Database Users

[Q] Galaxy S5 Active on T-Mobile

T-Mobile uses the 1700MHz and 2100MHz frequencies for 4G LTE data, and the Galaxy S5 Active supports 1700 and 2100, according to GSMArena.
1) Why then is the phone listed everywhere as "For AT&T"?
2) If I buy an S5 Active without a contract, how will data work on T-Mobile? 3G? 4G? 4G LTE?

dandv said:
how will data work on T-Mobile? 3G? 4G? 4G LTE?
Click to expand...
Click to collapse
Any given S5 model has the hardware capability to operate on all of the GSM and LTE bands. But Samsung can sell more phones, and carriers can deter you from jumping ship too readily by marketing lots of different S5 models that have various incompatibilities.
The S5 Active or SM-G870ADGEATT is a ruggedized variant, exclusive to ATT. So why is it said to be for ATT? Marketing.
As to compatibility with TMobile, assuming that you SIM unlock it, it can operate on most of the TMB bands. But again ATT has put a lot of thought into how to discourage you from moving to a different carrier. To wit, they have omitted support for TMB's 3G 1700 and LTE band 8.
You'd have to find out how widely TMB uses those bands to know if that would be a large impact on data use or not.
.

dandv said:
T-Mobile uses the 1700MHz and 2100MHz frequencies for 4G LTE data, and the Galaxy S5 Active supports 1700 and 2100, according to GSMArena.
1) Why then is the phone listed everywhere as "For AT&T"?
2) If I buy an S5 Active without a contract, how will data work on T-Mobile? 3G? 4G? 4G LTE?
Click to expand...
Click to collapse
There was a rumor posted 2 months ago on the Android Community that a T-Mobile version of the Galaxy S5 Active (model SM-G870T vs the AT&T model SM-G870A) would be out in late July. Here's a link.
http://androidcommunity.com/samsung-galaxy-s5-active-availability-leaks-out-20140529/
Obviously it's late July now and we haven't seen it but I'm wondering if AT&T got an exclusive on the Galaxy S5 Active for a few months and T-Mobile will release it after the exclusivity period expires.

fffft said:
Any given S5 model has the hardware capability to operate on all of the GSM and LTE bands. But Samsung can sell more phones, and carriers can deter you from jumping ship too readily by marketing lots of different S5 models that have various incompatibilities.
The S5 Active or SM-G870ADGEATT is a ruggedized variant, exclusive to ATT. So why is it said to be for ATT? Marketing.
As to compatibility with TMobile, assuming that you SIM unlock it, it can operate on most of the TMB bands. But again ATT has put a lot of thought into how to discourage you from moving to a different carrier. To wit, they have omitted support for TMB's 3G 1700 and LTE band 8.
You'd have to find out how widely TMB uses those bands to know if that would be a large impact on data use or not.
.
Click to expand...
Click to collapse
Sorry to dredge up an old topic, however you mentioned that the S5 active has the hardware capability to support all TMB bands, 1700 included, but then say "To wit, they have omitted support for TMB'S 3G 1700 and LTE band 8". Does this just mean the stock AT&T ROM is the only limiting factor? So, were I to flash the AT&T stock ROM and install a Tmobile ROM for example I could then utilize ALL of Tmobile ' 3G and LTE bands? (And wifi calling to boot).
Thanks

S5 Active is pretty limited on Tmobile network
"Sorry to dredge up an old topic, however you mentioned that the S5 active has the hardware capability to support all TMB bands, 1700 included, but then say "To wit, they have omitted support for TMB'S 3G 1700 and LTE band 8". Does this just mean the stock AT&T ROM is the only limiting factor? So, were I to flash the AT&T stock ROM and install a Tmobile ROM for example I could then utilize ALL of Tmobile ' 3G and LTE bands? (And wifi calling to boot).
Thanks"
I NEED to do something with my S5 Active to get it working better on Tmobile. I love the S5A... its a perfect phone for me. Not too big, but big enough. Rugged, waterproof, good camera, uSD card, etc. Without WiFi Calling and support for all of Tmo's freq & channels, its severely limiting.
I'd pay someone to help me convert my phone to Tmobiles stock S5 5.1.1 ROM and baseband radio firmware.
Help!
Jim

Also having the same problem with an unlocked S5 Active originally setup for AT&T. It uses the EDGE network only.
Has anyone successfully modified the phone to utilize the TMB 1700 band or the LTE band 8 as mentioned in this post? (either through ROM upgrade or other)?

