
Sent from my Nexus 4 using xda app-developers app

mastercpt said:
So I am looking to switch to T-Mobile from sprint and want to get the S3. I understand the T-Mobile GS3 works on HSPA+ and operates on the 1700 Band. I also see that the T-Mobile version does not have LTE. Now the ATT version operates on the 1900 Band and will only work on slower speeds until T-Mobile activates the 1900 Band here. Spoke to several reps and they state sometime this month. Will the ATT GS3 have the LTE that will work on T-Mobile when they activate it? So would it be better for me to get an ATT GS3 so that I have LTE when it becomes available? Thanks in advanced
Click to expand...
Click to collapse
I say go for the Tmobile S3. T-mobile's LTE rollout won't be for a long while, and even when it does become available we don't know if it uses the same LTE band as ATT. My guess is that it won't. Tmobile's HSPA+ is plenty fast where I live for all my needs. You will only get EDGE (2G) speeds with TMobile on the ATT version of the S3 until Tmobile refarms their network. But even if they do refarm where you live by the end of the month, the many other places will still only be covered with the 1700 spectrum.

S3 on Edge is a pointless phone. Even with the 1900 mhz bands rolling out, your data will be spotty at BEST. Even in NYC Manhattan, the 1900 mhz bands are probably 20% complete. Go with the TMO version and you won't regret it.

I get up to 25mbps I average about 7-12 who cares about LTE? Go with T-Mo its cheaper and you will get faster speeds. At my home I get faster data speeds than my baby mama on ATT with her HoX soon to be OG Note
sent from my Samsung Gangster S III on the T-Mobile network

I also have the same dilemma.
If T-Mobile will use LTE on the same frequency as ATT currently does, won't using the ATT SGS3 future proof it for LTE on T-Mobile network?
Am I missing something or do these devices have same specs (except T-Mo having 1700) once 3G moves to 1900 on T-Mo?
OP, I suggest you test T-Mo's network for coverage and speed in your area. I will be doing the same.

Get the T-Mobile version if you value fast data speed.
Don't buy a phone and hoping that it will have the correct technology to work on a network that has not even start to build yet.
Sent from my SGH-T999 using Tapatalk 2

Anybody got T-mobile?

What's up guys. Really thinking of pulling the trigger on the N5100 from eBay or negrielectronics.
But, my question is how well will my data/voice coverage be on T-mobile? I know the phablet uses the 1900Mhz spectrum.
I also know T-Mobile has some 1900Mhz spectrum but I've been wondering about My hometown of ATL, GA.
Anybody here in the ATL metro area? How's your coverage? I'd hate to drop $500+ for a device I can't really use.

I cant remember where I read it but I think that data will only be edge. I hope somebody corrects me if Im wrong but I might wanna wait and see what the new LTE model has in store.

apollostees said:
What's up guys. Really thinking of pulling the trigger on the N5100 from eBay or negrielectronics.
But, my question is how well will my data/voice coverage be on T-mobile? I know the phablet uses the 1900Mhz spectrum.
I also know T-Mobile has some 1900Mhz spectrum but I've been wondering about My hometown of ATL, GA.
Anybody here in the ATL metro area? How's your coverage? I'd hate to drop $500+ for a device I can't really use.
Click to expand...
Click to collapse
You will likely be restricted to 2G(edge) only. The N5100 supports the 1900mhz frequency, but not the 1700mhz. Support for both are required for 3G/HSPA+ service on T-Mobile.

unremarked said:
You will likely be restricted to 2G(edge) only. The N5100 supports the 1900mhz frequency, but not the 1700mhz. Support for both are required for 3G/HSPA+ service on T-Mobile.
Click to expand...
Click to collapse
Thanks for the verification! Haha I remember that guy in yur sig from the HTC One forums. Craziness!

