Question CSC change or firmware options for S918N (Korean) S23 Ultra? - Samsung Galaxy S23 Ultra

I bought a S918N in Korea before realizing Samsung Pay doesn't work in the USA. I've already tried changing the CSC but it fails whether I choose "phone supported CSC" or "or your choice". Anyone know why it fails? What are my options for getting Samsung Pay to work?

bryanhayn said:
I bought a S918N in Korea before realizing Samsung Pay doesn't work in the USA. I've already tried changing the CSC but it fails whether I choose "phone supported CSC" or "or your choice". Anyone know why it fails? What are my options for getting Samsung Pay to work?
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US CSC is not supported by this model and will never be

Related

Can the Snapdragon S9+ (G9650) be used for VoLTE in the Netherlands?

I recently moved to the Netherlands and got a contract with Tele2, a 4G provider that offers VoLTE. However, my Latin American, Snapdragon-based S9+ (SM-G9650) didn't show the VoLTE option under Settings -> Connections -> Mobile Networks. That was with a ROM from Panama. In the meantime, my wife's S8 (SM-G950F) did show it.
I tried installing a G9650 ROM from Colombia since they have a mobile provider with VoLTE, but nothing changed. I then tried a Hong Kong ROM (where pretty much *all* providers offer VoLTE), and the button appeared in the notifications area. However, when I try to enable it I get "VoLTE is not supported by your current software version".
Any suggestions? Thanks
VoLTE is really a country specific feature. Hong Kong version won’t support China’s Volte, though China Mobile operates both in Hong Kong and mainland China
从我的 iPhone 发送,使用 Tapatalk
kevinfan1990 said:
VoLTE is really a country specific feature. Hong Kong version won’t support China’s Volte, though China Mobile operates both in Hong Kong and mainland China
从我的 iPhone 发送,使用 Tapatalk
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Ouch... Unfortunately the SM-G9650 isn't even sold by European carriers. Any ideas?
Thanks
If you're going to live on the Netherlands sell it and buy the European version or stick with the SD without VoLTE.
victorbayas said:
If you're going to live on the Netherlands sell it and buy the European version or stick with the SD without VoLTE.
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Is there no ROM I can install on my Snapdragon S9+ that will allow me to use VoLTE in the Netherlands? I see no reason for the phone to be incompatible if it supports all the bands, etc.
Thanks
Zoide_ said:
Is there no ROM I can install on my Snapdragon S9+ that will allow me to use VoLTE in the Netherlands? I see no reason for the phone to be incompatible if it supports all the bands, etc.
Thanks
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Can you download Phone Info Samsung and tell us which CSC is your phone currently using?
victorbayas said:
Can you download Phone Info Samsung and tell us which CSC is your phone currently using?
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Active CSC Code: TPA
CSC Country: Panama / PA
Mobile Operator: Tele2 NL / 20402
Remove your SIM Card, do a Hard Reset, boot the device, insert your SIM Card then it should factory reset again and start with another CSC.
victorbayas said:
Remove your SIM Card, do a Hard Reset, boot the device, insert your SIM Card then it should factory reset again and start with another CSC.
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Does it really change the CSC even I am looking for a solution for the same problem
anuj2yv said:
Does it really change the CSC even I am looking for a solution for the same problem
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It's supposed that it'll do.
Did this work for anyone? (Remove the sim, insert etc) I'm aiming to get VoLTE on tmobile and need to change the CSC code as well.
victorbayas said:
Remove your SIM Card, do a Hard Reset, boot the device, insert your SIM Card then it should factory reset again and start with another CSC.
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That wont work, the CSC is embedded into the firmware for that specific region. Unless you change the firmware to the region you're in you're out of luck. In some cases the CSC is also carrier specific even in the same region.