I love the S5 Active, but using it with T-Mobile is such a hassle. I have the $30/mo. prepaid plan that includes unlimited text and data, so I'm not changing carriers anytime soon, but I have to buy new phones outright. When I bought this for myself last December, I saw it was compatible with T-Mobile so I pulled the trigger - a mistake in retrospect.
I'm from a large metro-area but T-Mobile's 4G signal is nearly impossible to get with this phone. Aside from never being able to connect to the internet when out of my apartment, sending/receiving MMS texts are a chore. I also discovered today that my android OS with this phone hasn't updated itself since I bought it - it's still running 4.4.2 and when I try to check for updates to Android through my device settings, it tells me AT&T has no new available updates at this time (there have in fact been 3 new updates AT&T released during this time).
So while I really love the phone, I'm going to have to sell it and look for a new device that's actually compatible with T-Mobile's network.

The Fix
I would go in the VPN settings and manually reset the ports and frequencies the phone reads and when it reads the T-Mobile sim card that it reads upon boot up.
Now, I'm running similar set up with Samsung Galaxy S4 & S5 (At&T variants), it seems like it works, have tried it on friend's S5 Active and it works perfectly.
The only problem is that you won't get to enjoy the freedom of wifi calling even though u have T-Mobile sim card and service, But at least u will be guaranteed to use T-Mobile 4G LTE speed and signals. Occassionally, T-Mobile will blackout or a region without T-Mobile and automatically the phone will roam with no charge and use AT&T signals for up to 15 minutes or depending to circumstances of the situation.
---------- Post added at 05:07 PM ---------- Previous post was at 05:04 PM ----------
ActiveS5 said:
I love the S5 Active, but using it with T-Mobile is such a hassle. I have the $30/mo. prepaid plan that includes unlimited text and data, so I'm not changing carriers anytime soon, but I have to buy new phones outright. When I bought this for myself last December, I saw it was compatible with T-Mobile so I pulled the trigger - a mistake in retrospect.
I'm from a large metro-area but T-Mobile's 4G signal is nearly impossible to get with this phone. Aside from never being able to connect to the internet when out of my apartment, sending/receiving MMS texts are a chore. I also discovered today that my android OS with this phone hasn't updated itself since I bought it - it's still running 4.4.2 and when I try to check for updates to Android through my device settings, it tells me AT&T has no new available updates at this time (there have in fact been 3 new updates AT&T released during this time).
So while I really love the phone, I'm going to have to sell it and look for a new device that's actually compatible with T-Mobile's network.
Click to expand...
Click to collapse
To get the At&T updates, I would advise you to go to Ebay and buy a prepaid At&t sim card for the phone and use it temporarily just to update it all the up to 5.1 Android OS and your phone will be running up to date. (cost anywhere from $3.99 to $15.99)

rossionQ!va said:
I would go in the VPN settings and manually reset the ports and frequencies the phone reads and when it reads the T-Mobile sim card that it reads upon boot up.
Now, I'm running similar set up with Samsung Galaxy S4 & S5 (At&T variants), it seems like it works, have tried it on friend's S5 Active and it works perfectly.
The only problem is that you won't get to enjoy the freedom of wifi calling even though u have T-Mobile sim card and service, But at least u will be guaranteed to use T-Mobile 4G LTE speed and signals. Occassionally, T-Mobile will blackout or a region without T-Mobile and automatically the phone will roam with no charge and use AT&T signals for up to 15 minutes or depending to circumstances of the situation.
---------- Post added at 05:07 PM ---------- Previous post was at 05:04 PM ----------
To get the At&T updates, I would advise you to go to Ebay and buy a prepaid At&t sim card for the phone and use it temporarily just to update it all the up to 5.1 Android OS and your phone will be running up to date. (cost anywhere from $3.99 to $15.99)
Click to expand...
Click to collapse
I got the AT&T updates by going into a Best Buy where they have a Samsung Experience center, took about 10 minutes but they updated my phone. I'll have to look into the VPN settings and see if there's anything I can do, but after purchasing the phone online I did have the folks at a T-Mobile store set the phone up for me so I would've figured they would have set it up proper.

