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N9750/DS (dual Sim) exynos chip, flash tmo csc?

I'm in a market for dual Sim note 10 plus from overseas. Possible to flash that phone to use tmobile csc (enable volte, wifi calling, etc) without unlocking bootloader or trigger Knox?

As far as I know, the 9750 is snapdragon variant, not exynos
Sent from my GM1917 using Tapatalk

Abu-khulzat said:
As far as I know, the 9750 is snapdragon variant, not exynos
Sent from my GM1917 using Tapatalk
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Could I buy n975f/ds (this one should be exynos) and flash tmobile csc?
Sent from my SM-G965F using Tapatalk

Not without root.
If your goal is VoLTE and Wi-Fi calling on T-Mobile, then there is no need to flash the CSC because T-Mobile has opened up their network for unlocked device. I am getting those functionalities on my dual sim S8+ and also Note 10+ without flashing anything.

meowone said:
Not without root.
If your goal is VoLTE and Wi-Fi calling on T-Mobile, then there is no need to flash the CSC because T-Mobile has opened up their network for unlocked device. I am getting those functionalities on my dual sim S8+ and also Note 10+ without flashing anything.
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So basically call tmobile and ask them to add the imei number into their system? What about Samsung Pay? Will it work without csc?
Sent from my SM-G965F using Tapatalk

Actually, both of my phone works without calling in. I think they opened it up sometime last month. Samsung Pay is going to be dependent on your firmware. I am using Australian firmware on S8+ and Taiwan firmware on my Note 10+ which allows me to use Samaung Pay in US (without the rewards program). If you root and flash CSC, Samaung Pay is gone forever due to tripping Knox.

meowone said:
Actually, both of my phone works without calling in. I think they opened it up sometime last month. Samsung Pay is going to be dependent on your firmware. I am using Australian firmware on S8+ and Taiwan firmware on my Note 10+ which allows me to use Samaung Pay in US (without the rewards program). If you root and flash CSC, Samaung Pay is gone forever due to tripping Knox.
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So I'm looking into the same, want dual SIM on T-Mobile service but with Samsung pay and like the us shop Samsung app.
From your last response seems like pay will work but no other Samsung apps like for cashback and award

joogle said:
So I'm looking into the same, want dual SIM on T-Mobile service but with Samsung pay and like the us shop Samsung app.
From your last response seems like pay will work but no other Samsung apps like for cashback and award
Click to expand...
Click to collapse
That's correct, Samsung Pay registers all my US cards but no US rewards program.

meowone said:
Not without root.
If your goal is VoLTE and Wi-Fi calling on T-Mobile, then there is no need to flash the CSC because T-Mobile has opened up their network for unlocked device. I am getting those functionalities on my dual sim S8+ and also Note 10+ without flashing anything.
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Click to collapse
hi,
how is your experience in term of data connection with Note 10+ exynos on T-Mobile network ? when i check details specification of Note 10+ exynos (N975f) on sammobile, it is missing a lot some of T-Mobile's LTE radio frequencies, https://www.sammobile.com/samsung/galaxy-note-10-plus/specs/SM-N975F/ . even way less than Note 8 exynos LTE bands .
is information on sammobile site incorrect or am i looking at wrong place ?
thank you !

mailistman said:
hi,
how is your experience in term of data connection with Note 10+ exynos on T-Mobile network ? when i check details specification of Note 10+ exynos (N975f) on sammobile, it is missing a lot of T-Mobile's LTE radio frequencies, https://www.sammobile.com/samsung/galaxy-note-10-plus/specs/SM-N975F/ . even way less than Note 8 exynos LTE bands .
is information on sammobile site incorrect or am i looking at wrong place ?
thank you !
Click to expand...
Click to collapse
I don't know if the F variant has fewer bands than the N variant but my N is only missing I think band 66 for Tmobile.
Also I'm not sure about wifi calling since that is not something locked down in their end anyway. The device needs to have software and CSC settings to enable it, both of which are absent on at least the N variant and historically F variant as well since neither device was meant for the USA market.
VoLTE works for me, but no wifi calling since both pieces are missing.

