Database Users

Samsung Galaxy S in Europe: different versions for different countries?

Hi!
I am from Portugal and I'm about to buy an unlocked Samsung Galaxy S in an online store in europe.
So, my questions are:
1. Is there any trouble buying outside Portugal? Is is true that each country has its own CSC version and that buying outside Portugal can have influence oin future firmware updates?
2. Or are all Samsung Galaxy S for european market all the same, and I can buy withou any fears?
I am a little confused about thoses CSC versions and all, so if you can explain it to me like I'm a 5 year old kid, i'd apreciate it!
Thanks
RM
PS: If you could explain to me what is that CSC anyway, it ould be great!

Devices will come with a CSC relevant to where you buy them, but I don't believe you need to stick with the CSC your device came with. Mine was I9000TMUJE6 (from T-Mobile UK) but I'm now using CSC I9000OXXJM1, which came with the JM2 firmware on the samsung-firmwares site. Everything still works fine.
It's possible you might have to re-enter your APN settings without the relevant CSC (I did a Titanium Backup restore, which probably did that for me), but that's no big deal.
I don't think any European ones are different to each other either, as far as I know.

Hi !
I've bought mine online from UK and now I use it in Israel without any problem whatsoever.
You really should read the big FAQ in the Dev section, It'll make your life easier.
Don't worry about the CSC file, you can always flash a Portugal specific through Odin (if such exists or will be available in your country later on).
Good luck mate.
Avi

Problem with Galaxy Apps in my region

I have bought an S7 Edge in Panama, where I am now living. It is an SM-G935F and has firmware G935FXXU1APD1 and CSC G935FUUB1APD1.
I have not yet rooted it as I want to wait a bit longer for warranty purposes.
My problem is that Galaxy Apps shows no paid apps and I would like to be able to get some for my Gear S2.
I understand from a developer I have contacted that Panama (and many other countries) are not on Samsung's list for paid apps. Google Play store has no problem letting me buy their apps. I am trying to understand what it is that is telling Galaxy Apps that I am not eligible.
I have tried using OpenVPN to change the location of my router to the UK and using just wifi on the phone. It does not help.
Previous Samsung phones have had different model numbers for Latin America but, as I said, my S7 Edge has the same model number as the UK one.
I see the UK firmware is G935FXXU1APD3 and CSC G935FBTU1APD3.
Is it likely to be the firmware or the CSC that is the problem? If it's the firmware, I can change this with Odin but is that likely to cause a problem?
Am I right that installing another region's stock firmware will not trip Knox?
Will I have to factory reset and reinstall all my stuff?
If it may just be the CSC, how can I change just the CSC to the UK or somewhere else acceptable to Samsung?
Am I right that the only disadvantage of changing the CSC is that the bands that the phone will recognize may be different and my 4G may stop working. (I haven't yet checked whether my 4G band - LTE APT 700Mhz (Banda 28) - is also on UK phones).
If it is not firmware or CSC, what else might it be preventing me getting access to Galaxy paid apps?
TIA.

Note 3 N9005 LTE 4G Doesn't Work, Do I need CSC change?

