Database Users

No 3g :(

gents,
i have an unlocked MyTouch, but i'm using it on russian Beeline network and i get no 3G. GPRS works fine and 3g icon showed up ones when i was setting up GPRS, but it never since came up.
I know for sure that provider supports it. Any thing I can do?
is there a way to check locked status of the phone?
thanks

dialbat said:
gents,
i have an unlocked MyTouch, but i'm using it on russian Beeline network and i get no 3G. GPRS works fine and 3g icon showed up ones when i was setting up GPRS, but it never since came up.
I know for sure that provider supports it. Any thing I can do?
is there a way to check locked status of the phone?
thanks
Click to expand...
Click to collapse
Are you sure the network uses the same 3G frequencies as t-mobile? There are different sets of frequencies for 3G. For example, the ones t-mobile uses are different than most US providers.
If it works on your network at all then the phone is indeed unlocked.

is it possible to tweak with frequencies maybe at the rom level or are they hard coded?

dialbat said:
is it possible to tweak with frequencies maybe at the rom level or are they hard coded?
Click to expand...
Click to collapse
It is most likely the radio can not transmit at any other frequencies (hardware limitation). Even if it were possible, you would need to be able modify the radio firmware to make it happen.

happy thoughts, happy thoughts, happy thoughts.....
thanks

Unfortunately you won't be able to get 3G outside of T-Mobile as I am pretty sure no other company uses 1700/2100 for 3G, even outside the US.

stoneyjonez said:
Unfortunately you won't be able to get 3G outside of T-Mobile as I am pretty sure no other company uses 1700/2100 for 3G, even outside the US.
Click to expand...
Click to collapse
Actually, i'm using it on a regional US carrier that uses the same frequency, and at least one provider in Canada uses it as well. I would guess there may be a few others.
Edit: WIND Mobile, Mobilicity, and Videotron in Canada use the same as t-mobile.

Well since your not using tmobile as the provider your problem is you don't have the correct apn settings for your provider you can google them or ask your provider for the apn settings.
Sent from my T-Mobile myTouch 3G Slide using XDA App

no, my GPRS works fine, it's 3G i was talking about.

Are you sure your provider uses the same spectrum as tmobile it goes from 1700-1799/2100-2199 that's a broad spectrum if you know what I mean.
Sent from my T-Mobile myTouch 3G Slide using XDA App

Well, they probably don't, but as was mentioned by falken98, it is possible to modify radio firmware to make it work for other 3G provider.
Do guys here in development do that kind of mods?

It doesn't have to do with the firmware its hardcoded on the chip.
Sent from my T-Mobile myTouch 3G Slide using XDA App

Arc not 3G compatible in US?

Hello,
Maybe you guys can help me clarify something for me. I want to buy this phone and get the unlocked version. Only problem is no matter which seller I'm looking at on Ebay they're all saying "3G Not compatible in the U.S" which means I'll be running at 2G and I actually considered this ok because i really want to this phone. But I want to know why it won't work? If it's a GSM phone and it would work with AT&T & T-Mobile my local carriers why wouldn't it give me 3G speeds?
I really want this phone because I wanted something different, something you won't see out here much. Plus I wanted to get back to Sony phones after playing with other manufactors. Can anyone help clear this is up for me?

Nishua said:
But I want to know why it won't work? If it's a GSM phone and it would work with AT&T & T-Mobile my local carriers why wouldn't it give me 3G speeds?
Click to expand...
Click to collapse
For the same reason that a T-Mobile US GSM handset won't give you 3G on AT&T - it's the wrong frequency.
Most of the world uses the 2100MHz band for UMTS/HSDPA but AT&T are awkward and use 1900MHz and 850MHz and T-Mobile are even more awkward and use the extremely unusual 1700MHz band.

Nishua said:
Hello,
Maybe you guys can help me clarify something for me. I want to buy this phone and get the unlocked version. Only problem is no matter which seller I'm looking at on Ebay they're all saying "3G Not compatible in the U.S" which means I'll be running at 2G and I actually considered this ok because i really want to this phone. But I want to know why it won't work? If it's a GSM phone and it would work with AT&T & T-Mobile my local carriers why wouldn't it give me 3G speeds?
I really want this phone because I wanted something different, something you won't see out here much. Plus I wanted to get back to Sony phones after playing with other manufactors. Can anyone help clear this is up for me?
Click to expand...
Click to collapse
LT15i = T-Mobile 3G bands
LT15a = AT&T 3G bands

augie7107 said:
LT15i = T-Mobile 3G bands
Click to expand...
Click to collapse
No, the LT15i doesn't support the AWS (1700MHz) band so it won't support T-Mobile US's 3G service.