Thinking of going to TMobile
ActiveS5 said:
I got the AT&T updates by going into a Best Buy where they have a Samsung Experience center, took about 10 minutes but they updated my phone. I'll have to look into the VPN settings and see if there's anything I can do, but after purchasing the phone online I did have the folks at a T-Mobile store set the phone up for me so I would've figured they would have set it up proper.
Click to expand...
Click to collapse
I have a S5 Active and I was considering making the jump to TMo, but I really would like the functionality of the wi-fi calling and text, since I work in a hospital and can get no reception or texts. Pardon me if this is a dumb question as I have no experience in jumping carriers with rooted phones, but would I get the features if I had the TMo sim, applied the TMo APN's, flashed a TMo stock or custom rom that has the features baked in? Would I just flash the 870a kernel to make it work? Anybody that has any ideas, I would love to hear them. Thanks

I'm on T-Mobile, would it be worth getting the S5 Active? I currently have the S4 Active.

[Q] So confused with all the variants

Hi, I've been a S4 user and a very intrigued reader on this website. XDA has taught me many great things about my Sprint S4. I'm now ready to make the leap to the Note 4 and I'm so confused with all of the different models available.
Here's what I want the phone to do:
- I live in the US, and I would like to set up the phone on the Straight Talk or AT&T network and I obviously want to take advantage of the fastest speeds Straight Talk/AT&T offers.
- I am traveling to England in the Summer for a month and I would like the phone to work on one of their networks. (I would like to have 4G, but if 3G is the only compatible band than that's fine, as long as I'm getting some sort of data).
- I travel to Canada on a monthly basis and I would like my Note 4 to be able to run on the Rogers Network and utilize the fast speeds Rogers offers.
Basically, which Note 4 model will satisfy my needs? I just want to take advantage of the fastest bands available in these places. I've been leaning towards the N910H because my understanding is that it is compatible with all of my above requirements. Is this true? If not, which model should I be look at?
Thank you!

stevenrp said:
Hi, I've been a S4 user and a very intrigued reader on this website. XDA has taught me many great things about my Sprint S4. I'm now ready to make the leap to the Note 4 and I'm so confused with all of the different models available.
Here's what I want the phone to do:
- I live in the US, and I would like to set up the phone on the Straight Talk or AT&T network and I obviously want to take advantage of the fastest speeds Straight Talk/AT&T offers.
- I am traveling to England in the Summer for a month and I would like the phone to work on one of their networks. (I would like to have 4G, but if 3G is the only compatible band than that's fine, as long as I'm getting some sort of data).
- I travel to Canada on a monthly basis and I would like my Note 4 to be able to run on the Rogers Network and utilize the fast speeds Rogers offers.
Basically, which Note 4 model will satisfy my needs? I just want to take advantage of the fastest bands available in these places. I've been leaning towards the N910H because my understanding is that it is compatible with all of my above requirements. Is this true? If not, which model should I be look at?
Thank you!
Click to expand...
Click to collapse
I can't say for certain about Rogers Canada, but the US T-mobile variant- SM-910T- is what I have, and you should look into it. Maybe someone with Rogers can chime in about that.
It's 100% compatible with AT&T's fastest LTE bands and most 4G GSM bands used in Europe. It has an unlocked bootloader for easy rooting/ROM-flashing. There is an awesome XDA section devoted to it with some great ROMs and other tweaks. Of course, the major benefit is that if you stroll into a T-mobile store any buy one, it will have a warranty and service options if something were to possibly be wrong with it. Now, you'll need to get the phone SIM-unlocked either through T-mobile directly or an online sim-unlocking service (~ $20-30)
If you wanna spend less in the States, the 910T sells on craigslist, swappa, ebay, etc in pretty large numbers and it's very easy to obtain one in mint condition for a lot less than retail. Obviously, make sure that the device has a good IMEI through swappa.com before buying it used.
I find that lots of people buy the Note 4 and decide to sell it after a while- either they prefer something smaller, or an iPhone, or any number of other reasons like wanting extra cash, but there's tons of em on craigslist here in Chicago.
I bought a Sprint Note 4 in perfect condition from a guy for $350 the other week. Not saying you will necessarily have that type of luck, but just something to ponder.

i use 910U on rogers and AT&T gophone. also used it in the UK, most of europe and asia. this is an exynos taiwan variant with LTE. may not give you the fastest speeds everywhere but its awesome.

