Develop Bugs

Samsung Pay on Note10+ (International device) from Ebay

So there's discussion that if we purchase an International Note 10 or Note 10+ from ebay, we may not be able to use Samsung Pay in the United States. The reason being, the Note will be preloaded with Pay App that's from that region. Had anyone been able to uninstall the pre-installed app and reload the app via apkmirror to get Samsung Pay to work in the US?
Saw a post on the s8 (https://forum.xda-developers.com/galaxy-s8/help/how-add-samsung-pay-to-sm-g950fd-dual-t3600699) which talked about this exact problem. Not sure if it's the same here and if anyone got to work around the region problem. Not talking about U firmware.

twe90kid said:
So there's discussion that if we purchase an International Note 10 or Note 10+ from ebay, we may not be able to use Samsung Pay in the United States. The reason being, the Note will be preloaded with Pay App that's from that region. Had anyone been able to uninstall the pre-installed app and reload the app via apkmirror to get Samsung Pay to work in the US?
Saw a post on the s8 (https://forum.xda-developers.com/galaxy-s8/help/how-add-samsung-pay-to-sm-g950fd-dual-t3600699) which talked about this exact problem. Not sure if it's the same here and if anyone got to work around the region problem. Not talking about U firmware.
Click to expand...
Click to collapse
You have to change the csc code to one of the usa firmwares to use samsung pay
Sent from my SM-N975F using Tapatalk

AlEjAnDrO812 said:
You have to change the csc code to one of the usa firmwares to use samsung pay
Sent from my SM-N975F using Tapatalk
Click to expand...
Click to collapse
If you read that thread, this was not the case. He was able to use it by installing the framework and app for the USA version.
On my own Korean Note 10+ 5g I tried installing the USA apk but it still keeps saying it can't connect to server.

Check if your csc is from a country that Samsung Pay supports, in the same thread someone post the steps for change the csc. Maybe that can make yours work.
Sent from my SM-N975F using Tapatalk

My phone is from Taiwan (BRI) and my previous phone was from Hong Kong (TGY) and Samsung Pay worked fine for both in Canada, right out of the box. I did not change the CSC, etc.

Yeah I don't think that has anything to do with it, given that s8 thread. The OP in that one said he had to sideload the framework and app for USA to work, but I don't see how we could do that since the framework doesn't let me uninstall. As mentioned I tried side loading the USA version of the app from apk mirror but it still failed to connect to server and now tells me I need to use a Korean SIM card to use Samsung Pay.

On my note 8 all the rewards are in Chinese, but it works fine for actually paying for things

waqqas.khokhar said:
My phone is from Taiwan (BRI) and my previous phone was from Hong Kong (TGY) and Samsung Pay worked fine for both in Canada, right out of the box. I did not change the CSC, etc.
Click to expand...
Click to collapse
Hong Kong and Taiwan are supported CSC for samsung pay, you can see the list of country here: https://www.sammobile.com/samsung-pay
---------- Post added at 05:59 AM ---------- Previous post was at 05:50 AM ----------
Kalm_Traveler said:
Yeah I don't think that has anything to do with it, given that s8 thread. The OP in that one said he had to sideload the framework and app for USA to work, but I don't see how we could do that since the framework doesn't let me uninstall. As mentioned I tried side loading the USA version of the app from apk mirror but it still failed to connect to server and now tells me I need to use a Korean SIM card to use Samsung Pay.
Click to expand...
Click to collapse
I have and international version Note10+, buy it from samsung miami, but the firmware installed from factory in the phone was from Panama, Every time I try to launch samsung pay with a US sim card it stucked on the connecting screen. I tried to uninstall and install the usa version, but the youy cant uninstall the framework without root. I change the firmware for one coming from the country that support Samsung Pay and changed the CSC by doing it. Now Samsung Pay works and use to pay at stores.
This is only my experience, maybe you can find another way. It you find it please post it because I want a better solution.
Hope that this post help in some way.