unremarked said:
You will likely be restricted to 2G(edge) only. The N5100 supports the 1900mhz frequency, but not the 1700mhz. Support for both are required for 3G/HSPA+ service on T-Mobile.
Click to expand...
Click to collapse
Not exactly true! TMo US has historically used the split 1700/2100 AWS band for 3G, meaning a device needs to support both bands for 3G access. However, since TMo got hold of some spectrum at 1900MHz from AT&T, they've been re farming to provision 3G over that band.
What this means is if you have a device that supports 1900MHz *and* you are in an area where TMo has re farmed the spectrum, you should get 3G.
Regards,
Dave
Sent from my GT-N5110 using Tapatalk HD

foxmeister said:
Not exactly true! TMo US has historically used the split 1700/2100 AWS band for 3G, meaning a device needs to support both bands for 3G access. However, since TMo got hold of some spectrum at 1900MHz from AT&T, they've been re farming to provision 3G over that band.
What this means is if you have a device that supports 1900MHz *and* you are in an area where TMo has re farmed the spectrum, you should get 3G.
Regards,
Dave
Sent from my GT-N5110 using Tapatalk HD
Click to expand...
Click to collapse
Sort of. It's not so much that TMobile got a hold of the spectrum from AT&T as much as they've always had it, but it was only used for GSM(aka EDGE aka 2G) service. Yes, they quite a bit from that failed merger which had sped their plans along quite nicely. You're right that the y're refarming/repurposing that frequency for use on their faster data networks but... correct me if I'm wrong, my understanding is that the refarming is being done to support LTE? As the 5110 lacks an LTE antennae, it won't be able to make use of it.
OP, to find out if you're in an area where this refarming is being done check out this website.

[Q] I9500 S4 on American Tmobile Network with missing 1700 Frequency

I live in America and was thinking about ordering the S4 GT-i9500 for Wolfson Audio chip reason. I wanted to use Tmobile because they have the best prices. I saw that the i9500 network is:
Network: 2.5G (GSM/ GPRS/ EDGE): 850 / 900 / 1800 / 1900 MHz; 3G (HSPA+ 42Mbps): 850 / 900 / 1900 / 2100 MHz
And from https://en.wikipedia.org/wiki/T-Mobile_US#HSPA.2FHSPA.2B_.224G.22_upgrade, I see that HSPA+ uses 1700/2100 Mhz. It also saids:
Band IV AWS consists of the 1700 / 2100 MHz band pair. Data is transmitted upstream on 1700 MHz and downstream on 2100 MHz. A device must support both frequencies to access T-Mobile's AWS data services.
I don't understand, but sellers on ebay are claiming i9500 will work with Tmobile's 4G in America. How would the i9500 work on the American Tmobile network if it doesn't use the 1700 frequency? What would be the draw back?

Tmobile is refarming its 1900Mhz band for hspa+. If you're in an area that has it you could get 4G with that and pretty good speeds. You won't get LTE and if you're in an area without the 1900 you'll get 2g speeds.

Here's a more technical explanation.
T-Mobile used to exclusively use the AWS (1700/2100) spectrum for DC-HSPA+42mbps. They are currently refarming this for LTE use.
HSPA+21mbps is being moved to the 1900mhz spectrum. So, in areas that have been refarmed, you will have HSPA+ access (NOTE, no 42mbps). In areas that are not refarmed, you'll be limited to EDGE service.
I have a Galaxy S2 GT-i9100, so I have the same limitation. I signed up with T-Mobile about 2 months ago and on a weekly basis, I'm seeing towers refarmed. They intend to have it nearly completed by end of 2013, thus limiting the areas you'll be on Edge only. Eventually, their entire 1900mhz network will be HSPA+ 21, with their AWS network being LTE.

jaykresge said:
Here's a more technical explanation.
...you will have HSPA+ access (NOTE, no 42mbps).
Click to expand...
Click to collapse
If not 42mbps, what speed?

dman777 said:
If not 42mbps, what speed?
Click to expand...
Click to collapse
Their HSPA+ network on 1900mhz is limited to 21mbps.
Basically, their network prior to refarming was:
1900mhz (PCS) - EDGE
1700/2100mhz (AWS) - DC-HSPA+ 42mbps
They have since acquired a TON of PCS and AWS spectrum from; failed AT&T merger, Verizon spectrum swap, and MetroPCS merger.
This will allow them to expand to new markets currently not served, as well as expand bandwidth in existing markets. So, their current plans are to refarm the network to;
1900mhz (PCS) - HSPA+ 21mbps
1700/2100mhz (AWS) - LTE
There will be some limited spectrum for the old EDGE (PCS) and DC-HSPA+ 42 (AWS) available for legacy devices, but that will eventually (at least 2020, most likely) go away. The goal is to have LTE over their core network by mid-2014, and HSPA+ 21mbps being the expanded fallback network. T-Mobile will also be taking part in the 600mhz auction in mid-2014. Their network plans will be made more clear (VoLTE, LTE-A) after that auction. Lower frequencies allow for better building penetration. T-Mobile is currently silently lobbying the FCC (through other groups) to remove Verizon and AT&T from that spectrum auction for the sake of competition.