In the UK we get the Snapdragon 910F, but the 910H looks good according to the bands I've seen online (I don't know if they're correct mind!)
In the UK different networks use different bands (900, 1800, 2100, etc) for 3G; with some of the bands being shared amongst companies these days. Ideally you want a device that supports 900Mhz UTMS, and the 910H supports the band. The 900Mhz band has better indoor coverage than the higher frequencies as well.
Again 4G is on different bands depending on your provider, but the networks share most of the spectrum at the moment to reduce costs. I believe 4G is on 800, 1800, and 2600Mhz
i use 910U on rogers and AT&T gophone. also used it in the UK, most of europe and asia. this is an exynos taiwan variant with LTE. may not give you the fastest speeds everywhere but its awesome.
Click to expand...
Click to collapse
IDK about LTE, but phones for China/HK will work on our 3G networks. I've tried a few 3G iphone knockoffs and had no issues.

AT&T LTE Speed Difference N910C vs. N910A / Call to give IMEI #?

I am about to return the N910A (AT&T Note 4 version) since i just picked up an N910C (Exynos Unlocked version).
I've done mutliple speedtest.net (via the app) tests and i am not getting the same speeds. I have an LTE Iphone 5C, the N910A and the N910C.
The Iphone and N910A are pulling about 10Mb/s more than the N910C.
The APNs and the SIMs were identical on the N910A and C.
If i call AT&T to provide my IMEI #, do you think my speeds will start to match the iphone 5C and N910A?? Or, since my phone is not carrier branded, i may not be able to match the others' speeds?
Thanks!

pmpntl said:
I am about to return the N910A (AT&T Note 4 version) since i just picked up an N910C (Exynos Unlocked version).
I've done mutliple speedtest.net (via the app) tests and i am not getting the same speeds. I have an LTE Iphone 5C, the N910A and the N910C.
The Iphone and N910A are pulling about 10Mb/s more than the N910C.
The APNs and the SIMs were identical on the N910A and C.
If i call AT&T to provide my IMEI #, do you think my speeds will start to match the iphone 5C and N910A?? Or, since my phone is not carrier branded, i may not be able to match the others' speeds?
Thanks!
Click to expand...
Click to collapse
From my experience, the AT&T representative will "temporarily" remove the LTE restriction placed on your IMEI. The restriction will renew on your next billing cycle. Although you will receive LTE signal on your device, the speed will always be lower than AT&T branded devices because AT&T prioritizes data for carrier branded devices.

how could this be when i've used a nexus 5 for a year now with great LTE speeds. That one was bought unlocked from google. i.e. that is not a specfic carrier branded phone...

pmpntl said:
how could this be when i've used a nexus 5 for a year now with great LTE speeds. That one was bought unlocked from google. i.e. that is not a specfic carrier branded phone...
Click to expand...
Click to collapse
You're correct. Nexus 5 is unbranded phone, but its modem is universal. There are only two models of nexus 5. One for CDMA carriers like Verizon and the other for GSM carriers like AT&T. This is not the case for Galaxy devices. Each model number has its own modem. SM-N910C model uses Ericsson Thor M7450 modem while SM-N910A (AT&T variant) uses Qualcomm MDM9x25M modem. If you utilize BYOD, your phone is flagged as "foreign" and is deprioritized because carriers do not know how much burden your modem is going to put on the network.