AlEjAnDrO812 said:
Hong Kong and Taiwan are supported CSC for samsung pay, you can see the list of country here: https://www.sammobile.com/samsung-pay
---------- Post added at 05:59 AM ---------- Previous post was at 05:50 AM ----------
I have and international version Note10+, buy it from samsung miami, but the firmware installed from factory in the phone was from Panama, Every time I try to launch samsung pay with a US sim card it stucked on the connecting screen. I tried to uninstall and install the usa version, but the youy cant uninstall the framework without root. I change the firmware for one coming from the country that support Samsung Pay and changed the CSC by doing it. Now Samsung Pay works and use to pay at stores.
This is only my experience, maybe you can find another way. It you find it please post it because I want a better solution.
Hope that this post help in some way.
Click to expand...
Click to collapse
Which model do you have and which country's firmware/CSC did you change it to, to get Samsung Pay to work? This information will save many people from the agony of hunting down functional firmwares for Samsung Pay.

waqqas.khokhar said:
Which model do you have and which country's firmware/CSC did you change it to, to get Samsung Pay to work? This information will save many people from the agony of hunting down functional firmwares for Samsung Pay.
Click to expand...
Click to collapse
Sure, I have the SM-N975F model and I use the firmaware N975FXXU1ASHE from Spain, the CSC is PHE also read that the Italy CSC works.

Hey guys I gave a try to the software Samkey, they have an option to change your csc in a multicsc firmware. For example, I wanted the PCT csc code because is from Puerto Rico(my country) and I knew that Samsung Pay worked with it, so I flashed the firmware N975FXXU1ASH5 with multi-csc OWA N975FOWA1ASH5 because one of the csc is the one I wanted. The default csc in this firmware is CHL from chile(Samsung Pay dont support this country), next I buy 3 credits for Samkey on ebay for $6 and use the option to change the CSC and it worked. Do not needed to factory reset or delete any data. Also the phone do a OTA update and still have the PCT csc code. Hope this help someone.

AlEjAnDrO812 said:
Hey guys I gave a try to the software Samkey, they have an option to change your csc in a multicsc firmware. For example, I wanted the PCT csc code because is from Puerto Rico(my country) and I knew that Samsung Pay worked with it, so I flashed the firmware N975FXXU1ASH5 with multi-csc OWA N975FOWA1ASH5 because one of the csc is the one I wanted. The default csc in this firmware is CHL from chile(Samsung Pay dont support this country), next I buy 3 credits for Samkey on ebay for $6 and use the option to change the CSC and it worked. Do not needed to factory reset or delete any data. Also the phone do a OTA update and still have the PCT csc code. Hope this help someone.
Click to expand...
Click to collapse
Can you post a link to that

ekerbuddyeker said:
Can you post a link to that
Click to expand...
Click to collapse
The seller was https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.com/ulk/itm/254275758975
The software is in http://www.samkey.org/download.html
The seller gives you one account with minimum 3 credits, but you only have to use 2 credits
Sent from my SM-N975F using Tapatalk

AlEjAnDrO812 said:
Hey guys I gave a try to the software Samkey, they have an option to change your csc in a multicsc firmware. For example, I wanted the PCT csc code because is from Puerto Rico(my country) and I knew that Samsung Pay worked with it, so I flashed the firmware N975FXXU1ASH5 with multi-csc OWA N975FOWA1ASH5 because one of the csc is the one I wanted. The default csc in this firmware is CHL from chile(Samsung Pay dont support this country), next I buy 3 credits for Samkey on ebay for $6 and use the option to change the CSC and it worked. Do not needed to factory reset or delete any data. Also the phone do a OTA update and still have the PCT csc code. Hope this help someone.
Click to expand...
Click to collapse
Good info i am on PR how you change the csc flashing something or not?
Sent from my GM1917 using Tapatalk

x.Orville.x said:
Good info i am on PR how you change the csc flashing something or not?
Sent from my GM1917 using Tapatalk
Click to expand...
Click to collapse
I don't see the notification of the quote sorry for the late response, just need to flash a firmware with the CSC code you want then use the software I mentioned.
Sent from my SM-N975F using Tapatalk

AlEjAnDrO812 said:
Sure, I have the SM-N975F model and I use the firmaware N975FXXU1ASHE from Spain, the CSC is PHE also read that the Italy CSC works.
Click to expand...
Click to collapse
In case that your actual country of residence is different from the CSC you are using, have you tried adding your bank's debit card to Samsung Pay?
My CSC is Hong Kong and I can add Canadian credit cards but not debit cards. I was interested to know if this is the case across the board.

Is anyone else here still able to use MST payments while using a variant not meant for their home country?
For the past month or two, my SM-N9750 (Hong Kong) will not work with MST here in Canada. Prior to that, I would use MST every week, especially with my SM-G9650 (S9+, Hong Kong).
Any feedback would be greatly appreciated!