I've searched the forums and no one seems to have an exact FIX for my issue. So I have a Galaxy Note 3 N9005 32GB black version, the phone works well in 3G, never had an issue with it but now my network provider recently upgraded their plan and offers 4G internet but my phone doesn't want to connect. The provider offers 4G through BAND 1 2100MHz and Note 3 N9005 does have that band but it doesn't want to connect. It only works on 3G and when I enable Mobile Data it says H+! Not once has it connected to 4G!
I wanna mention that my friend has the exact same N9005 phone and his phone works on 4G all the time. Both of us have the same contract with the same network provider!
The only difference between our phones is the CSC region, we have different CSC. MY SIM card works in 4G on his Note 3 and his sim card doesn't work on 4G on my phone. (we exchanged the SIM cards for testing). So the problem is from my phone not from the SIM card. My phone is also original, its not a Chinese clone! Its confirmed with "Samsung Phone Info" app from Play Store.
Here's a few things I already did that some of you may be inclined to recommend to me:
1 - My APN is correctly set
2 - I am on official stock Android Lollipop 5.0 latest version and the phone is not rooted
3 - I already did a factory reset + wipe cache partition
4 - I saw others suggesting that people may not be in the range of a 4G tower! Not the case! Like I said, I switched the SIM cards with my friend on a public bench, out in the open, not even behind walls. Of course and his phone connects to 4G with his SIM card and also with MY SIM card while my phone doesn't connect to 4G with neither of these SIM cards.
5 - In Mobile Networks > Network Mode, my phone is of course already set on 4G/3G/2G (auto connect) and by the way, my friend's Note 3 says LTE/WCDMA/GSM (auto connect) instead of 4G/3G/2G with the same language set on both phones. Why?? I know its the same thing and I know 4G stands for LTE and 3G for WCDMA but why does it appear differently on these phones?
6 - I already went to Service Mode via *#0011# and manually selected BAND 1 LTE, it says "no service" or "emergency calls only" if I do that so I switched back to "Automatic"
So what the heck is going on? This phone is giving me headaches! I'm close to smashing my phone! After this I sweared to my self this is the last Samsung phone I ever buy. Probably I will be switching to Asus or Lenovo in the future. Or any other phone that does NOT have this CSC BS! This CSC thing is a complete rip-off!
Im thinking that the problem could be my CSC perhaps?? My friend's Note 3 N9005 has a COA CSC (Cosmote Romania) and I have a XEF CSC (Unbranded France). Both phones are factory unlocked and work in all networks. They are not branded by any phone maker! His COA CSC is unbranded. Yes it belongs to a phone retailer but that retailer doesn't brand their phones, no bloatware, no SIM lock. If you buy a phone from Cosmote (with COA CSC) it works in all networks, unlike Vodafone or Orange who lock their phones and brand them.
What should I do? Should I attempt to change my CSC? If so, how? My phone warranty has expired a long time ago, so I shouldn't care that much about triggering Knox though not triggering it would be preferred.
Which path should I pursue? Should I simply use ODIN and flash a STOCK COA CSC (Cosmote Romania) or STOCK ROM CSC (Unbranded Romania) from SamMobile.com with the latest version of Lollipop? Would this trigger Knox? Will it affect my all networks unlocked status? I mean, I won't have to unlock it after that, right???
OR should I ROOT my phone, change CSC, then UNROOT? If so do you know of any method to root Lollipop 5.0 without triggering Knox?
What do you guys think? Whats the problem with my phone? Why doesn't it work on 4G? Because of CSC? Or is it something else?
Thanks!

The best way to confirm the model # would be to boot into Odin mode and look there.

audit13 said:
The best way to confirm the model # would be to boot into Odin mode and look there.
Click to expand...
Click to collapse
What do you mean? Can you be more specific? I already told you my model number, its N9005!! Do you want a screenshot?

Dear OP, have you tried the other Samsung secret code? *#2263# then program it to accept LTE only.
That's the only foolproof way to get the Note to connect to LTE. In my country I only get 2-3 of the 5 LTE bars, so the Note wouldn't automatically connect to LTE or immediately stoop down to 3G through the settings. That specific secret code and setting is LITERALLY THE ONLY WAY TO GET MY NOTE 3 TO CONNECT TO LTE IN MY EXPERIENCE.
If that still doesn't get your phone to run LTE, either your carrier is whack or your phone is, and no amount of Cyanogenmod can fix it because your hardware modem inside the phone might be whack and you can't really do anything if that's the case...
Sent from my Galaxy Note 3 using XDA Labs

Odeira.Oloap said:
Dear OP, have you tried the other Samsung secret code? *#2263# then program it to accept LTE only.
That's the only foolproof way to get the Note to connect to LTE. In my country I only get 2-3 of the 5 LTE bars, so the Note wouldn't automatically connect to LTE or immediately stoop down to 3G through the settings. That specific secret code and setting is LITERALLY THE ONLY WAY TO GET MY NOTE 3 TO CONNECT TO LTE IN MY EXPERIENCE.
If that still doesn't get your phone to run LTE, either your carrier is whack or your phone is, and no amount of Cyanogenmod can fix it because your hardware modem inside the phone might be whack and you can't really do anything if that's the case...
Sent from my Galaxy Note 3 using XDA Labs
Click to expand...
Click to collapse
I have already explained that there is nothing wrong with my carrier because I switched my SIM card with my friend's phone who has exactly the same N9005 model and it perfectly works on 4G on his phone. The only difference I could find in our phones is the CSC.
As for the other suggestion you sent me, I already said that I've been to SERVICE MODE. The code you've given me does nothing on my phone but as I can see from your screenshots, it gets you to SERVICE MODE. I've already been there through *#0011# switched to LTE/GSM only or LTE/WCMA only and I've explained that it still doesn't do anything.
Can someone please answer me this? Would it help if I change the CSC? Could this be the problem I'm having???