Step666 said:
No, the LT15i doesn't support the AWS (1700MHz) band so it won't support T-Mobile US's 3G service.
Click to expand...
Click to collapse
T-Mobile also uses 2100

Hmm I thought that tmobile U. S used the same 3G bands as europe. So in theory it should work right?
Sent from my GT-I9000 using XDA Premium App

augie7107 said:
T-Mobile also uses 2100
Click to expand...
Click to collapse
No they don't.
T-Mobile's 3G uses a ~1700MHz frequency to upload and a ~2100MHz frequency to download, this is the '1700MHz band', also referred to as 'AWS' or 'UMTS band IV'.
Compare this to the '2100MHz band' ( or 'UMTS band I') which uses a frequency of ~1900MHz to upload and a frequency of ~2100MHz to download. The two are not cross-compatible.
The LT15i supports the 2100MHz band but not the 1700MHz band, so no 3G on T-Mobile.
If you don't believe me, feel free to read this thread on T-Mobile US's own site.
People with handsets that only support the 2100MHz band don't get 3G service.
Hero Yu said:
Hmm I thought that tmobile U. S used the same 3G bands as europe.
Click to expand...
Click to collapse
They don't.

[No they don't.
T-Mobile's 3G uses a ~1700MHz frequency to upload and a ~2100MHz frequency to download, this is the '1700MHz band', also referred to as 'AWS' or 'UMTS band IV'.]
Thanks for the detailed explanation.
You obviously know more about this than I do.
I do believe your first two statements are contradictory.
You state "no they don't" and then go on to say "they use a 2100 to download"
All other SE "I" version phones work with T-Mobile 3G, correct?

augie7107 said:
[No they don't.
T-Mobile's 3G uses a ~1700MHz frequency to upload and a ~2100MHz frequency to download, this is the '1700MHz band', also referred to as 'AWS' or 'UMTS band IV'.]
Thanks for the detailed explanation.
You obviously know more about this than I do.
I do believe your first two statements are contradictory.
You state "no they don't" and then go on to say "they use a 2100 to download"
All other SE "I" version phones work with T-Mobile 3G, correct?
Click to expand...
Click to collapse
They never make anything the same. They may work or they may not. You should pay attention to every details of any product you are buying, no general rules existing with any product specially gadgets which they get a new technology everyday.

augie7107 said:
I do believe your first two statements are contradictory.
Click to expand...
Click to collapse
I can see why you might think that but it's not contradictory because band and frequency are not the same.
If we look at the specs for the Arc, it says says '3G Network HSDPA 900 / 2100' (that's the LT15i, the line below is the frequencies supported by the LT15a).
Those numbers refer to UMTS bands I and VIII as listed here.
As you can see from the page on Wikipedia, every band operates on two different frequencies, one for uploading and one for downloading. This is to avoid interference.
So even though the download frequencies of the 1700 band and the 2100 band are the same, the two bands are not compatible as the upload frequencies are different (sorry for all the underlining, it just makes it easier to explain...).
It would be a lot simpler if each band's upload and download frequencies were distinct, it would be far less confusing but I guess there's some sort of reason why things are the way they are...
augie7107 said:
All other SE "I" version phones work with T-Mobile 3G, correct?
Click to expand...
Click to collapse
I don't think so, not unless they say they support the 1700/AWS band.
Basically, unless a phone's specs say it supports 1700MHz for 3G (or mentions AWS support, which means the same thing), it should be assumed that it won't give you 3G on T-Mobile US.
Though this all starts to become even more confusing when local roaming agreements are factored in but I don't really know anything about that to be honest.