Samsung Pay works out of the box for both my dual sim Note 10+ and S10+. Both are from the UAE (XSG). Im using it with a USA card. However, there will be no USA points & promotions. , which are showing UAE promotions.

bimmerboii said:
Samsung Pay works out of the box for both my dual sim Note 10+ and S10+. Both are from the UAE (XSG). Im using it with a USA card. However, there will be no USA points & promotions. , which are showing UAE promotions.
Click to expand...
Click to collapse
Did you try doing any MST transactions (lately) on terminals that don't support tap-to-pay?

waqqas.khokhar said:
Did you try doing any MST transactions (lately) on terminals that don't support tap-to-pay?
Click to expand...
Click to collapse
90% of my transactions are MST. It works in all of them.

note 10+ 5G SM-N976N

Hi,
c

You have to use the same model to flash in Odin. 976B is not 976N.
You can flash the KOO firmware for 976N which is the unbranded version (I bought it myself at a Samsung shop in Seoul).

I tried to flash with 976B and got errors. I flashed with KOO 976N but srill i have brand of KT when i start the phone also some settings of KT.
No idea why KT still stays after flashing

minipac13 said:
I tried to flash with 976B and got errors. I flashed with KOO 976N but srill i have brand of KT when i start the phone also some settings of KT.
No idea why KT still stays after flashing
Click to expand...
Click to collapse
Right, because 976B is not the phone you have. You can't use a different model firmware.
Sounds like you need to change the CSC to KOO after boot up.

I used CSC for KOO byr still no lick
Let me know which CSC maybe i am doing something wrong

minipac13 said:
I used CSC for KOO byr still no lick
Let me know which CSC maybe i am doing something wrong
Click to expand...
Click to collapse
You said you flashed KOO firmware. That is not the same thing as switching CSC after booting up.
There is a phone menu to change the CSC. You need to do this, which will change the CSC setting on the EFS partition which is what you need to do.

Woow thank you for that. Now this is new and i didn't know it. Can you help me and let me know where to change CSC.
Thanks

*#272*IMEI# not working... i don't want to root also

minipac13 said:
*#272*IMEI# not working... i don't want to root also
Click to expand...
Click to collapse
you can try this:
https://forum.xda-developers.com/ga...de-how-to-change-s9-s9-csc-model-csc-t3870836

Kalm_Traveler said:
you can try this:
https://forum.xda-developers.com/ga...de-how-to-change-s9-s9-csc-model-csc-t3870836
Click to expand...
Click to collapse
no use and help from link since this was for combination firmware.
did you change ur CSC ? which method?

minipac13 said:
no use and help from link since this was for combination firmware.
did you change ur CSC ? which method?
Click to expand...
Click to collapse
The SM-N976N has 4 CSC options built-in. KOO is the unbranded Samsung code. There are 3 for the 3 major carriers in Korea: SK Telecom, kt Olleh, and LG U+
No I did not change my CSC because I bought my phone in a Samsung store in Seoul.

I have KT one , when i switch one says 5G and under screen KT.
also in setting. I am trying to find the way to change the CSC from KTC to KOO

Active KTC

Edit

Ohhh no way that bad
For me only Samsung pay ,5G, start up the phone, phone can't recognize my number rather than that everything else is perfect.
I am trying to find way to change CSC to KOO, hopefully will work

minipac13 said:
Ohhh no way that bad
For me only Samsung pay ,5G, start up the phone, phone can't recognize my number rather than that everything else is perfect.
I am trying to find way to change CSC to KOO, hopefully will work
Click to expand...
Click to collapse
Do you mean your N10+ doesn't connect to the 5G network even if it's present and working in your zone?

Yes i don't see 5G at all even covered in my country. Always LTE+

Weird.. where are you from?
Our model is 5G, I suppose SM-976B only is suitable for 5G networks over asian countries, hope someone could tell me I'm wrong...

vysus said:
Weird.. where are you from?
Our model is 5G, I suppose SM-976B only is suitable for 5G networks over asian countries, hope someone could tell me I'm wrong...
Click to expand...
Click to collapse
I don't know the specs of the B variant, but my N variant 5g worked in Korea just fine. Haven't been able to test it in the USA yet because T-Mobile doesn't have any 5g towers in my state yet.

In my country, UAE according to bands only N976N working since the are on same 5G band.
N976B isn't working with UAE network (5G). I bought and sold N976B.
Also now N976N is not working coz of carrier, KT from Korea.

How to check Supported LTE bands

I have the Canadian version of S20. How do I check the supporting LTE bands? Carrier info seems inaccurate.
What's the service code?