It may help if your CSC is changed it can do no harm .

JJEgan said:
It may help if your CSC is changed it can do no harm .
Click to expand...
Click to collapse
Ok, thanks! So how do I do this?
My phone warranty has expired a long time ago, so I shouldn't care that much about triggering Knox though NOT triggering it would be preferred.
As far as I know there are 2 methods to change the CSC. So how should I do it?
Should I simply use ODIN and flash a STOCK COA CSC (Cosmote Romania) or STOCK ROM CSC (Unbranded Romania) from SamMobile.com with the latest version of Lollipop? Would this trigger Knox? Will it affect my all networks unlocked status? I mean, I won't have to unlock it after that, right???
OR should I ROOT my phone, change CSC, then UNROOT? If so do you know of any method to root Lollipop 5.0 without triggering Knox?
Thanks

Booting into download mode will confirm the model #. Looking under the ROM's settings is not guaranteed to display the proper model #.
Both phones are running the same ROM, bootloader, and modem?

audit13 said:
Booting into download mode will confirm the model #. Looking under the ROM's settings is not guaranteed to display the proper model #.
Both phones are running the same ROM, bootloader, and modem?
Click to expand...
Click to collapse
Yes confirmed, same model, same baseband, same everything. The only thing different is the CSC. So whats next?

Did you try changing the csc by dialling *#272*enter IMEI#? Not sure if this method will work for your model of note 3.

audit13 said:
Did you try changing the csc by dialling *#272*enter IMEI#? Not sure if this method will work for your model of note 3.
Click to expand...
Click to collapse
No I haven't I'm trying now. Wow if this works Im gonna buy you a beer!

It doesn't work! just my luck! I entered this code: *#272*IMEI-number# and pressed call button, it says "Connection problem or invalid MMI code."

I just tried it on my Note 2 and S4 and it works. Maybe the phone is not running a multi-csc stock ROM?
I don't have a note 3 to try.

audit13 said:
I just tried it on my Note 2 and S4 and it works. Maybe the phone is not running a multi-csc stock ROM?
I don't have a note 3 to try.
Click to expand...
Click to collapse
Perhaps the code you gave me only works on older version of Android such as KitKat or whatever you have on Note 2... anyway Im using Samsung Phone Info app from Play Store and my CSC is XEF and under Available CSC Codes there is a bunch of CSC codes. Here I've made a sccreenshot:
From as far as I know there are only 2 ways to change the CSC: root or flash a different stock ROM

Yes, the note 2 has kit kat but the s4 is running stock lollipop.

audit13 said:
Yes, the note 2 has kit kat but the s4 is running stock lollipop.
Click to expand...
Click to collapse
Well unfortunately the code doesn't work on my phone. Anyway if you know for a fact, could you tell me this? Is it safe to reflash another STOCK rom from sammobile? Will it affect my phone in any way?
Thanks

Yes, it is safe to flash stock ROMs from sammobile.com.

I just flashed a local stock ROM and guess what, when I go to Phone Info app it still shows the same CSC! I still have XEF CSC, how can this be? Why hasn't the CSC change?

After flashing the stock rom, did you try the csc code I mentioned? Same thing happens when I flash a Rogers carrier rom over a Telus carrier rom. Once I select telus as the carrier from the csc menu, the Rogers app will disappear and the Telus app appears.