Nishua said:
Hello,
Maybe you guys can help me clarify something for me. I want to buy this phone and get the unlocked version. Only problem is no matter which seller I'm looking at on Ebay they're all saying "3G Not compatible in the U.S" which means I'll be running at 2G and I actually considered this ok because i really want to this phone. But I want to know why it won't work? If it's a GSM phone and it would work with AT&T & T-Mobile my local carriers why wouldn't it give me 3G speeds?
I really want this phone because I wanted something different, something you won't see out here much. Plus I wanted to get back to Sony phones after playing with other manufactors. Can anyone help clear this is up for me?
Click to expand...
Click to collapse
In short:
LT15i: 2G will work just fine on both AT&T and T-Mobile. 3G will NOT work on either network.
LT15a: 2G will work just fine on both AT&T and T-Mobile. 3G will ONLY work with AT&T.

so my concerns is..if i am using T Mobile right now...it means I am doomed right? Even the new T mobile 4G(whatever they wanna call it) wont get me the right internet speed to blast the phone?

felixlaw11114 said:
so my concerns is..if i am using T Mobile right now...it means I am doomed right? Even the new T mobile 4G(whatever they wanna call it) wont get me the right internet speed to blast the phone?
Click to expand...
Click to collapse
att bought tmobile couple of weeks back , so ask if they are sharing the 3G frequencies now

alsaqr said:
att bought tmobile couple of weeks back , so ask if they are sharing the 3G frequencies now
Click to expand...
Click to collapse
I am not sure that went completely though. It is still hanging with no solution...

Nimche said:
I am not sure that went completely though. It is still hanging with no solution...
Click to expand...
Click to collapse
if i assume they are not sharing frequency..the only way for me to enjoy 3G/4G internet is to use AT&T?

felixlaw11114 said:
so my concerns is..if i am using T Mobile right now...it means I am doomed right? Even the new T mobile 4G(whatever they wanna call it) wont get me the right internet speed to blast the phone?
Click to expand...
Click to collapse
'4G' has nothing to do with any of this - that's just speed, it doesn't change which band T-Mobile use.
alsaqr said:
att bought tmobile couple of weeks back , so ask if they are sharing the 3G frequencies now
Click to expand...
Click to collapse
They're not.
The merger hasn't even been approved yet, let alone any sort of migration of customers.
If the merger is approved, you're talking anywhere from 1 year to 3 before you see any real-world differences like the ones you're suggesting.

...um...I am doom-ed then..
I read their press and their said the deal wont close until the end of the year

Assuming the regulators allow it to go ahead at all.
There are, rightly so, concerns about a single national GSM-based network and the knock-on effect that would have on competition.

seems like I got a smart phone that not gonna be that smart

augie7107 said:
T-Mobile also uses 2100
Click to expand...
Click to collapse
tmo uses 1700 downlink and 2100 uplink. phone must support both freqs to get 3G. LT15i does not support 1700, hence 3G will not work.

[Q] 4g speed on at&t phone.

Hello everyone
i just bought a brand new samsung infuse locked to at&t. I got it unlocked to use it with tmobile.i am currently using mytouch4g. i am able to use infuse after unlocking with tmobile but can not get 4g data speed on infuse.it only gives me EDGE speed
is there any setting out here that i can use that will give me 4g speed on samsung infuse using tmobile sim just like i get with mytouch4g. and i want to use it with tmobile USA.
please help
thanks in advance

No reply to help me. Please guys id anyone have any answer this .
I would really appricate this.
Sent from my HTC Glacier using Tapatalk

EDGE is 4G on AT&T. just kidding
I would check what you have it set to under phone options, dail *#*#4636#*#*, and check what band you have selected, as well as correct APN settings.

ATT's 4G bands are not the same at T-Mobile's 4G bands. Wont work no way no how.

@ chris it says gsm/wcdma auto(prl)
Sent from my HTC Glacier using Tapatalk

AT&T is using 1900 MHz (850 MHz in some markets) for 3G. T-Mobile will use 1700 MHz for download and 2100 MHz for upload or pretend I didn't say anything and keep trying something that isn't doable. that's your call

like jay says it doesn't have the correct network band antennas,
just sell it, new smartphones are coming out weekly.
and 4G is gimmicky, best of luck,

Thank you so much guys for trying to help. Do you guys think if root my phone and install custom rom. Is there any chance of getting 4g speed then?
Sent from my HTC Glacier using Tapatalk

ipaq dude said:
Thank you so much guys for trying to help. Do you guys think if root my phone and install custom rom. Is there any chance of getting 4g speed then?
Sent from my HTC Glacier using Tapatalk
Click to expand...
Click to collapse
it's a hardware limitation

check the APNs. I got an Atrix and my downloads on HSPA+ were between 2 and 3. Then I changed the APNs, they had 4 options. THen I got 5-7 downloads. Thats the closest to 4G you'll get on ATT