I don't know how to get all single band support but i know how to get Carrier Aggregation combinations listed from Samsung devices. I guess you have Qualcomm edition in Canada so here is instruction to get log file: https://mt-tech.fi/en/how-to-get-4g...ons-from-your-android-phone/#Qualcomm_devices . If you like, please share to me (https://cacombos.com/contribute) so i can add your model supported Carrier Aggregation combinations to my site.

sundoggy said:
I have the Canadian version of S20. How do I check the supporting LTE bands? Carrier info seems inaccurate.
What's the service code?
Click to expand...
Click to collapse
Easy, use Samsung Band Selector application

Hi Olkitu,
I had a S20 Ultra SM-G9880 from Hong Kong. I used the phone in Austria for about 1 Month. Everything worked fine in Austria, but I had the problem with CA with my provider.
My phone did not have all the combinations of CA from my provider.
Because of that I sold my phone. Can you edit the CA combinations of a Sm-g9880?
If yes I would by another time phone, because it is perfect for me.
Thanks and regards

astaroth said:
Hi Olkitu,
I had a S20 Ultra SM-G9880 from Hong Kong. I used the phone in Austria for about 1 Month. Everything worked fine in Austria, but I had the problem with CA with my provider.
My phone did not have all the combinations of CA from my provider.
Because of that I sold my phone. Can you edit the CA combinations of a Sm-g9880?
If yes I would by another time phone, because it is perfect for me.
Thanks and regards
Click to expand...
Click to collapse
I don't know how to edit carrier aggregation combinations of Samsung but we can get all supported supported combinations out. If you like just provide BandInfoXXX file from your device i can list then supported combinations of your phone? Here is instruction: https://mt-tech.fi/en/how-to-get-4g...ons-from-your-android-phone/#Qualcomm_devices
You can send then log file to https://cacombos.com/contribute . This help us to see what carrier aggregation combinations phones support.

astaroth said:
Hi Olkitu,
I had a S20 Ultra SM-G9880 from Hong Kong. I used the phone in Austria for about 1 Month. Everything worked fine in Austria, but I had the problem with CA with my provider.
My phone did not have all the combinations of CA from my provider.
Because of that I sold my phone. Can you edit the CA combinations of a Sm-g9880?
If yes I would by another time phone, because it is perfect for me.
Thanks and regards
Click to expand...
Click to collapse
I think if you changed your csc to tiwan "BRI " it should solve your problems, because Hong kong firmware "TGI" doesn't support CA but Tiwan firmware does so buy the device again but change the Firmware to BRI tiwan

hoss_n2 said:
I think if you changed your csc to tiwan "BRI " it should solve your problems, because Hong kong firmware "TGI" doesn't support CA but Tiwan firmware does so buy the device again but change the Firmware to BRI tiwan
Click to expand...
Click to collapse
Hi,
Thats true and not
I changed with the program samkey or so my csc.
After that i had the 5g option, caller ID and CA.
But the problem was the combination of CA. It did not paired Band 20 and Band 3. Only Band 20 and Band 7 or Band 7 and 3.
I described it in my other Postings.
I hope there is someone who can edit the CA combinations.

astaroth said:
Hi,
Thats true and not
I changed with the program samkey or so my csc.
After that i had the 5g option, caller ID and CA.
But the problem was the combination of CA. It did not paired Band 20 and Band 3. Only Band 20 and Band 7 or Band 7 and 3.
I described it in my other Postings.
I hope there is someone who can edit the CA combinations.
Click to expand...
Click to collapse
I you still have Caller ID then it is still hongkong firmware , tiwan version dont have caller ID so I think you should have clean flash of the tiwan firmware after changing the csc

hoss_n2 said:
I you still have Caller ID then it is still hongkong firmware , tiwan version dont have caller ID so I think you should have clean flash of the tiwan firmware after changing the csc
Click to expand...
Click to collapse
Hi hoss_n2,
Are you sure that it will work?
Then i will order another sm-g9880.
Can you read my posts in this thread?
There i write everything detailed:
https://forum.xda-developers.com/galaxy-s20/help/modify-csc-to-change-carrier-t4096035
Thanks for your help.
Regards

astaroth said:
Hi hoss_n2,
Are you sure that it will work?
Then i will order another sm-g9880.
Can you read my posts in this thread?
There i write everything detailed:
https://forum.xda-developers.com/galaxy-s20/help/modify-csc-to-change-carrier-t4096035
Thanks for your help.
Regards
Click to expand...
Click to collapse
I have read your linked thread before , but I want to ask one last question, how do you test Carrier aggregation from your phone and how you test the active bands for Carrier aggregation my device is a Tiwan version and it is doing CA between band 3 & Band 8