jaykresge said:
Here's a more technical explanation.
T-Mobile used to exclusively use the AWS (1700/2100) spectrum for DC-HSPA+42mbps. They are currently refarming this for LTE use.
HSPA+21mbps is being moved to the 1900mhz spectrum. So, in areas that have been refarmed, you will have HSPA+ access (NOTE, no 42mbps). In areas that are not refarmed, you'll be limited to EDGE service.
I have a Galaxy S2 GT-i9100, so I have the same limitation. I signed up with T-Mobile about 2 months ago and on a weekly basis, I'm seeing towers refarmed. They intend to have it nearly completed by end of 2013, thus limiting the areas you'll be on Edge only. Eventually, their entire 1900mhz network will be HSPA+ 21, with their AWS network being LTE.
Click to expand...
Click to collapse
so eventually you'll be able to access the 21mb range? Thus, if in a refarmed area, you could get 21mb with a i9500?

For explanatory purposes: Ever noticed how, if connected to a 100mbps LAN, you don't ever see 100mbps? That's link speed, not real world.
Applied here, HSPA+ has a top link speed of 21mbps (assuming both ends are compatible). DC-HSDPA has a top link speed of 42mbps. Real world performance will be 3-8mbps on the former, and 5-15mbps on the latter. I've seen spikes up around 12mbps and 25mbps, but those are incredibly rare. Bottom line is, do not expect LTE speeds. I currently have a phone that has 21mbps HSPA support on PCS (1900mhz), and on T-Mobile, I get 6-7mbps in most HSPA areas.
I hope that helps.

Im getting 20-30 m.b.p.s. dwn anf 10-15 m.b.p.s. up Lte.
Sent from my SGH-M919 using xda app-developers app

rp56 said:
Im getting 20-30 m.b.p.s. dwn anf 10-15 m.b.p.s. up Lte.
Sent from my SGH-M919 using xda app-developers app
Click to expand...
Click to collapse
Shouldn't it be more? Are you using the Snapdragon version on the American Tmobile network?

jaykresge said:
For explanatory purposes: Ever noticed how, if connected to a 100mbps LAN, you don't ever see 100mbps? That's link speed, not real world.
Applied here, HSPA+ has a top link speed of 21mbps (assuming both ends are compatible). DC-HSDPA has a top link speed of 42mbps. Real world performance will be 3-8mbps on the former, and 5-15mbps on the latter. I've seen spikes up around 12mbps and 25mbps, but those are incredibly rare. Bottom line is, do not expect LTE speeds. I currently have a phone that has 21mbps HSPA support on PCS (1900mhz), and on T-Mobile, I get 6-7mbps in most HSPA areas.
I hope that helps.
Click to expand...
Click to collapse
Wow, kind of considering the I9500 again. I live in Austin, Texas. How will I know if Tmobile converted here and if I can get the 6-7mpbs in HSPA where ever I am here? Also, right now I have a Nexus S with 3G. I have to admit that I only am able to get 3G(Tmobile) about 50% of the time and the rest is edge speed. Would HSPA consistency be this bad?

dman777 said:
Wow, kind of considering the I9500 again. I live in Austin, Texas. How will I know if Tmobile converted here and if I can get the 6-7mpbs in HSPA where ever I am here? Also, right now I have a Nexus S with 3G. I have to admit that I only am able to get 3G(Tmobile) about 50% of the time and the rest is edge speed. Would HSPA consistency be this bad?
Click to expand...
Click to collapse
If you got the Nexus S model sold for T-Mobile, that has AWS support. That means that switching to a PCS 3G phone like the i9500 means that AT BEST you will have the same Edge/3G coverage ratio you have now, and at worse you'll have mostly Edge coverage. Your 3G data speeds will be faster in the areas you get it though. It will be a tradeoff.
EDIT: Here's a user-generated map of areas that have had 3G and HSPA+ refarmed to PCS. Looks like a few rowers directly in Austin have been refarmed. This is a massive project by T-Mobile and is nowhere near being complete. However, an areas HAS to be refarmed in order for them to launch LTE, so refarmed markets (that already offered 3G/4G AWS service) are the ones that are getting LTE eventually.
http://www.airportal.de/