DiamondJay20 said:
check the APNs. I got an Atrix and my downloads on HSPA+ were between 2 and 3. Then I changed the APNs, they had 4 options. THen I got 5-7 downloads. Thats the closest to 4G you'll get on ATT
Click to expand...
Click to collapse
Are you sure it's not just the amount of traffic in your area?
Here in NYC, i've hit anywhere from 1.5Mbps down all the way up to 6+Mbps down

wow thanks for the info.are you on tmobile also ?
if yes do you mind sharing your apn settings.
i get good 4g speed with mytouch 4g which is tmobile branded device.
Thanks again for your inputs to help me out.
ph00ny said:
Are you sure it's not just the amount of traffic in your area?
Here in NYC, i've hit anywhere from 1.5Mbps down all the way up to 6+Mbps down
Click to expand...
Click to collapse

ipaq dude said:
wow thanks for the info.are you on tmobile also ?
if yes do you mind sharing your apn settings.
i get good 4g speed with mytouch 4g which is tmobile branded device.
Thanks again for your inputs to help me out.
Click to expand...
Click to collapse
ATT
Never tweaked and still on the cingular wap setting
Sent from my GT-I9100 using XDA App

ipaq dude said:
wow thanks for the info.are you on tmobile also ?
if yes do you mind sharing your apn settings.
i get good 4g speed with mytouch 4g which is tmobile branded device.
Thanks again for your inputs to help me out.
Click to expand...
Click to collapse
I hate to burst your bubble but there is no way you are going to get the AT&T device to work on T-Mobile's 3G, nevermind "4G"/HSPA. Sorry.

right... It has to do with the phone and the hardware... aka - the stuff they build the phone with. Its like if you try to use a phone to receive xm radio frequencies... it's not going to work... If you have a phone with the ATT bands they will NEVER work the same on Tmobile. But you can get Edge on any GSM network. Hope this helps. Search for att cellular bands on Google and compare them with Tmobile cellular bands.

Sorry to say it but the guys are correct! ALL of the AT&T 4G phone are quad band GSM phones! They work on the 850/1900 frequencies for all data and communication purposes in the USA! T-Mobile uses 1700! So basically you should have done a little more homework before you ran out and spent all that money!
If you are lucky you can still sell it and maybe get your money back!
Sent from my MB860 using XDA App

yes i know.what waste i hope i will be able to sell it.thank you guys anyways.
souperman7340 said:
Sorry to say it but the guys are correct! ALL of the AT&T 4G phone are quad band GSM phones! They work on the 850/1900 frequencies for all data and communication purposes in the USA! T-Mobile uses 1700! So basically you should have done a little more homework before you ran out and spent all that money!
If you are lucky you can still sell it and maybe get your money back!
Sent from my MB860 using XDA App
Click to expand...
Click to collapse

Wont work at all. Different bands. That is the one crappy part. TMO uses there oddball 1900 MHZ or something like that.

mediq91 said:
Wont work at all. Different bands. That is the one crappy part. TMO uses there oddball 1900 MHZ or something like that.
Click to expand...
Click to collapse
They use 1700 and 2100 (both are required by the phone).

Why is my LTE device displaying as HSPA+?

Hey guys. I Have a Samsung Galaxy Note 2 (SGH-I317M) and for some reason it fluctuates between HSPA+ and 3G signals rather than LTE. The device is originally locked to Rogers but I unlocked it and am now using it with MTS. I am running on jelly bean 4. 1.2 and CleanRom 4.0.5. Anybody have any ideas as to why I'm not getting LTE?

KR3W said:
Hey guys. I Have a Samsung Galaxy Note 2 (SGH-I317M) and for some reason it fluctuates between HSPA+ and 3G signals rather than LTE. The device is originally locked to Rogers but I unlocked it and am now using it with MTS. I am running on jelly bean 4. 1.2 and CleanRom 4.0.5. Anybody have any ideas as to why I'm not getting LTE?
Click to expand...
Click to collapse
Are you still getting fast data speeds? All LTE is 3.9 g and hspa is like 3.6 g lol..
http://tasel.wordpress.com/2012/03/13/lte-hsdpa-dc-hsdpa-explain-this-alphbet-soup-of-4g-to-me/
Since you only mentioned your phone model and not the important notion what your carrier is, what is it?
Sent from my EVO using Tapatalk 2

thlinx said:
Are you still getting fast data speeds? All LTE is 3.9 g and hspa is like 3.6 g lol..
Since you only mentioned your phone model and not the important notion what your carrier is, what is it?
Sent from my EVO using Tapatalk 2
Click to expand...
Click to collapse
Yes I'm getting fast speeds but I can't help but wonder why this is happening. I mentioned that I'm with MTS so I'm not sure if that's what you're looking for. I live in Canada so it's probably not familiar to you. They just started carrying S3's which are running on their LTE network and they show 4G at the top of them when activated rather than HSPA+.