definitive FACTS on all s8 variants

I bought a Verizon SM-G950UZKAVZW direct from Samsung. I thought that I was buying a phone that I could take to any carrier. I'm hearing that might not be true. Does anyone have definitive, confirmed specs ie supported radio bands on all of the carrier variants as well as the upcoming intl version? Also I heard other reports that the hardware is identical and it's firmware that is limiting the phones. Not sure if that is true either. Samsung was absolutely not helpful.
Bottom line I need to know:
1 if I keep the SM-G950UZKAVZW, will I be able to use it with other carrier networks?
2 if I can use the SM-G950UZKAVZW with other carriers, what actions (if any) would I need to take to do that? (Other than swapping a sim card)
3 would the phone I currently possess be limited in any way if I were to use it with other carriers? (Limited is defined here as "performing differently in contrast to that carriers native S8 model variant") if so, specifically how would it be limited?
4 if I were to purchase an unlocked international model once it becomes available, would that phone be limited in any way when used on any US carrier? (Limited is again defined here as "performing differently in contrast to that carriers native S8 model variant") if so, specifically how?
If you aren't sure, please don't reply. There's plenty of people documenting their best guess already. I'm looking for the straight story.
Thanks for reading!

All of Verizon phones are Sim card unlocked and since there is really only 1 version of the S8/S8+ in the US (with different model #'s corresponding to the different carriers) using the phone on another carriers network is not going to be an issue. All you need to do is insert the sim card in.
http://www.gottabemobile.com/how-to-unlock-the-galaxy-s8/
As a quick note, if you have a Verizon Galaxy S8 congratulations. Your phone is already unlocked. Verizon Wireless no longer locks phones, regardless of what you might hear from friends or family. Simply drop a T-Mobile or AT&T SIM card in a Verizon model and it works. It may require manually configuring the APN settings though, so keep that in mind.
Click to expand...
Click to collapse
The ONLY exception that might be would be Sprint since they are CDMA as well, but who really wants to go from Verizon to Sprint?????
All 4 Major US(and subsequent sub carriers) are receiving the same version of the phone(meaning same internals). From my understanding, inserting the carriers Sim card into the verizon phone just means you start going at that point and have access to all the carriers bands
If you got an international version, it most likely would be powered by an Exynos CPU vs the Snapdragon 835 so there would be some performance differences (typically Exynos models perform marginally better based on previous history)
If you're looking for a US unlocked model - wait until next month
http://www.theverge.com/circuitbrea...-unlocked-galaxy-s8-plus-pricing-release-date

I appreciate your clear response! Would it be accurate to say that I will have just as much freedom to hop from one carrier to another using the phone I have, as opposed to purchasing the upcoming US unlocked variant?
Also, I have heard the same thing about the hardware, that all of the carrier variants are the same physical model. But some folks, including the Samsung tech support rep I spoke to (unfortunately that probably doesn't mean a whole lot) seem to think that the carrier firmware is limiting the radio bands. Do you know this to be false?

I have the Verizon version and works fine on Tmo out of the box. Have to use Verizon update software through Windows though. OTA's will never come through.

I am using Verizon GS8 on att, it works but I only get HSPA mostly. No LTE, so band is definitely capped by firmware.
I didn't have any issue receiving ota with att sim in vzw gs8

I saw a review that said the s8 gets locked to the first carrier sim it accepts. Can someone confirm swapping sims of different carriers works?

Whanksta said:
I am using Verizon GS8 on att, it works but I only get HSPA mostly. No LTE, so band is definitely capped by firmware.
I didn't have any issue receiving ota with att sim in vzw gs8
Click to expand...
Click to collapse
Have you tried going into the network band menu and locking it to one of the AT&T LTE bands?
This still works on the S8 (found this on the S7 and used it to lock my S7 to band 4 for Tmobile)
https://forum.xda-developers.com/tm...ng-network-t3331555/post65722081#post65722081

ElBeaner said:
Have you tried going into the network band menu and locking it to one of the AT&T LTE bands?
This still works on the S8 (found this on the S7 and used it to lock my S7 to band 4 for Tmobile)
https://forum.xda-developers.com/tm...ng-network-t3331555/post65722081#post65722081
Click to expand...
Click to collapse
I am unable to access the service menu via the S7 method