mailistman said:
hi,
how is your experience in term of data connection with Note 10+ exynos on T-Mobile network ? when i check details specification of Note 10+ exynos (N975f) on sammobile, it is missing a lot of T-Mobile's LTE radio frequencies, https://www.sammobile.com/samsung/galaxy-note-10-plus/specs/SM-N975F/ . even way less than Note 8 exynos LTE bands .
is information on sammobile site incorrect or am i looking at wrong place ?
thank you !
Click to expand...
Click to collapse
I do not have the Exynos Note 10+, I have the Snapdragon Note 10+ but it is also missing similar T-Mobile bands (66,71). You can check the LTE bands on the Samsung UK website and see that the phone covers majority of the T-Mobile bands. Due to the missing bands and lack of proper carrier aggregation support, you might experience slower speed and/or poor reception in rural area. But general usage is not reallg affected unless you are downloading a large file or constantly streaming in 4K.

meowone said:
I do not have the Exynos Note 10+, I have the Snapdragon Note 10+ but it is also missing similar T-Mobile bands (66,71). You can check the LTE bands on the Samsung UK website and see that the phone covers majority of the T-Mobile bands. Due to the missing bands and lack of proper carrier aggregation support, you might experience slower speed and/or poor reception in rural area. But general usage is not reallg affected unless you are downloading a large file or constantly streaming in 4K.
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thank you for your confirmation. i feel upgrading to N975f on t-mobile network will like be in a situation you pay more for less capable device. but it will depends on where you are going to use it most.
OOT, i am wondering why samsuck doesn't make one device with unlockable BL using exynos/SD to rule most (if not all) LTE frequencies, i.e like newer iphone A2104, to capture more customers if there is no technical boundaries
Kalm_Traveler said:
Also I'm not sure about wifi calling since that is not something locked down in their end anyway. The device needs to have software and CSC settings to enable it, both of which are absent on at least the N variant and historically F variant as well since neither device was meant for the USA market.
VoLTE works for me, but no wifi calling since both pieces are missing.
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on my Note8 n950fd/s, wifi calling & HD calling (VoLTE) work fine after CSC mod using tekhd CSC DETONATOR INT, tested on t-mobile and their relevant MVNOs (Metro, Simple). so it is just a matter of CSC configuration, isn't it ?

mailistman said:
thank you for your confirmation. i feel upgrading to N975f on t-mobile network will like be in a situation you pay more for less capable device. but it will depends on where you are going to use it most.
OOT, i am wondering why samsuck doesn't make one device with unlockable BL using exynos/SD to rule most (if not all) LTE frequencies, i.e like newer iphone A2104, to capture more customers if there is no technical boundaries
on my Note8 n950fd/s, wifi calling & HD calling (VoLTE) work fine after CSC mod using tekhd CSC DETONATOR INT, tested on t-mobile and their relevant MVNOs (Metro, Simple). so it is just a matter of CSC configuration, isn't it ?
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Click to collapse
I am guessing if Samsung can have their way, they would push their Exynos chipset everywhere but due to carrier restrictions they end up having Qualcomm in the US and China. I just wish they did all Qualcomm phones like Sony and have carrier aggregation tables from all of the regions available. I believe this is also a problem with iPhone as well but its less relevant for US users - iPhone that can do band 71 does not cover band 28, and only the HK version of the iPhone have physical dual sim.
The good news is that T-Mobile just recently open up their VoLTE, VoWifi to unlocked international so there is no need to jump through hoops (root and flashing CSC) to get those services. Just hoping AT&T would follow before they shutdown their 3G network.

