Database Users

Which model to buy for full freedom

I am on ATT but I am tired of ATT BS and locked bootloaders and ROM work arounds. I want to be able to use international ROMs. Plus I want to have my ATT LTE.
I want freedom to have me device my way and with any carrier sim. With this said money is not the issue. So what do I buy. If I am reading things right the answer is a T-Mobile Version and then cancel the contract and put my ATT SIM in the Note 3.
Can anyone confirm or advise?

Want your cake (international version) and eat it too (non-international LTE) AND complain because getting both requires a bit of work? LOL
No carrier is going to let you have full freedom w/o you going behind their back (i.e. unlocking bootloaders and custom ROMs)

weirdingway said:
Want your cake (international version) and eat it too (non-international LTE) AND complain because getting both requires a bit of work? LOL
No carrier is going to let you have full freedom w/o you going behind their back (i.e. unlocking bootloaders and custom ROMs)
Click to expand...
Click to collapse
The T-Mobile appears to have an unlocked Bootloader and unlocked if paid in full. So that sounds like a clean unit to me. That I am free to load Intonational ROM's etc...

If you don't mind 32GB only of internal storage, which effectively translates into ~24GB of user available space - T-Mobile GN3 is your best bet. Pay in full, to get it unlocked and put your AT&T sim into it. Then you will have unlocked bootloader, no carrier network lock, no regional lock and it will work with AT&T LTE. You will be able to use international roms as well, as long as they're not for the octa-core version. You will also be able to flash AT&T modem to it, if you wish.

I just got the T-Mobile Note 3 from Negri (unlocked) It is $689 with no tax here in CA

boilerkim said:
I just got the T-Mobile Note 3 from Negri (unlocked) It is $689 with no tax here in CA
Click to expand...
Click to collapse
Wait, how did you get yours already?

Apo11on said:
If you don't mind 32GB only of internal storage, which effectively translates into ~24GB of user available space - T-Mobile GN3 is your best bet. Pay in full, to get it unlocked and put your AT&T sim into it. Then you will have unlocked bootloader, no carrier network lock, no regional lock and it will work with AT&T LTE. You will be able to use international roms as well, as long as they're not for the octa-core version. You will also be able to flash AT&T modem to it, if you wish.
Click to expand...
Click to collapse
I want to order a Note 3 from Negri to use it with AIO. I would like to have the unlocked bootloader but I'm worry about something I read in another thread here (Note 3 Carrier Selection):
"The main difference between the 1700 band being used by AT&T or TMO device is that AT&T version will use that 1700 for LTE signals where as Tmobile variant will use the 1700 for their HSPA signals."
What if ATT is using 1700 in my area for LTE? I will have the unlocked bootloader and no LTE? Where can I find what frequencies ATT is using in what areas? I made some searches without luck.
Any help will be appreciated.

T-Mobile note3 bootloader appears to be locked. Can't flash CWM

jmarquesh said:
I want to order a Note 3 from Negri to use it with AIO. I would like to have the unlocked bootloader but I'm worry about something I read in another thread here (Note 3 Carrier Selection):
"The main difference between the 1700 band being used by AT&T or TMO device is that AT&T version will use that 1700 for LTE signals where as Tmobile variant will use the 1700 for their HSPA signals."
What if ATT is using 1700 in my area for LTE? I will have the unlocked bootloader and no LTE? Where can I find what frequencies ATT is using in what areas? I made some searches without luck.
Any help will be appreciated.
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Click to collapse
Some search without luck? You've got to be kidding me! I have personally posted AT&T's LTE frequencies in at least 3 threads in Note 3 forums. It takes about 2 seconds to google a wiki page with LTE frequencies by carrier worldwide...FYI AT&T operates it's LTE network on both bands 4 and 17 in most areas. However, I don't understand why do you think there is a problem with AT&T & T-Mo using the same frequency in a certain area. There are 2 absolutely independent carriers, each with their own towers and your phone will get service from a carrier, based on whatever SIM you put in. What difference do these overlapping frequencies make to you?

eclipxe said:
T-Mobile note3 bootloader appears to be locked. Can't flash CWM
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Do you have a source for this?
serialtoon said:
Wait, how did you get yours already?
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Click to collapse
I didn't, just ordered it