Whanksta said:
I am unable to access the service menu via the S7 method
Click to expand...
Click to collapse
Ok forgot you were Verizon - you have to edit a setting because they block you from that access
Try this if you're daring enough
https://forum.xda-developers.com/verizon-galaxy-s6/general/enabling-using-servicemode-t3109579
EDIT Damn, looks like you have to be rooted first
---------- Post added at 12:06 PM ---------- Previous post was at 11:18 AM ----------
Whanksta said:
I am unable to access the service menu via the S7 method
Click to expand...
Click to collapse
You'll need to wait unti the official AT&T rom is available from Smasung and then you should be able to flash it via ODIN onto the phone and get all the AT&T carrier bands

mredamon said:
I bought a Verizon SM-G950UZKAVZW direct from Samsung. I thought that I was buying a phone that I could take to any carrier. I'm hearing that might not be true. Does anyone have definitive, confirmed specs ie supported radio bands on all of the carrier variants as well as the upcoming intl version? Also I heard other reports that the hardware is identical and it's firmware that is limiting the phones. Not sure if that is true either. Samsung was absolutely not helpful.
Bottom line I need to know:
4 if I were to purchase an unlocked international model once it becomes available, would that phone be limited in any way when used on any US carrier? (Limited is again defined here as "performing differently in contrast to that carriers native S8 model variant") if so, specifically how?
Click to expand...
Click to collapse
Once it becomes available? You can buy Exynos right now from other countries. Clove in UK will region unlock the phone before shipping to you in the U.S. What needs to become available?
Don't confuse the "unlocked" S8 Samsung will sell here in the U.S. in a month or so with the Exynos international variant. The "unlocked" S8 coming to the U.S. is still the bootloader locked Snapdragon version, just without carrier branding. It will be carrier unlocked but not bootloader unlocked. If you care about rooting, TWRP, ROMs, etc Exynos is what you want.
would that (Exynos international variant) phone be limited in any way when used on any US carrier?
(Limited is again defined here as "performing differently in contrast to that carriers native S8 model variant") if so, specifically how?
Click to expand...
Click to collapse
NO, except if you are on CDMA-handicapped Sprint or Verizon. If you use Sprint or Verizon be aware Exynos doesn't have 3G CDMA bands to fall back on if you can't get LTE. For AT&T or T-Mobile, YES it has all the LTE/HSPA/GSM bands.
The "international" Exynos variant can be bootloader unlocked, rooted, etc. so tons of advantages. While it has Verizon LTE bands, there's no CDMA. This means you really need Verizon VoLTE to work and I don't have the answer to that. And if you can't get LTE signal on mobile network, you won't have any signal due to no CDMA fallback. Again, only an issue because of CDMA if you stay on Verizon instead of using AT&T or T-mobile (or their network affiliates). You seem like you want to switch to another carrier? So, go ahead and do so!
EXYNOS VARIANTS LTE BANDS:
LTE Bands: FDD: B1(2100), B2(1900), B3(1800), B4(AWS), B5(850), B7(2600), B8(900), B12(700), B13(700), B17(700), B18(800), B19(800), B20(800), B25(1900), B26(800), B28(700), B32(1500), B66(AWS- 3) | TDD: B38(2600), B39(1900), B40(2300), B41(2500)
GSM/GPRS
850 / 900 / 1800 / 1900 MHz
3G/HSPA
850 / 900 / 1900 / 2100 MHz

ChazzMatt said:
Once it becomes available? You can buy Exynos right now from other countries. Clove in UK will region unlock the phone before shipping to you in the U.S. What needs to become available?
Don't confuse the "unlocked" S8 Samsung will sell here in the U.S. in a month or so with the Exynos international variant. The "unlocked" S8 coming to the U.S. is still the bootloader locked Snapdragon version, just without carrier branding. It will be carrier unlocked but not bootloader unlocked. If you care about rooting, TWRP, ROMs, etc Exynos is what you want. /QUOTE]
Yeah I screwed up. I did confuse them.
I'm not interested in all that rooting stuff I just want a phone that pretty much works anywhere I want to take it and if it's slower on one network than another I wanna know what I'm getting myself into.
Click to expand...
Click to collapse