KR3W said:
Yes I'm getting fast speeds but I can't help but wonder why this is happening. I mentioned that I'm with MTS so I'm not sure if that's what you're looking for. I live in Canada so it's probably not familiar to you. They just started carrying S3's which are running on their LTE network and they show 4G at the top of them when activated rather than HSPA+.
Click to expand...
Click to collapse
Nope not familiar with Mts. That's correct.. it all depends on the towers u are near .. if they haven't upgraded there towers sorry your sol lol
Sent from my EVO using Tapatalk 2

It is either the towers or your phone isn't compatible with the bands of LTE (there are multiple bands like there is with UTMS).

MrObvious said:
It is either the towers or your phone isn't compatible with the bands of LTE (there are multiple bands like there is with UTMS).
Click to expand...
Click to collapse
I'm pretty sure it isn't the towers cause my friends iPhone 5 is running off LTE and he live about 5 minutes away from my house. I've also been at distances one minute away from his house and did not pick up LTE then either. I don't know much about bands or frequencies but my carrier just launched the Galaxy S3's and they run off LTE and I'm assuming the Note 2 has the same hardware. S3: 700 (Band 17), 1700/2100 (AWS) MHz , Note 2: 700(band 17) 850 AWS 1,900(band 2). I'm clueless as to what those numbers mean but i'm guessing the important thing is Band 17, right?

Try going near his house then. Or have you checked the network settings? You may have to flash something.

MrObvious said:
Try going near his house then. Or have you checked the network settings? You may have to flash something.
Click to expand...
Click to collapse
I have to no avail. I had a friend try to help me out over the phone with network settings and his phone appears to have a setting that mine does not. When he goes into settings > wireless and network more settings > mobile network there is an option for him to toggle between LTE, HSPA+ etc. My phone doesn't have that for some reason. All that's listed is Mobile data, data roaming, Access point names, and network operators. Nothing to toggle between networks, which is probably what I need to enable LTE. I have no idea why that setting would be absent from my device. My friend was using an S3 on the same operating system as me btw.

From what i can tell it's the frequencies . The frequencies your device have seem to be different than the frequencies the s3 have on your carrier. If it's not that then you can check your apn settings.
Sent from my HTC One X using xda app-developers app
---------- Post added at 01:20 AM ---------- Previous post was at 01:05 AM ----------
Well i didn't realize how old the thread was, but i hope yes fixed your problem.
Sent from my HTC One X using xda app-developers app

What model is your phone, and what model is his phone. You said you brought your phone from a competing carrier who is likely using alternate frequencies that your phone might not be picking up either due to hardware or software limitations. Without knowing the hardware, and where it came from in the first place, we can't figure out what frequencies your phone is looking for and can't answer your question effectively.

download an app that will show you what is the type of connection you are actually on.
I think that maybe its the matter of incorrect icon.

Sprint S 4 ve awill it have a GSM sim card for LTE like the HTC one?

Hey guys. Was just curious if anybody has information on whether the S4 will have the LTE sim card like the HTC one or will it have an embedded LTE card like the note 2? I ask because of my work, I live in NY for one month, and then in the caribbean for one month, and back and forth and back and forth. My current phone is the Photon 4G which has the international sim card slot in it, so its easy with that phone. Any help would be appreciated.