Apo11on said:
Some search without luck? You've got to be kidding me! I have personally posted AT&T's LTE frequencies in at least 3 threads in Note 3 forums. It takes about 2 seconds to google a wiki page with LTE frequencies by carrier worldwide...FYI AT&T operates it's LTE network on both bands 4 and 17 in most areas. However, I don't understand why do you think there is a problem with AT&T & T-Mo using the same frequency in a certain area. There are 2 absolutely independent carriers, each with their own towers and your phone will get service from a carrier, based on whatever SIM you put in. What difference do these overlapping frequencies make to you?
Click to expand...
Click to collapse
I did find information about the frequencies used by each carrier. What I was looking for is what frequency is used in a given area, say near my house. Maybe that is not the right question since I'm new to all this problem.
In another thread (Note 3 Carrier Selection) people is recommending to buy the TMobile version over the ATT version even if you want to use it with ATT (AIO). Because the bootloader in TMo may be unlocked. But then cheols46 posted this:
The main difference between the 1700 band being used by AT&T or TMO device is that AT&T version will use that 1700 for LTE signals where as Tmobile variant will use the 1700 for their HSPA signals.
I have 2 HTC One from each carrier and while AT&T version will pick up LTE at my house with the AT&T sim card in it, while T-mobile version only picks up HSPA+ with the AT&T sim card. It really depends on the tower frequency you use in your area.
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I want to know if that will happen to me if I buy the TMo version to use it with AIO.
Thanks in advance for any help you may provide.

That guy is getting only HSPA with AT&T SIM card because his APN for AT&T LTE is not configured correctly on the T-Mo phone. He probably didnt change the APN settings, or maybe T-Mo stock firmware doesnt even have those settings, since the network didnt support LTE when that phone was bought?
If your phone is configured correctly, and you use AT&T SIM you should get LTE service.

Apo11on said:
That guy is getting only HSPA with AT&T SIM card because his APN for AT&T LTE is not configured correctly on the T-Mo phone. He probably didnt change the APN settings, or maybe T-Mo stock firmware doesnt even have those settings, since the network didnt support LTE when that phone was bought?
If your phone is configured correctly, and you use AT&T SIM you should get LTE service.
Click to expand...
Click to collapse
Will you advice to buy the sim unlocked TMo version instead of the ATT version, because of the unlocked bootloader and the support for TMo bands (again this is just something I read)? I'm planning to use it with AIO but after spending all that money it will be good to know that I could use it with TMo if I wanted.

jmarquesh said:
Will you advice to buy the sim unlocked TMo version instead of the ATT version, because of the unlocked bootloader and the support for TMo bands (again this is just something I read)? I'm planning to use it with AIO but after spending all that money it will be good to know that I could use it with TMo if I wanted.
Click to expand...
Click to collapse
If i were you I'd wait a week or two, until other people do it, and you can find enough feedback on how well things work. The question, you should be asking yourself is not a choice between T-Mo vs AT&T version, but T-Mo vs international LTE version with unlocked bootloader, because getting AT&T one with locked bootloader will severely cripple what you can do with your phone. Keep in mind if you have any LTE version with unlocked bootloader you should be able to flash AT&T modem onto it, once it becomes available, regardless of what LTE bands it currently supports.

Apo11on said:
If i were you I'd wait a week or two, until other people do it, and you can find enough feedback on how well things work. The question, you should be asking yourself is not a choice between T-Mo vs AT&T version, but T-Mo vs international LTE version with unlocked bootloader, because getting AT&T one with locked bootloader will severely cripple what you can do with your phone. Keep in mind if you have any LTE version with unlocked bootloader you should be able to flash AT&T modem onto it, once it becomes available, regardless of what LTE bands it currently supports.
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I'm sort of forced to get an AT&T version (have unlimited data) but considering taking chance that someone will figure out N3 bootloader unlock for future versions of AT&T roms. Is that wise?

sonicthoughts said:
I'm sort of forced to get an AT&T version (have unlimited data) but considering taking chance that someone will figure out N3 bootloader unlock for future versions of AT&T roms. Is that wise?
Click to expand...
Click to collapse
I'll give you a hint: http://www.androidoverload.com/bootloader-bounty-exceeds-5k-verizonatt-samsung-galaxy-s4/

boilerkim said:
I just got the T-Mobile Note 3 from Negri (unlocked) It is $689 with no tax here in CA
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Click to collapse
Negri still shows preorder, did they start to ship phones?
And by the way it's 669.5 with code ne20offcart

[Q] Bought the SM-N900 for use in the US, did I mess up?