Whanksta said:
I am using Verizon GS8 on att, it works but I only get HSPA mostly. No LTE, so band is definitely capped by firmware.
I didn't have any issue receiving ota with att sim in vzw gs8
Click to expand...
Click to collapse
Hey guys
I'm from Brazil and I wanna buy the Verizon's S8 but I'm afraid about the 4G.
I saw that this model has the Brazil LTE frequencies, but I read here that Verizon capped the band from the firmware.
Somebody knows if I could flash via ODIN the unlocked rom that will come with the unlocked version in USA and so get the LTE free to use in any place?
I don't want to assume the risk to have a top mobile phone but don't be able to use 4G.
Thank you very much guys

Hey mredamon. Did you ever get a clear response here or somewhere else about this?

GT-i9515 only 2g speed?

Hey everyone,
I read for hours but unfortunately I haven't been able to find the solution.
So I bought a Galaxy S4 GT-I9515 in Europe and I'm not able to get any speeds higher than 2g on my USA 4g T-mobile plan.
The network mode is set on auto connect (LTE/WCDMA/GSM). I tried setting up a t-mobile 4g APN but it won't accept it (it pops back to standard after a few seconds..)
The simcard does work at 4g on another phone.
I rooted it with chainfire autoroot but this made no difference.
Anyone have a clue? At least 3g would be nice and should be possible..

Does the gt-9515 support the carrier's 3g and 4g frequencies?

Hey, thanks for thinking along..
According to frequencycheck.com, yes (both 3g and 4g).
Also, the t-mobile store didn't make notice of this being a problem. They were horribly incompetent though (just googling everything..) But you'd think they would at least check that much.

The I9515 won't get LTE in Europe as bands 2, 4, 12, and 17 aren't used there. The best you can do is HSPA (3.5G in the US) for data. If you're not getting at least HSPA the local carrier may have throttled you.

Strephon Alkhalikoi said:
The I9515 won't get LTE in Europe as bands 2, 4, 12, and 17 aren't used there. The best you can do is HSPA (3.5G in the US) for data. If you're not getting at least HSPA the local carrier may have throttled you.
Click to expand...
Click to collapse
If I put the simcard in my old phone (moto G 1st gen) it makes an LTE connection so I'm not throttled.
I downloaded an app called LTE Discovery which doesn't read an LTE connection but says HSPA: -75.0 dBm is available.
With an internet speed test I'm only getting 770 Kbps however.

Oh, and I'm in Las Vegas currently (not in the middle of nowhere before anyone asks.. )
It's about the same speed in the Bay-area.

I misread your initial post. The fact you're not picking up LTE in Las Vegas means something else is wrong. In fact it makes me wonder if you even have an I9515. Kindly enter download mode and read off the model number please?
If things are as I suspect they are, then you're actually in possession of an I9505. My comments in my earlier post regarding LTE still apply, except it's the phone lacking the US bands instead of lacking European bands.

Strephon Alkhalikoi said:
That you were experiencing this in the US wasn't apparent from your posts. The fact you're not picking up LTE in Las Vegas means something else is wrong. In fact it makes me wonder if you even have an I9515. Kindly enter download mode and read off the model number please?
Click to expand...
Click to collapse
You're right, I mentioned the US T-mobile plan but forgot to clearly mention where the problem was occurring/where I want to use the phone (which I bought in the Netherlands). Just to be clear: I am in the USA and that's where I intend to use it.
ODIN MODE
Product Name: GT-I9515

Ok...I'm really confusing myself. For some odd reason I had the Straight Talk S4 in mind. LOL.
The I9505 and I9515 have the same bands: 1, 3, 5, 7, 8, and 20. You won't get LTE in the US on this device and are limited to HSPA here. Fortunately, HSPA is fast enough for multimedia​, so unless T-Mobile is repurposing its 3G network for LTE you should see about 4 or 5Mb a second.

Thanks for analyzing, you seem to know a lot about this.
However, the primary problem is I'm not reaching any HSPA speeds either.

I know a lot about this, as I have an I9505 and live in the US.
The phone is working properly, so speed issues are carrier related. And it's not uncommon. I've had it happen myself, on AT&T towers.