Changing CSC of an unlocked S9+ G965U

Hello everyone. I'm struggling to find a starting point on how to change the csc of my phone. I haven't changed a csc before and there are lots of conflicting info on the forum. I'm familiar with Odin and flashing ROMs in general.
I bought my phone from the US, and it has the AT&T G65USQU1ARBI (unlocked) software, however, I live outside the US and I want to change the CSC. I want Samsung Pay to show me offers from my region.
Where to start?
Should I flash a different ROM straight away? and would that change my CSC? Obviously, I don't want any of the AT&T features, so I don't mind changing the ROM.
Is there a ROM that I can flash that supports multi-CSC options? The Samsung variant in my region is Exynos, so can I still change the CSC to my region with my Snapdragon S9+ ?
Thanks guys.
EDIT: Just learned about the snapdragon root dilemma. So I guess the root option will be dismissed.
I bought a s9 + G965F with csc Singapore but I use in Brazil 4G network is ok but I can not use voLTE and Wi-Fi calling can someone help me? version of the OXM operator.

Change CSC from one country to another

Recently i bought an S21 from another country because its cheaper and has more internal space than the one sold here in my country, the thing is that when i tried to change the csc to the one of my country it didnt change, the one installed is UPO and i want to put ZTO, i saw some tutorials using samkey but i dont want to pay to change my csc, is there a way to do it without tripping knox? I dont have warranty because i bought in another country but if something goes wrong and i have to go to samsung to do some repair i want it to have my country csc
My model is the G991B
wiebbelling said:
Recently i bought an S21 from another country because its cheaper and has more internal space than the one sold here in my country, the thing is that when i tried to change the csc to the one of my country it didnt change, the one installed is UPO and i want to put ZTO, i saw some tutorials using samkey but i dont want to pay to change my csc, is there a way to do it without tripping knox? I dont have warranty because i bought in another country but if something goes wrong and i have to go to samsung to do some repair i want it to have my country csc
My model is the G991B
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Click to collapse
Hi
Check here , but unless you have not updated your phone since Feb. they may not work, try anyhow.
Samkey or root may be your only options left.....
MAX 404 said:
Hi
Check here , but unless you have not updated your phone since Feb. they may not work, try anyhow.
Samkey or root may be your only options left.....
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I updated it today lol, will try this later to see if it works thx
wiebbelling said:
I updated it today lol, will try this later to see if it works thx
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Of course , another variant of Murphy's law......
Well there is only one way to find out
wiebbelling said:
Recently i bought an S21 from another country because its cheaper and has more internal space than the one sold here in my country, the thing is that when i tried to change the csc to the one of my country it didnt change, the one installed is UPO and i want to put ZTO, i saw some tutorials using samkey but i dont want to pay to change my csc, is there a way to do it without tripping knox? I dont have warranty because i bought in another country but if something goes wrong and i have to go to samsung to do some repair i want it to have my country csc
My model is the G991B
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Click to collapse
What is csc and what does it do? I bought s21 from the US and I live in Qatar. does it help me anyway getting esim working? G991U1
mohawahba said:
What is csc and what does it do? I bought s21 from the US and I live in Qatar. does it help me anyway getting esim working? G991U1
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Click to collapse
Hi
For your first question read here
For the second question , not too familiar with the U1 version or the services available in Qatar , The right CSC and if the service is available in the carrier you are using it would enable esim

[HELP] Flashing my Galaxy S21 5G Korean Variant SM-G991N (CSC: LUC) to SM-G991B

Hello, I'm newbie and I just want to ask if I can flash another Firmware on my device, I'm currently on PH where s21 being sold here is SM-G991B (CSC: XTC). I want to remove the bloatwares and some samsung apps are still on Korean Language. I'm using an SM-G991N Model with LUC CSC. If possibly, I want to change it to XTC CSC, I already tried using Samkey but it failed. Should I flash the whole firmware SM-G991B on my device? It's same processor as my Korean Variant phone which is Exynos.
Hope anyone can help me. Thank you!
You will trip Knox if you try that.
See https://forum.xda-developers.com/t/...lobal-or-nordic-on-s21.4572237/#post-88398865
traman124 said:
You will trip Knox if you try that.
See https://forum.xda-developers.com/t/...lobal-or-nordic-on-s21.4572237/#post-88398865
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It there any other way? coz Korean variant updates takes so long. OTA/Smart Switch I still don't receive the latest security updates.
Not as far as I know... Unless you want to use a custom ROM.

SM-G991N (korean S21 5G) not compatible with esim

I just bought S21 from Korea, and it's not compatible with esim. Is there any way to make it compatible with esim? I already tried samfw (to change csc to INU). will changing csc help? if not, will rooting help?

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