Signal drop and only Edge speeds with Cricket Wireless

I have Cricket Wireless and I can only seem to get Edge speeds on my m7vzw.
What's weird is I have previously put a different Cricket SIM in the phone before the device was switched from Verizon to Cricket and I got H+.
The band frequency charts would suggest that I should get at least H+.
I'm using the ROM below:
http://forum.xda-developers.com/showthread.php?t=2531235
I tried the Google Edition radio, just left me with no signal.
After that didn't get me anywhere I flashed m7vzw_5.28.605.2_1.13.41.0702_Radio, which gave me back the weak Edge signal again.
LTE/H+ was working fine before I ported from Verizon.
I don't know what Firmware the device is on, or how to check.
Any thoughts?

I do not know how you got H+ before, maybe it was a Cricket SIM before AT&T took over and was a Sprint one? That wouldn't make sense though as Sprint doesn't use SIM cards. Below is the official specs for the Verizon one. AT&T only supports 850/1900 H+ which our phone does not support. I do not know why you are getting bad edge reception though.
Verizon: 800/1900MHZ, UMTS/HSPA 900/2100MHz,GSM/GPRS/EDGE 850/900/1800/1900MHz, LTE 700MHz (Band 13)
http://www.htc.com/us/smartphones/htc-one-m7/
"We currently use frequencies in the 1900 MHz and 850 MHz ranges, although we have licenses to operate in other ranges."
http://www.att.com/gen/press-room?pid=14003
AT&T bought out Leap Wireless (Cricket) a few years ago, so that is whose towers you are connecting through.
My only thought is maybe you live in a refarmed T-Mobile area and the phone roamed you to H+?
Sent from my HTC6500LVW using XDA Free mobile app

Uzephi said:
I do not know how you got H+ before, maybe it was a Cricket SIM before AT&T took over and was a Sprint one? That wouldn't make sense though as Sprint doesn't use SIM cards. Below is the official specs for the Verizon one. AT&T only supports 850/1900 H+ which our phone does not support. I do not know why you are getting bad edge reception though.
Verizon: 800/1900MHZ, UMTS/HSPA 900/2100MHz,GSM/GPRS/EDGE 850/900/1800/1900MHz, LTE 700MHz (Band 13)
http://www.htc.com/us/smartphones/htc-one-m7/
"We currently use frequencies in the 1900 MHz and 850 MHz ranges, although we have licenses to operate in other ranges."
http://www.att.com/gen/press-room?pid=14003
AT&T bought out Leap Wireless (Cricket) a few years ago, so that is whose towers you are connecting through.
My only thought is maybe you live in a refarmed T-Mobile area and the phone roamed you to H+?
Sent from my HTC6500LVW using XDA Free mobile app
Click to expand...
Click to collapse
It might of been 3G and not H+ to be honest. I just know it wasn't Edge. I do still have the same SIM I tested with before, and it also only produces Edge while in the HTC One. When I previously tested for service the phone was active with Verizon, but with a Cricket SIM for the test. I performed this test about 5-6 weeks ago.
Sounds like I did everything I could on my end though. I might have to explore other phone or carrier options.

vpxf said:
It might of been 3G and not H+ to be honest. I just know it wasn't Edge. I do still have the same SIM I tested with before, and it also only produces Edge while in the HTC One. When I previously tested for service the phone was active with Verizon, but with a Cricket SIM for the test. I performed this test about 5-6 weeks ago.
Sounds like I did everything I could on my end though. I might have to explore other phone or carrier options.
Click to expand...
Click to collapse
I do know cricket is starting to drop support on Sprint towers and by March of this year their phones will not reach Sprint towers. You might have still had some towers that were Sprint in your area a few weeks ago that finally don't work on Cricket anymore and you got forced to AT&T. It would be the only logical situation.