mailistman said:
:
on my Note8 n950fd/s, wifi calling & HD calling (VoLTE) work fine after CSC mod using tekhd CSC DETONATOR INT, tested on t-mobile and their relevant MVNOs (Metro, Simple). so it is just a matter of CSC configuration, isn't it ?
Click to expand...
Click to collapse
Not just CSC config. If you look at his pack (his is what got me started on the N variant patch I made for the Note 8) there are a few Tmobile system apps that are taken from a US Tmobile rom. The only difference between the F and N in that sense (and the reason his zip wouldn't work on N devices) was that the F had a couple general vowifi files that were absent on the N, and for some reason the N's included digital TV system interfered with the VPN connection that Tmobile wifi calling creates. My N patch basically took the CSC files, the same Tmobile files as TeKHD's patch and those additional framework binaries which were already present in F firmware and deleted the Korean TV thing to stop it from blocking the wifi calling connection.
meowone said:
I am guessing if Samsung can have their way, they would push their Exynos chipset everywhere but due to carrier restrictions they end up having Qualcomm in the US and China. I just wish they did all Qualcomm phones like Sony and have carrier aggregation tables from all of the regions available. I believe this is also a problem with iPhone as well but its less relevant for US users - iPhone that can do band 71 does not cover band 28, and only the HK version of the iPhone have physical dual sim.
The good news is that T-Mobile just recently open up their VoLTE, VoWifi to unlocked international so there is no need to jump through hoops (root and flashing CSC) to get those services. Just hoping AT&T would follow before they shutdown their 3G network.
Click to expand...
Click to collapse
The reason they don't bring it here is that their exynos modem doesn't support CDMA (Verizon and sprint), whereas Qualcomm's do. Most of the world runs on GSM but since we've moved on to LTE and 5G hopefully this will no longer be an issue in the future.
Also, Tmobile didn't ever have those locked. My Note 8 got VoLTE stock, just no wifi calling for the above mentioned reason. Also for that reason you still need the Tmobile CSC patches to add those missing software pieces even on Pie.

Kalm_Traveler said:
Not just CSC config. If you look at his pack (his is what got me started on the N variant patch I made for the Note 8) there are a few Tmobile system apps that are taken from a US Tmobile rom. The only difference between the F and N in that sense (and the reason his zip wouldn't work on N devices) was that the F had a couple general vowifi files that were absent on the N, and for some reason the N's included digital TV system interfered with the VPN connection that Tmobile wifi calling creates. My N patch basically took the CSC files, the same Tmobile files as TeKHD's patch and those additional framework binaries which were already present in F firmware and deleted the Korean TV thing to stop it from blocking the wifi calling connection.
The reason they don't bring it here is that their exynos modem doesn't support CDMA (Verizon and sprint), whereas Qualcomm's do. Most of the world runs on GSM but since we've moved on to LTE and 5G hopefully this will no longer be an issue in the future.
Also, Tmobile didn't ever have those locked. My Note 8 got VoLTE stock, just no wifi calling for the above mentioned reason. Also for that reason you still need the Tmobile CSC patches to add those missing software pieces even on Pie.
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wow... thank you for the education.

I noticed that the CSC mod is for the note 9, Can anyone please direct me to a tutorial on how to set the scs for t-mobile on my note 10+, sm-n975f/ds?
This is the first I was able to find anything about the CSC mod using tekhd CSC DETONATOR INT. Thanks for mentioning it here!

On the Note 10 + (SM-N9750/DS) VOLTE and WiFi Calling work on the stock CSC (BRI or TGY).