It has a sim card right next to the sd card slot behind the phone. Sim is removable as well, I heard rumors that sprint was going to weld it to the mothboard. But it pops in and out really easy.
Sent from my SPH-L720 using xda app-developers app

spawn11587 said:
Hey guys. Was just curious if anybody has information on whether the S4 will have the LTE sim card like the HTC one or will it have an embedded LTE card like the note 2? I ask because of my work, I live in NY for one month, and then in the caribbean for one month, and back and forth and back and forth. My current phone is the Photon 4G which has the international sim card slot in it, so its easy with that phone. Any help would be appreciated.
Click to expand...
Click to collapse
Yes it does have a removable SIM. See this thread: http://forum.xda-developers.com/showthread.php?t=2249385
May I ask which carrier do you use your Photon with in the Caribbean and on which Island? I ask this because the bands the One and S4 support are not exactly the same ones as the Photon does.

myphone12345 said:
Yes it does have a removable SIM. See this thread: http://forum.xda-developers.com/showthread.php?t=2249385
May I ask which carrier do you use your Photon with in the Caribbean and on which Island? I ask this because the bands the One and S4 support are not exactly the same ones as the Photon does.
Click to expand...
Click to collapse
Hey man, thank you for the reply.
I go to medical school on the island of Antigua, and currently have my Sprint/Motorola photon 4G with me and have had it since the beginning. I use the cell phone provider called LIME (or Cable and Wireless- depending on who talks about it, and it is GSM). LIME operates on 850 MHz band primarily and 1800 MHz in certain areas on the island, Will the sprint galaxy S4 work fine here?
There is another provider called DIGICEL which utilizes the 900 MHz band.

I am willing to bet that one of the devs here will find a way to unlock it for use in the states. Just a matter of time.
Sent from my SPH-L720 using xda app-developers app

spawn11587 said:
Hey man, thank you for the reply.
...
Will the sprint galaxy S4 work fine here?
...
Click to expand...
Click to collapse
That depends... Do those providers support 3G (UMTS/WCDMA/HSPA) or are they 2G only?

myphone12345 said:
That depends... Do those providers support 3G (UMTS/WCDMA/HSPA) or are they 2G only?
Click to expand...
Click to collapse
I would say its more of a 2G speed. But they advertise it as 3G

spawn11587 said:
I would say its more of a 2G speed. But they advertise it as 3G
Click to expand...
Click to collapse
The answer then is, maybe...
For some completely inexplicable reason, it appears that sprint has intentionally disabled the UMTS 850 MHz band on the S4 (and apparently HTC One too) for use worldwide (i.e., not just in the US as they normally do). This band is available in the a photon 4G though. So, if those carriers have deployed UMTS 850 (as many GSM 850 carriers across the world have) then you could very well have a problem, particularly with data speeds. The phone does not have support (disabled or otherwise) for UMTS 900 but neither did the Photon, plus, UMTS 900 tends to be a bit less deployed compared to UMTS 850 anyway. As I said in my the linked thread, I plan on starting a thread on this issue specifically at some point soon.
For 2G GSM the phone is fine though as it is quadband (like the Photon is). We're talking some painfully slow data speeds on 2G however. For 3G GSM, the phone does support UMTS 1900 and 2100.

myphone12345 said:
The answer then is, maybe...
For some completely inexplicable reason, it appears that sprint has intentionally disabled the UMTS 850 MHz band on the S4 (and apparently HTC One too) for use worldwide (i.e., not just in the US as they normally do). This band is available in the a photon 4G though. So, if those carriers have deployed UMTS 850 (as many GSM 850 carriers across the world have) then you could very well have a problem, particularly with data speeds. The phone does not have support (disabled or otherwise) for UMTS 900 but neither did the Photon, plus, UMTS 900 tends to be a bit less deployed compared to UMTS 850 anyway. As I said in my the linked thread, I plan on starting a thread on this issue specifically at some point soon.
For 2G GSM the phone is fine though as it is quadband (like the Photon is). We're talking some painfully slow data speeds on 2G however. For 3G GSM, the phone does support UMTS 1900 and 2100.
Click to expand...
Click to collapse
Is there anyway for me to determine with my photon what frequency the data is coming in on?

spawn11587 said:
Is there anyway for me to determine with my photon what frequency the data is coming in on?
Click to expand...
Click to collapse
Yeah, that's a problem because I believe Sprint disabled the field test menu (##778#) on the Photon. Also, I don't think the Android SDK provides that info to apps so you couldn't install the an app that will tell you that. You could install one of the many mobile network monitor apps on the play store which I would think at least would tell you if you are on GSM or UMTS/WCDMA/HSPA. If you are on UMTS on the Photon there then I'd say there's a good chance you're on 850. That is what LIME's "4G" service in the Bahamas runs on for example.
Anyhoo,let us know what you find out.
EDIT: I think the commonly used ookla "Speed Test" app will also tell you if you are on GSM or UMTS under location:network if you click on one of the test results in history. That migh be you best way of telling. You still won't be able to tell which frequency you're on unfortunately.