Basically Ive had the phone for over a month now and the connection issues have been constant. The carrier I use is Straight Talk. I got a new SIM card. Ive tried every APN setting it seems. And I cannot get any help. Did I plainly just mess up and by the wrong version of the phone I needed?

vicmora5 said:
Basically Ive had the phone for over a month now and the connection issues have been constant. The carrier I use is Straight Talk. I got a new SIM card. Ive tried every APN setting it seems. And I cannot get any help. Did I plainly just mess up and by the wrong version of the phone I needed?
Click to expand...
Click to collapse
Yeah. Maybe it isnt support 4g
Sent from my SM-N9005 using XDA Premium 4 mobile app

Should have gone for 9005.

When It is on GSM only mode I only get EDGE speed, and when I switch to either WCDMA/GSM or WDCMA only mode, I do get H+ but its not reliable and I frequently end up in emergency calls only mode and am frequently resending messages. What model should I get for the best results with Straight Talk does anyone know?

vicmora5 said:
When It is on GSM only mode I only get EDGE speed, and when I switch to either WCDMA/GSM or WDCMA only mode, I do get H+ but its not reliable and I frequently end up in emergency calls only mode and am frequently resending messages. What model should I get for the best results with Straight Talk does anyone know?
Click to expand...
Click to collapse
You need the N900A (AT&T) or the N900T (T-Mobile). GSM Mode means 2.5G (EDGE) only. WCDMA Mode means H+ (3G) only.
You can also try the N9005 if you're into tinkering and whatnot.
Your current phone most likely does not support the recommended 'fast' bands that are on US Carriers.

nicholaschum said:
You need the N900A (AT&T) or the N900T (T-Mobile). GSM Mode means 2.5G (EDGE) only. WCDMA Mode means H+ (3G) only.
You can also try the N9005 if you're into tinkering and whatnot.
Your current phone most likely does not support the recommended 'fast' bands that are on US Carriers.
Click to expand...
Click to collapse
Do you know which one would be the best one to get? I'm into rooting and flashing Roms, so based on that Im guessing the N9005, but arent there different carrier models of that phone as well /: basically I dont want to make the same mistake
Thanks for you help

vicmora5 said:
Do you know which one would be the best one to get? I'm into rooting and flashing Roms, so based on that Im guessing the N9005, but arent there different carrier models of that phone as well /: basically I dont want to make the same mistake
Thanks for you help
Click to expand...
Click to collapse
N9005 is most used internationally so more devs support this device. But the N900T also works too.
Not the N900A if you care about ROMs.

nicholaschum said:
N9005 is most used internationally so more devs support this device. But the N900T also works too.
Not the N900A if you care about ROMs.
Click to expand...
Click to collapse
Okay then I'll pass on the N900A. Are there specific carrier branded N9005s? or are they all the same and unlocked. Sorry for all the questions. Also I barely figured out how to "thank" you >.<-

vicmora5 said:
Okay then I'll pass on the N900A. Are there specific carrier branded N9005s? or are they all the same and unlocked. Sorry for all the questions. Also I barely figured out how to "thank" you >.<-
Click to expand...
Click to collapse
Yeah there are, and there are specific models of N9005 too with a different partition structure (Hong Kong 16GB)
You're going to have to find an N9005 not from Hong Kong just in case, even though they also sell the international 32gb version as well, and that is already unlocked SIM wise and region wise.

Also, if you come from the states, make sure the bands are supported by your phone. People have bought the n9005 from America to find the LTE bands don't work in Europe..

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.
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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
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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
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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
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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?

Add LTE bands

Hi, I have the xt1687 us model, and I was curious if there was anyway to add band 20 for use in the uk. Thank you.
Edit: forgot add its the unlocked version bought from motorola direct.

Aye aye
Fit like, will try find out 4 u bro

Vwgti83 said:
Hi, I have the xt1687 us model, and I was curious if there was anyway to add band 20 for use in the uk. Thank you.
Edit: forgot add its the unlocked version bought from motorola direct.
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Click to collapse
I wouldn't recommend it - though there appears to be a way (here for the Moto G5, but the process might be similar https://forum.xda-developers.com/g5/how-to/recovering-2g-3g-set-radio-band-to-usa-t3668767 ) you run the risk of setting the incorrect band and require a firmware flash to repair.
Easiest way to look for 4G access is to go to https://willmyphonework.net/ and enter in your device and the destination for using your device. For US devices, it suggests that EE, O2, 3 UK, Vodafone and Virgin Mobile are some of the providers that can provide 4G LTE on alternative bands over here. Please verify this info before considering purchasing a UK SIM for that carrier, if your device is carrier unlocked, or accessing that network if your carrier has a roaming agreement with them.
EDIT - further investigation for O2, at least, suggests that Band 3 support may only be present in London and large cities, and the main O2 signal is 800 MHz (Band 20), so if you're travelling around the UK, might be worth noting. However, O2 and Vodafone appear to be sharing towers, so you may get 4G/LTE signal regardless if you get switched to Vodafone's network. EE seems to have good coverage and uses the other LTE bands supported by the US devices.