Ok thanks for letting me know bro!
Sorry But I just looked through the CSC list and did not see anything listed that contains the phrase (BRI OR TGY)
Sorry I am such and noob and probably do not know what your referring to, ok
I noticed that a few the oem csc have (t-mobile) none are English would anyone of these still work? I am assuming yes, especially because before I put the Brazilian csc I remember glancing at the current firmware that was on the phone and it was not t-mobile, I don't remember exactly I think it was UK Vodafone and it still worked until I got to Brazil I suppose it started to malfunction because I did not have a Brazilian Sim card to use lol
ajsmsg78 said:
On the Note 10 + (SM-N9750/DS) VOLTE and WiFi Calling work on the stock CSC (BRI or TGY).
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Click to collapse

revized said:
Ok thanks for letting me know bro!
Sorry But I just looked through the CSC list and did not see anything listed that contains the phrase (BRI OR TGY)
Sorry I am such and noob and probably do not know what your referring to, ok
I noticed that a few the oem csc have (t-mobile) none are English would anyone of these still work? I am assuming yes, especially because before I put the Brazilian csc I remember glancing at the current firmware that was on the phone and it was not t-mobile, I don't remember exactly I think it was UK Vodafone and it still worked until I got to Brazil I suppose it started to malfunction because I did not have a Brazilian Sim card to use lol
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Click to collapse
In About Phone under Software Information. Here's mine. It was originally a BRI device but I flashed the TGY CSC on it hence is says TGY, TGY, TGY, BRI. Wifi calling and VOLTE work on either CSC.

Thanks for the reply.
Hmmmmmm. But on sammobile I still do not see TGY OR BRI
May I please ask one last question, where did you get this csc file from?
ajsmsg78 said:
On the Note 10 + (SM-N9750/DS) VOLTE and WiFi Calling work on the stock CSC (BRI or TGY).
Click to expand...
Click to collapse
ajsmsg78 said:
In About Phone under Software Information. Here's mine. It was originally a BRI device but I flashed the TGY CSC on it hence is says TGY, TGY, TGY, BRI. Wifi calling and VOLTE work on either CSC.
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Click to collapse

Questions about G9880 and T-Mobile

I have a bootloader unlocked, rooted Galaxy S20 Ultra SM-G9880 (Hong Kong version) that I am using on T-Mobile. However, I had some doubts about how it interacts with the various bands.
The phone does not support some of T-Mobile's LTE bands, and it does not seem to support any of their current 5G bands. Is there any way to change this with CSC changes or any other trickery?
Would AT&T be better for any of this?
When I use the Samsung band selector app, I see that NR B41 is supported. This is the Sprint spectrum that T-Mobile is repurposing, correct? Does that mean additional 5G and LTE coverage once the rollout is complete?
Another user was having problems enabling carrier aggregation. Is there a way of doing this?

Jonah50 said:
I have a bootloader unlocked, rooted Galaxy S20 Ultra SM-G9880 (Hong Kong version) that I am using on T-Mobile. However, I had some doubts about how it interacts with the various bands.
The phone does not support some of T-Mobile's LTE bands, and it does not seem to support any of their current 5G bands. Is there any way to change this with CSC changes or any other trickery?
Would AT&T be better for any of this?
When I use the Samsung band selector app, I see that NR B41 is supported. This is the Sprint spectrum that T-Mobile is repurposing, correct? Does that mean additional 5G and LTE coverage once the rollout is complete?
Another user was having problems enabling carrier aggregation. Is there a way of doing this?
Click to expand...
Click to collapse
You can't change to a US CSC on your device. Some users are reporting 5G works only on SIM2. Carrier Aggregation isn't compatible in the US with the SM-G9880. I have the Hong Kong variant on T-mobile and 4G LTE works fine.

varcor said:
You can't change to a US CSC on your device. Some users are reporting 5G works only on SIM2. Carrier Aggregation isn't compatible in the US with the SM-G9880. I have the Hong Kong variant on T-mobile and 4G LTE works fine.
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Would you happen to know if our imei works with 5g on t mobile? I just switched last month from att. On att, you would have to call and give an att imei in order for 5g to work and I'm wondering if t mobile is the same way or if it works out of the box with our imei.
Also, I have an SD card and seems like I cannot have a Sim on slot 2 and an SD at the same time, do you happen to know if an esim will get 5g?