In the menu *#0011# there you can see how is the CA status and with which Band it is paired.
I tried my sim with an exynos version and could see that band 20 is paired with the other bands.
With the sm-g9880 band 20 was not paired with other bands while CA. Only band 7 and band 3 were paired.

astaroth said:
Hi hoss_n2,
Are you sure that it will work?
Then i will order another sm-g9880.
Can you read my posts in this thread?
There i write everything detailed:
https://forum.xda-developers.com/galaxy-s20/help/modify-csc-to-change-carrier-t4096035
Thanks for your help.
Regards
Click to expand...
Click to collapse
I'm currently on Tiwan firmware with BRI csc and my device is doing Carrier aggregation on Band 8 & band 3
attached picture

My device also paired band 3 and band 7.
The problem was the pairing with Band 20 because band 20 ist for the long distance.
There are also people in Australia who also have the problem.

@hoss_n2 what country and region were you successfully using CA at? I read that you changed from TGY to BRI.
I'm currently on T-Mobile USA and wondering if changing CSC to BRI will enable CA for me.

hoss_n2 said:
I think if you changed your csc to tiwan "BRI " it should solve your problems, because Hong kong firmware "TGI" doesn't support CA but Tiwan firmware does so buy the device again but change the Firmware to BRI tiwan
Click to expand...
Click to collapse
astaroth said:
Hi,
Thats true and not
I changed with the program samkey or so my csc.
After that i had the 5g option, caller ID and CA.
But the problem was the combination of CA. It did not paired Band 20 and Band 3. Only Band 20 and Band 7 or Band 7 and 3.
I described it in my other Postings.
I hope there is someone who can edit the CA combinations.
Click to expand...
Click to collapse
Did anyone confirm if changing csc tgy to bri changed the carrier aggregation combo files ? I don't think it does. Only way to check would be to examine the CA combos for bri and tgy to compare. No point in changing csc or flashing it they are the same.

Changing csc

Recently i bought a snapdragon s20+(g9860) hong kong model.
I want to change my csc to european csc to get faster updates.
Is this possible?
Verstuurd vanaf mijn SM-G9860 met Tapatalk

No.

Yes you can change csc check this thread out
https://forum.xda-developers.com/ga...faster-performance-atd3-t4089413/post82423727

00mpollard said:
Yes you can change csc check this thread out
https://forum.xda-developers.com/ga...faster-performance-atd3-t4089413/post82423727
Click to expand...
Click to collapse
You qoute is misleading.
The guy you qouted has a UK device and changed his CSC from branded Uk to unbranded UK, which both are on his device..
This guy here has a HK device and wants to to a European CSC. HK devices dont have European CSC on them, so he cant change to them.
Even if he roots the device, copies the CSC he wants from an EU decive to his and managed to change his CSC with wiping, not only he wont get quicker updates, he wont het updates at all because his CSC wont be an official CSC of a HK device

firefds said:
You qoute is misleading.
The guy you qouted has a UK device and changed his CSC from branded Uk to unbranded UK, which both are on his device..
This guy here has a HK device and wants to to a European CSC. HK devices dont have European CSC on them, so he cant change to them.
Even if he roots the device, copies the CSC he wants from an EU decive to his and managed to change his CSC with wiping, not only he wont get quicker updates, he wont het updates at all because his CSC wont be an official CSC of a HK device
Click to expand...
Click to collapse
My apologies I guess I misunderstood region csc changes. Thank you for the clarification. I am new to Samsung devices so it's a learning curve! Appreciate the detailed reply

Ok guys no problem....i guess this is the downside of buying a snapdragon....but the only one.
Love this phone!
Verstuurd vanaf mijn SM-G9860 met Tapatalk

hello
PRT -- XEO
If it's possible send to me too, thanks very much

I have Exynos variant with MEO (Portugal) csc. Is it possible to change to ITV (Italian) csc?

denzel09 said:
I have Exynos variant with MEO (Portugal) csc. Is it possible to change to ITV (Italian) csc?
Click to expand...
Click to collapse
Try this - Go to "Settings" then "About phone". Write down your IMEI Number. Open dialer and enter *#272*IMEInumber# (In the thread replace IMEInumber with your actual IMEI Number). Press dial, you should see a screen with the list of available CSC codes for your device. Select the CSC that you want and tap the Install option. This method works on the S10, it should work on the S20 as well.

varcor said:
Try this - Go to "Settings" then "About phone". Write down your IMEI Number. Open dialer and enter *#272*IMEInumber# (In the thread replace IMEInumber with your actual IMEI Number). Press dial, you should see a screen with the list of available CSC codes for your device. Select the CSC that you want and tap the Install option. This method works on the S10, it should work on the S20 as well.
Click to expand...
Click to collapse
Does not work on S20.