Called Lime...and the best they had for me was that they operate on GSM 850/1800/1900 MHz and GPRS data. Not sure if that helps. but I couldnt get any of the programs to function to show if the photon is GSM or UTMS
So I searched a bit for information and found that
LIME - GPRS,GSM - 2G:850 MHz.
According to here http://m2msupport.net/m2msupport/lime-antigua-and-barbuda-m2m-modules-certification-sim-data-plans/
So I am assuming that the S4 will work just like the photon, or am I wrong?

spawn11587 said:
Called Lime...and the best they had for me was that they operate on GSM 850/1800/1900 MHz and GPRS data. Not sure if that helps. but I couldnt get any of the programs to function to show if the photon is GSM or UTMS
So I searched a bit for information and found that
LIME - GPRS,GSM - 2G:850 MHz.
According to here http://m2msupport.net/m2msupport/lime-antigua-and-barbuda-m2m-modules-certification-sim-data-plans/
So I am assuming that the S4 will work just like the photon, or am I wrong?
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Have you tried running Ookla speed test on their network with the Photon? It should tell you what network they are using in the results history if you click on the result of the test as per my previous message.
If they are truly just plain GSM 2G like what the above indicates then the S4 should be fine.

myphone12345 said:
Have you tried running Ookla speed test on their network with the Photon? It should tell you what network they are using in the results history if you click on the result of the test as per my previous message.
If they are truly just plain GSM 2G like what the above indicates then the S4 should be fine.
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Sorry I forgot to mention that. Tried Speed Test / Ookla and all it says in the results history is EDGE, nothing else.

spawn11587 said:
Sorry I forgot to mention that. Tried Speed Test / Ookla and all it says in the results history is EDGE, nothing else.
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If it says EDGE then you will be just fine with the S4.
---------- Post added at 02:52 PM ---------- Previous post was at 02:49 PM ----------
Oh, and I forgot to mention also, you will probably also need to get it unlocked. Unlike the photon, I don't think th S4 comes unlocked out of the box.

I think the info in this thread is inaccurate. The sprint s4 clearly supports 900 and I called and asked a sprint rep if it has a removeable sim and she said yes.

myphone12345 said:
If it says EDGE then you will be just fine with the S4.
---------- Post added at 02:52 PM ---------- Previous post was at 02:49 PM ----------
Oh, and I forgot to mention also, you will probably also need to get it unlocked. Unlike the photon, I don't think th S4 comes unlocked out of the box.
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Thank you greatly myphone12345. For it to be unlocked what has to be done? I read in another thread that I have to call sprint and they will do that for me. Ive been with sprint now for 10 years, so i doubt they would make me wait 90 days.

IamAnnoyed said:
I think the info in this thread is inaccurate. The sprint s4 clearly supports 900 and I called and asked a sprint rep if it has a removeable sim and she said yes.
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GSM 900 (GSM 2G) yes, but not UMTS 900 (GSM 3G, sometimes called "4G" by companies like T-Mobile USA). UMTS-1900 and 2100 are the only international 3G bands supported by the Sprint variant. That is contrary to most US devices that contain international support (including the Motorola Photon 4G), which usually tend to support at least a third 3G band, usually UMTS-850. It's the disabling of UMTS-850 on the S4 (leaving it with only two "high" 3G bands) that's the problem. UMTS-850 is widely deployed across the Americas, plus several other places around the world.
spawn11587 said:
Thank you greatly myphone12345. For it to be unlocked what has to be done? I read in another thread that I have to call sprint and they will do that for me. Ive been with sprint now for 10 years, so i doubt they would make me wait 90 days.
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Yes, you need to call Sprint. This inconsistency with the 90 days is strange. Seems like different CSRs apply the rule to how long you've owned the phone and some to how long your account has been open in good standing. In any case, even if they make you wait, you can always just keep using the Photon overseas and S4 in the 'States until they unlock the S4.
Anyway, Good luck with your studies! Can't think of a sweeter place to do it in.

Hello, guys.
Who looking to unlock own Samsung S4 Sprint - please send to me PM. I have one way which shall to be checked. I'm still don't havemy own Sprint's S4 on hands to check if this way will works