m_reyna_16 said:
Would you happen to know if our imei works with 5g on t mobile? I just switched last month from att. On att, you would have to call and give an att imei in order for 5g to work and I'm wondering if t mobile is the same way or if it works out of the box with our imei.
Also, I have an SD card and seems like I cannot have a Sim on slot 2 and an SD at the same time, do you happen to know if an esim will get 5g?
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Click to collapse
That's a question for T-mobile. It's not a question of your IMEI, it's whether or not your device's available 4G and 5G bands are compatible with T-mobile. I don't know what model you have but if it's a US model eSim isn't available on S20 devices. Only Exynos devices have eSim capabilities.

varcor said:
That's a question for T-mobile. It's not a question of your IMEI, it's whether or not your device's available 4G and 5G bands are compatible with T-mobile. I don't know what model you have but if it's a US model eSim isn't available on S20 devices. Only Exynos devices have eSim capabilities.
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Click to collapse
I have the same model that's been on topic... The SM-G9880...

SM-G9880 isn't eSim enabled, only Exynos variants offer this. 5G may work, take it to your local T-mobile store and see if they can set it up. Often times information coming from a CSR over the phone isn't reliable. If it worked with AT&T on SIM 1 T-mobile it MAY work as well however many users have stated it only works on SIM 2. Even though T-mobile's 5G network has a larger coverage area they can't match the speed of AT&T's mmWave network.

varcor said:
That's a question for T-mobile. It's not a question of your IMEI, it's whether or not your device's available 4G and 5G bands are compatible with T-mobile. I don't know what model you have but if it's a US model eSim isn't available on S20 devices. Only Exynos devices have eSim capabilities.
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Click to collapse
I know that some people were trying to enable eSIM on rooted Snapdragon S20 Ultra devices. Did anything ever happen with that?

Jonah50 said:
I know that some people were trying to enable eSIM on rooted Snapdragon S20 Ultra devices. Did anything ever happen with that?
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Click to collapse
If you root the device I suppose it's possible to override an eSim block on the SM-G9880 but I'm not aware of anyone achieving it. The only Snapdragon variant which offers eSim at this time is the Galaxy Fold. I don't understand what the value of eSim is on a Dual SIM device. Even if you travel to a different country it's a simple choice, keep the SD Card in or use both SIM's and rely on internal memory for storage.

Did anyone try using BRI CSC to see if CA works in the USA?

Question Will UK variant work on AT&T?

I need unlocked/dual sim. If I buy the UK variant, SM-F926B/DS, will it work on AT&T network? Will I get 5G/LTE? Will it update? Thanks!

It should. The spec sheets for the phone does not show any variance in the radio's and frequencies they are compatible with in regards to where it's sold other than the ROM's with the carrier configurations pre-configured.

Doesnt the US version have a mmwave 5g antenna the UK version doesn't have?

If correct, how would this affect me? Thanks!

I would be very careful. In 2020 I bought unlocked Note 20 Ultra in Czech Republic and brought it to USA to be used on AT&T network. Unfortunately the 5G bands are not compatible and I didn't get 5G at all. Otherwise the phone works fine, you get LTE speeds and little bit spotty coverage. If you can live with that, you will be ok.

I use an international note 10+ n975f in USA on ATT and my line was shutoff last month because of a new company policy that will be fully in effect Feb 2022. Only u/u1 variants will work on their network...must have volte working and be a device provided thru ATT...not imported. I recommend a different carrier.
These phones will keep working on AT&T after the 3G network shutdown
AT&T will shut down its 3G network and require HD Voice support by February 2022. Check this list to see if your phone will make the cut.
www.xda-developers.com
It sucks. They did send me a free note 9, but...I need a new carrier.