echo92 said:
I wouldn't recommend it - though there appears to be a way (here for the Moto G5, but the process might be similar https://forum.xda-developers.com/g5/how-to/recovering-2g-3g-set-radio-band-to-usa-t3668767 ) you run the risk of setting the incorrect band and require a firmware flash to repair.
Easiest way to look for 4G access is to go to https://willmyphonework.net/ and enter in your device and the destination for using your device. For US devices, it suggests that EE, O2, 3 UK, Vodafone and Virgin Mobile are some of the providers that can provide 4G LTE on alternative bands over here. Please verify this info before considering purchasing a UK SIM for that carrier, if your device is carrier unlocked, or accessing that network if your carrier has a roaming agreement with them.
Click to expand...
Click to collapse
Thank you very much for the response, some food for thought, cheers mate!

Yeah, I wouldn't recommend trying this will any newer Moto device... since like 2015. These bands are locked DEEP within the device, and messing with it is potentially hazardous to your device, meaning if you mess up it is possible that you will get no reception on any band or frequency. I don't think I have seen this successfully done since early Moto G LTE & G2 models, and even then there was a lot of bricked devices.
This is not just a firmware, radio software, or tweak that can be done, it involves going deep into the device with Qualcomm provisioning software (which isn't available through any normal channel) and hunt and peck at various undocumented hexadecimal registry options, which often results in no reception or even a bricked device in some cases. This isn't a Nexus 4 that literally had LTE disabled in a simple radio firmware change.
BTW, ignore all those sites that say they can unlock all LTE bands in any Qualcomm device, it will brick your Moto.
Sorry, but your best bet is just get a new device locally. A simple burner phone if your just there on vacation or for a short stay, or invest in a decent device if you plan on being there for any length of time. There are many options for devices in the EU that we don't have in the US and a relatively cheap one could be sufficient for your needs and use your Moto in WiFi mode for other stuff.

Exynos on AT&T or T mobile

Does anybody use the exynos varient on AT&T or T-Mobile? I'm wondering if you get good service. I'm currently using an exynos S8+ on AT&T without any problems.

i had s9 duos exynos on att. excellent reception. im located in Boston.
Download speedtest to check your data/wifi speed

Thank you for the information. I looked up the S9 exinos on frequencycheck.com. It supports 3 out of the 4 4g bands on AT&T. According to the website the s10 exynos only supports 2 out of 4. So that doesn't help too much but I never thought about checking the s9 since I know it works well.

Works great for me. I got an Exynos from Australia when my phone died. Checked the bands for SM-G975F, and it has all the T-Mobile LTE bands EXCEPT band 71. So you will be good unless you go into rural USA.
Only thing I don't get is Carrier Aggregation. I have wifi calling and VOLTE..

Thank you for the info. After looking up that model it should work fine on both networks. That website I was using has wrong info on some of the models. I think I will buy the SM-G975F.

Wayneman101 said:
Thank you for the info. After looking up that model it should work fine on both networks. That website I was using has wrong info on some of the models. I think I will buy the SM-G975F.
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I also have the G975 F(BTU - United Kingdom) I live in Milwaukee on ATT Network. I get great LTE Speeds - the only thing I don't get is Wifi Calling and ATT Video Calling - ATT only supports their phones for those features - at least until there is a custom CSC that we can flash (like someone did for the Note 9, S8Plus, etc)

Do you have VoLTE at least on AT&T with the exynos?

Geekser said:
I also have the G975 F(BTU - United Kingdom) I live in Milwaukee on ATT Network. I get great LTE Speeds - the only thing I don't get is Wifi Calling and ATT Video Calling - ATT only supports their phones for those features - at least until there is a custom CSC that we can flash (like someone did for the Note 9, S8Plus, etc)
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Click to collapse
Thank you for the info. I want to keep AT&T but I would switch to T-Mobile to get the exynos variant if needed. But I'm glad I can keep my service. I had the original IPhone and I'm grandfathered in to the original unlimited data plan. I didn't even know AT&T offered wifi calling. Before my exynos s8+ I had a note 4 and for about a year my moms extra free IPhone 6. It wasn't an option back then. I don't really care about WiFi calling though. I get good service where it matters most. I can't wait for S10+ Roms!

nismoxr34 said:
Works great for me. I got an Exynos from Australia when my phone died. Checked the bands for SM-G975F, and it has all the T-Mobile LTE bands EXCEPT band 71. So you will be good unless you go into rural USA.
Only thing I don't get is Carrier Aggregation. I have wifi calling and VOLTE..
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I get limited carrier aggregation on my Exynos S10+ on T-mobile which helps a little. It still lacks the full CA support tho.