Ok after further researching I found a lot of interesting stuff so I'm gonna write it all down for other people who may need it in the future.
1 - If you have a multi-CSC phone and you flash a different CSC but which is in your "Available CSC" list but which you cannot choose or change without root, your CSC will NOT change. For example: I have flashed ROM CSC (Open Romania) on my XEF CSC (Open France) and guess what after the flash was successful and all, the CSC didn't change! It was still on XEF because ROM was in my "available list".
2 - If you try to flash a different CSC which is NOT in your list, then Odin will FAIL and softly brick your phone. For example: I got my phone bricked, trying to flash 2 CSCs which are not in my "available list": COA (Cosmote Romania) and DBT (Open Germany). In order to fix this issue all you have to do is to reflash YOUR OWN CSC, in my case it was XEF. Or you can even flash one of those CSC which are "available" or compatible so to say, such as "ROM" for example.
This is the firmware I currently have on my phone:
http://www.sammobile.com/firmwares/download/61565/N9005XXUGBOK6_N9005OXXGBOJ2_XEF/
These are the two firmwares I tried to flash on my phone, hoping to replace XEF with:
http://www.sammobile.com/firmwares/download/63441/N9005XXUGBOK6_N9005COAGBOK1_COA/
http://www.sammobile.com/firmwares/download/61464/N9005XXUGBOK6_N9005DBTGBOI1_DBT/
BOTH FAILED in Odin!
There are ONLY 2 ways to change the CSC on newer Samsung phones. Most guides online are based on KitKat 4.4 or older guides but for 5.0 Lollipop or even NEWER there are ONLY 2 ways to change your CSC:
1 - Root your phone and change the CSC. There are plenty of guides on how to do that online.
2 - You can avoid rooting your phone and use Odin instead, BUT accompanied by your stock firmware, you will also have to find and use a PIT file because Samsung as of 5.0 Lollipop uses different partitions for all the different regions. HOWEVER messing with PIT files is super risky and it can permanently brick your phone so its just better to root your phone instead! Dont waste your time trying to flash different regions/csc which is not in your available csc list, it won't work!
What can I say? Samsung is trying hard to block their users from changing their CSC... Why? They prefer their users buy new phones. Its pure greed yes but its what it is... For me, this was the last Samsung phone I ever buy. Im truly disappointed.

G950FD from Iran (THR) with pre-installed Persian/Iranian Calendar

I bought an unlocked G950FD which turns out to be CSC THR (part of OXM) so should mean it's from Iran. I have found it generic enough in almost every way to be used internationally (in English) with two noticeable exceptions that i'm trying to solve.
1) there is pre-installed Persian Calendar in the OS which appears after the Gregorian date on the AOS and lock screen. I also noticed this extra date appearing on the Samsung Calendar app under the western date, but i don't use this app at all so can easily ignore. The AOS and lock screen is seen all the time and would displays: "MON, JUNE 5 (KHOR 15)". I looked through every settings on the phone and many forums online, and there is no software way to turn this off.
I thought a potential solution would be to replace this stock ROM with another region since any of the multi-CSC OXM firmwares should be compatible with the phone. So I tried to flash another region using Odin. I tried Singapore (SIN and STH) and completely reset/wiped the phone two separate times. However, despite flashing a large (almost 6GB) file onto the phone it still remains in THR when i looked in settings. I guess I misunderstood the purpose of different firmware regions, I thought i would be changing my phone's existing firmware to another region and get a different set of default apps and localization behavior. But the Persian date is still there on all the same screens.
Am I flashing the rom incorrectly? Is there some setting that i omitted that would give me the desired result of a Singapore OS? Any other ways to change CSC and get rid of unwanted parts of a regional firmware?
2) Another problem is when i receive calls on my local sim card, the phone number shows up without the country code, but if i store my numbers (on Google contacts) in "+<country code> <phone number>" format then the contact is not linked to the incoming call.
Apparently this is fairly common with international phones being used in another market. There is a workaround where i can edit my numbers on google to not have any numerical country codes but instead use the flag drop-down menu on google to indicate country associated with the number. I'm ok with that solution but is there another way? Would flashing a regional firmware that is my location solve this? The region that i intend to use the phone is not part of the OXM multi-CSC list of countries since they only sell the snapdragon variant here.
I would like to find solutions that would avoid root and custom roms, but if that is the only option here, i am not against going down that route.
Thanks a lot in advance.