Interesting. I’m on an unlocked, dual-SIM, Note 8, N950F which came from Singapore. I don’t remember how long I’ve had it, but I think it’s been around 5 years. It’s not a 5G device, but it is 4G/LTE and supports VoLTE. I think AT&T knows about it because I think I had to provide them with a S/N, M/N, and IMEI years ago. I’d like a 5G device and this one isn’t holding a charge for a full day anymore, but otherwise works fine on AT&T for now. I’d really like to stay with an unlocked, dual-SIM.

Question Help with Fold 3 5g problem.

Hi guys i've searched all over the net for a solution and i am starting to think that there is none.
I've bought a Samsung Fold3 5g SM-F926U1 and i think it is an US model. I live in Romania and i can't get 5g signal, only LTE. Tried everything that is normal, reset settings, update internet profile, switched on and off, selected 5G auto and/or GLOBAL.
Nothing works. Do you have any solution? Flash a different rom on it or something?
The phone is single sim, in Romania they sell the dual sim version
Thank you

The F926U supports these 5G bands:
SA/NSA/Sub6/mmWave (2, 5, 25, 41, 66, 71, 260, 261)
What 5G bands does your provider use?

darianmihalcea said:
Hi guys i've searched all over the net for a solution and i am starting to think that there is none.
I've bought a Samsung Fold3 5g SM-F926U1 and i think it is an US model. I live in Romania and i can't get 5g signal, only LTE. Tried everything that is normal, reset settings, update internet profile, switched on and off, selected 5G auto and/or GLOBAL.
Nothing works. Do you have any solution? Flash a different rom on it or something?
The phone is single sim, in Romania they sell the dual sim version
Thank you
Click to expand...
Click to collapse
u will not get 5g if its US phone and u live in europe
I had phone imported to me from US in england and i only got 4g
so i sold it

Flavio said:
The F926U supports these 5G bands:
SA/NSA/Sub6/mmWave (2, 5, 25, 41, 66, 71, 260, 261)
What 5G bands does your provider use?
Click to expand...
Click to collapse
I have no clue. I've been searching but there is not much information and the little that is i dont understand as it says only mhz not specific bands.
alleshi said:
u will not get 5g if its US phone and u live in europe
I had phone imported to me from US in england and i only got 4g
so i sold it
Click to expand...
Click to collapse
Thanks for the tip. I will probably do the same if there is no other way.

it is possible the software installed on it is not playing nice with the carrier in your region.
for example. In the US, each carrier decides which version of SW update to release to their customer, but if a user brings their own device that was with another carrier hence has a different software version than what is being used for the new carrier... the phone tends to have issues or not be able to update and such.
Other possibility is that the region you are in doesn't use the band that the phone supports (but this might be less likely in my opinion, but I'm no professional nor do I have experience with overseas inter-usability so I may be wrong).

Question SM-F936B/DS not having 5g support in Europe (estonia)

So like the title says, i dont have 5g in mt 2k€ phone, what gives? is samsung lazy with the firmware updates? or is the international unlocked phone actually hacing some locked bands? any way to unlock n75/n77 bands? i tried my sim in my australian netgear m6 pro in estonia in my location and it works perfeclty, other phones, older samsungs also work fine, but fold 4 just doesnt seem to find anything, besides competing isp tower and saying unknown frequency and 5g sa, if im not mistaken the int fold 4 should have everything? sa, nsa, all bands, etc? no? anyways maybe someone has a solution for me what firmware to flash or what to do, i rma'd my phone but i am 99.9% sure that samsung validated "repair" center wont be able to do anything like that as i have had different issues with different samsung phones before and they wont flash you anything than baltics firmware

Fold4 has 5g and it's working perfectly no need a firmware update. Witch csc are you using ? Witch firmware ? Did you check and search your provider in settings ? 5g/4g/3g/2g is selected ?
I'm not living in a big city in France and have great signal

5G from Orange Flex (Poland) works perfectly.

The same model. No issues. 5G is ok in Germany.

Same here. Latvia, 5G works fine.

the issue is in the firmware side, one of the operators doesnt work, every other operator 5g works, already got samsungs answer that they are working on a fix for it