VICosPhi said:
I get limited carrier aggregation on my Exynos S10+ on T-mobile which helps a little. It still lacks the full CA support tho.
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How do you check that? I check on my service menu and it says CA:None
I do see that I am sometimes connected to three of the same band at the same time.

nismoxr34 said:
How do you check that? I check on my service menu and it says CA:None
I do see that I am sometimes connected to three of the same band at the same time.
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First you download a file or run speed test using speed test app, then at the same time dial *#0011# and select SIM slot it'll say CA added or CA active. This means you're getting some form of aggregation
Sent from my SM-G975F using Tapatalk

VICosPhi said:
First you download a file or run speed test using speed test app, then at the same time dial *#0011# and select SIM slot it'll say CA added or CA active. This means you're getting some form of aggregation
Sent from my SM-G975F using Tapatalk
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That's what I've been doing, but I don't see CA added or active. I wonder why mine doesn't even have CA on. Just CA none.

nismoxr34 said:
That's what I've been doing, but I don't see CA added or active. I wonder why mine doesn't even have CA on. Just CA none.
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And you have the Exynos version correct? Try it in a different area away from your home and see if it activates. If nothing works, factory reset may help.
Sent from my SM-G975F using Tapatalk

VICosPhi said:
And you have the Exynos version correct? Try it in a different area away from your home and see if it activates. If nothing works, factory reset may help.
Sent from my SM-G975F using Tapatalk
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I am on Exynos, wouldn't have this problem with the SD version (I'd hope). I have factory reset a few times, but never see the CA as activated. I'll check from time to time, but also away from my house it doesn't show that CA is activated. Might be the XSF (australian) version that doesn't aggregate the t-mobile bands.

nismoxr34 said:
I am on Exynos, wouldn't have this problem with the SD version (I'd hope). I have factory reset a few times, but never see the CA as activated. I'll check from time to time, but also away from my house it doesn't show that CA is activated. Might be the XSF (australian) version that doesn't aggregate the t-mobile bands.
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That could be it. I'm using TPA CSC and some other people on that CSC confirmed carrier aggregation working on T-mobile.
Snapdragon (Chinese or Hong Kong variant) does not support carrier aggregation in T-mobile from what a user posted.
Sent from my SM-G975F using Tapatalk

VICosPhi said:
That could be it. I'm using TPA CSC and some other people on that CSC confirmed carrier aggregation working on T-mobile.
Snapdragon (Chinese or Hong Kong variant) does not support carrier aggregation in T-mobile from what a user posted.
Sent from my SM-G975F using Tapatalk
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Do you have a link to the post where it is CA is confirmed on TMO?

For which model the Chinese Snapdragon?
CA is working for me on Exynos. It is not the same as US Snapdragon CA but still better than no CA at all
Sent from my SM-G975F using Tapatalk

Do you need to flash a CSC and/or modem from a US carrier onto an exynos international phone to get VoWIFI, CA, VoLTE, etc? Or does it "just work?" If you need a special CSC do you just pull HOME_CSC out of a US carrier's firmware and flash it with odin or something?

epv said:
Do you need to flash a CSC and/or modem from a US carrier onto an exynos international phone to get VoWIFI, CA, VoLTE, etc? Or does it "just work?" If you need a special CSC do you just pull HOME_CSC out of a US carrier's firmware and flash it with odin or something?
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Hi
You should not flash any firmware from a Snapdragon into a Exynos..... You may not be able to get some of the service provider options using the Exynos firmware, i guess is a try and see situation, but one thing is for sure do not flash a Snapdragon firmware into an Exynos.
Everything else should work , modem is ready for all frequencies but CDMA

in case anyone comes looking, i've tried it on an exynos G973F with XSG csc (one of the OXM multi ones) just because that's what was on the phone.
VoLTE seems to be working on T-Mobile in the US without any messing around, based on the "HD" icon appearing during voice calls. Voice over WiFi seems to also work.
The phone is dual SIM with a TMO sim and an ATT sim. It doesn't get VoLTE on ATT, but I believe that's probably because AT&T only allows it on approved devices.