My eventual solution and what i've learned.
So as i described above, i tried to flash many different versions of G950FD or G950F firware with multi-CSC OXM, but never saw my CSC change from THR. Nothing changed on my phone despite installing large files through odin which was always confusing to me. For the record, i tried BTU (UK), STH (Singapore), and SIN (Singapore) which are all part of the OXM.
I learned from another forum that the sim-card installed matters, so i was just trying different non-middle-east regions by picking UK or Singapore but my actual home region does not support this model/cpu variant. I don't have a sim-card from any OXM regions, only Hong Kong and US ones.
Then i found an old Australian (Optus) sim card from a trip and found a G950F firmware version with CSC OPS on Updato. Not part of CSC OXM but same PDA/Phone version and was told it's safe to flash. When i flashed that firmware with the AU sim card installed, i got the AU OS and all the old regional apps were gone. I got some Australian ones but nothing i can't uninstall. My caller ID problem also seem to be fixed. So i consider the problem fixed.
In all of this, the PDA version numbers were always the same (AQDG), so i'm still a bit unclear as to what the CSC file is specifying and doing.
Am i correct to assume that multi-CSC OXM firmware contained regional apps/settings for all the various regions but without a sim card installed to tell it which one to pick, it kept selecting the factory region of THR? And when i flashed the Optus firmware, did i really need the sim-card installed? Would it have changed the firmware to OPS because it's outside the multi-CSC OXM group?

You live in Hong Kong, right ?
I do too, and have a UAE S8, and Samsung Pay doesn't work.
Does your working around things allow you to use Pay, or you get stuck on the splash screen as well ?

tarkil said:
You live in Hong Kong, right ?
I do too, and have a UAE S8, and Samsung Pay doesn't work.
Does your working around things allow you to use Pay, or you get stuck on the splash screen as well ?
Click to expand...
Click to collapse
Yes i live in HK, so with the AU Optus Firmware I got a AU version of Samsung Pay with all AU ads and suggested businesses. I can get past the splash and login using my normal Samsung Account, which shouldn't have a region. BUT so far i haven't had any success adding any of my HK credit cards, i assume it's a version compatibility issue. There is no way to pick which regional version of Samsung Pay on the Play Store, so i guess it looks at your phone's origin to determine that part of the app.
I am not that keen to use Samsung Pay, but of course interested to know if it is possible. It says to call the banks to get my credit cards added, so maybe there is still a chance and i will post if i do succeed.
Do you think Samsung Pay is particularly good for HK? Would using Android Pay be comparable here? I'm not that experienced with mobile payment apps in the past. Seems like the membership card storage function will still work on my Samsung Pay so at least i have that and can slim down the wallet a bit.

Hey there buddy,
Finally found a thread that represents my problem also, in my case i have a s8 G950FD that shows the same thing on my lockscreen, by me it shows (KHOR18)!
Is there any way around it, i mean a fix?? I would greatly appreciate any help

Yes that's the Iranian calendar date so the day will increment everyday. Khor is abbrev for the current month.
Yes I have a solution (read my second post in thread) but involves flashing with a sim card and 950f or 950fd firmware of the same region as the sim card. You will need to reset and erase phone data.
If you need help flashing stock firmware there is a long thread on this forum and where I found the answer about how the sim card installed might make difference.
What region/sim are you currently trying to use your s8?

derf574 said:
Yes that's the Iranian calendar date so the day will increment everyday. Khor is abbrev for the current month.
Yes I have a solution (read my second post in thread) but involves flashing with a sim card and 950f or 950fd firmware of the same region as the sim card. You will need to reset and erase phone data.
If you need help flashing stock firmware there is a long thread on this forum and where I found the answer about how the sim card installed might make difference.
What region/sim are you currently trying to use your s8?
Click to expand...
Click to collapse
Hey there again,
Thank you very much for the time. I am in SE Europe, to be more precise Republic of Kosovo. My SIM is from Kosovo ( we are considered i believe to be in Europe carrier wise)
I do need help flashing the phone as i have no experience whatsoever i just recently switched from Iphone to Samsung, this being said i must also mention the fact that i would definitely need help. I dont want to mess up the phone i just got it like 2 days ago

Things to consider:
- You can flash both 950F and 950FD firmware on your 950FD.
- You need to find your desired firmware. And that region needs to match your sim card, use Updato or SamMobile but the firmware package is a >3GB file and takes a while to download. Make sure you only look for versions for model 950F or FD.
- You will need to download Odin and Samsung usb drivers to flash the firmware onto your phone. Follow the thread "OFFICIAL STOCK Firmware-update (Odin) thread Samsung GALAXY S8 SM-G950F" for the guide.

Colonel_Kosova said:
Hey there again,
Thank you very much for the time. I am in SE Europe, to be more precise Republic of Kosovo. My SIM is from Kosovo ( we are considered i believe to be in Europe carrier wise)
I do need help flashing the phone as i have no experience whatsoever i just recently switched from Iphone to Samsung, this being said i must also mention the fact that i would definitely need help. I dont want to mess up the phone i just got it like 2 days ago
Click to expand...
Click to collapse
If you decided to go the "SIM card CSC" method then follow this step by step:
https://www.sammobile.com/forum/showthread.php?t=37711
But I personally think you should do it through flashing a firmware with odin but properly and pay attention to step 6:
https://www.sammobile.com/forum/showthread.php?t=37508
Hope they help you resolve your issues.
Good luck.

samteeee said:
If you decided to go the "SIM card CSC" method then follow this step by step:
https://www.sammobile.com/forum/showthread.php?t=37711
But I personally think you should do it through flashing a firmware with odin but properly and pay attention to step 6:
https://www.sammobile.com/forum/showthread.php?t=37508
Hope they help you resolve your issues.
Good luck.
Click to expand...
Click to collapse
Again thank you very much for everything i do have one last question please. Regarding the step 6 should i do it or not i am not sure

Colonel_Kosova said:
Again thank you very much for everything i do have one last question please. Regarding the step 6 should i do it or not i am not sure
Click to expand...
Click to collapse
Yes, if you are changing country/code of CSC, then the system needs to recalculate the partitions.
And don't forget no short cuts! Every step should be done.
Good luck.

ooo man this things is killing me now the problem i have after i have rooted the phone is that the computer wont recognize my phone in download mode ??????????

Hey Peeps,
Small update on how things are for the time being. I have been following all steps as described with odin. Last night i had issues with my laptop not recognizing my phone in download mode, got rid of this issue by changing laptops. Once the procedure was finished i ended up with the same thing on my phone???
I have flashed a european software ( from france) but still no go on removing or changing the region!!!
To be honest dont really know what to do again help is appreciated since that date thing is really annoying

Any other way to get rid of khor on aod/aos
Went through the whole thread. Def not keen to flash or run csc. Any other way to turn off khor date from aod? Help !!!

Hey there all, again just a quick thank you for the tips and tricks. To be honest i dont really know what i did exactely but it worked for me.
What did the change by me was the first step, namely: https://www.sammobile.com/forum/showthread.php?t=37711
i really cant tell how but it worked ( used a sim card i have from Slovenia)
till the next one thank you again

Country code doesn't matter anymore?

Hi,
I noticed recently that the Galaxy S10(+) and its firmwares are quite similar, if not coming from a network operator.
To illustrate this, I would say for example BTU which is stock UK has the same PDA and CSC numbers than French stock XEF.
How is this possible?
What's more, the phone seems to automatically know which code to use — after flash it will display on the 'About' tab the code related to your country, independently from what country-related S10 firmware you decided to download.
It can't be fooled anymore because as far as I remember you could flash other firmwares with different country codes so that you would sometimes get updates faster.
Or I might be just wrong.

@ThomasM6
Regardless of the branding, the available network bands are similar, if not exact, through Europe, Middle East, Africa, Southeast Asia and Oceania so that a one size fits all approach works on a hardware-level.
This same methodology is in place when it comes to firmware.
To an extent.
To demonstrate my point, I've attached a file called 'product.map' which I've extracted.
(I had to rename it to 'product.txt')
Inside that file you will see almost every major telecom company across EMEA and APAC listed.
It is using this file, alongside a combination of .info. txt., .dat, .xml and others across the operating system, to isolate the Carrier based on the SIM card inserted.
If it does NOT locate the appropriate telecom, it defaults to native country where it was intended to be sold.

ThomasM6 said:
Hi,
I noticed recently that the Galaxy S10(+) and its firmwares are quite similar, if not coming from a network operator.
To illustrate this, I would say for example BTU which is stock UK has the same PDA and CSC numbers than French stock XEF.
How is this possible?
What's more, the phone seems to automatically know which code to use — after flash it will display on the 'About' tab the code related to your country, independently from what country-related S10 firmware you decided to download.
It can't be fooled anymore because as far as I remember you could flash other firmwares with different country codes so that you would sometimes get updates faster. Or I might be just wrong.
Click to expand...
Click to collapse
A number of users have stated the software now matches the SIM's CSC so flashing the device is no longer necessary.

Some are still having trouble selecting the correct active CSC in a multi CSC firmware
https://forum.xda-developers.com/galaxy-s10/how-to/change-csc-code-firmware-sim-card-t3907375