Orphee said:
Does not work on S20.
Click to expand...
Click to collapse
Worked on my S20 Ultra (Canada).

varcor said:
Try this - Go to "Settings" then "About phone". Write down your IMEI Number. Open dialer and enter *#272*IMEInumber# (In the thread replace IMEInumber with your actual IMEI Number). Press dial, you should see a screen with the list of available CSC codes for your device. Select the CSC that you want and tap the Install option. This method works on the S10, it should work on the S20 as well.
Click to expand...
Click to collapse
Oh wow! i already used samkey and purchased some credits, dafaq

rajeshr said:
Worked on my S20 Ultra (Canada).
Click to expand...
Click to collapse
You have the Exynos variant, correct? I know it won't work on Snapdragon devices.

varcor said:
You have the Exynos variant, correct? I know it won't work on Snapdragon devices.
Click to expand...
Click to collapse
No, I have the Snapdragon version (SM-G988W).

rajeshr said:
No, I have the Snapdragon version (SM-G988W).
Click to expand...
Click to collapse
Wow! That's a first, wasn't aware the Snapdragon variant had a Multi-CSC, like OXM on Exynos devices. Is the list of CSC's mainly Canada's Branded Carriers? Post a screen shot if possible, thanks!

varcor said:
Wow! That's a first, wasn't aware the Snapdragon variant had a Multi-CSC, like OXM on Exynos devices. Is the list of CSC's mainly Canada's Branded Carriers? Post a screen shot if possible, thanks!
Click to expand...
Click to collapse
Yes, it seems like the list is primarily Canadian carriers although there are a few that I don't recognize.

rajeshr said:
Yes, it seems like the list is primarily Canadian carriers although there are a few that I don't recognize.
Click to expand...
Click to collapse
Makes sense, Samsung can sell the same device to all carriers. If it's modeled like OXM on Exynos variants once you insert a compatible SIM the CSC is automatically updated after startup. That's really good news, users can switch carriers without flashing new firmware. Curious if Branded US Models have the same option, I would think they do. Thanks for the info, appreciate it!

varcor said:
Makes sense, Samsung can sell the same device to all carriers. If it's modeled like OXM on Exynos variants once you insert a compatible SIM the CSC is automatically updated after startup. That's really good news, users can switch carriers without flashing new firmware. Curious if Branded US Models have the same option, I would think they do. Thanks for the info, appreciate it!
Click to expand...
Click to collapse
This is really strange btw, because i maked that but after insert a compatible SIM the CSC never automatically updated after startup

denzel09 said:
This is really strange btw, because i maked that but after insert a compatible SIM the CSC never automatically updated after startup
Click to expand...
Click to collapse
Interesting, did the dialer code I posted get you to the Preconfig Screen? Was the desired CSC on the list?

varcor said:
Interesting, did the dialer code I posted get you to the Preconfig Screen? Was the desired CSC on the list?
Click to expand...
Click to collapse
When i try that dialer code, i have Connection problem or USSD code not valid so nothing Preconfig Screen

Is it possible to switch region / variant by flashing different firmware?

Hello,
Newbie question here coming from someone with Exynos model SM-G988B/DS (purchased while visiting Singapore):
Can I make this phone fully compatible with North American carriers? I'd like to use Wi-Fi Calling and VoLTE - but my Canadian carrier says that this phone is not eligible for these services because it's not a North American variant. A USSD code provided by my carrier was not successful (it said "invalid MMI code").
Even though I'm not entirely comfortable flashing different firmware onto Samsung phones - in this case I am desperate to do it (if it can be done to achieve my purpose at all...)
Now I'm kicking myself... wishing I knew that these calling features might not work back in Canada.
Thank you for your advice.

this is odd.. my phone is purchased in Malaysia, the country north of Singapore, and we have different CSC codes.
Wi-fi calling and VoLTE is working fine when i am in Singapore using a Singaporean SIM Card and when i back home in Malaysia using my Malaysian SIM Card. (But this is on the Samsung Note 8, have not gone to Singapore since i got my S20+ shortly before Malaysia shut down the borders due to the Covid-19 outbreak)

ctp9 said:
Hello,
Newbie question here coming from someone with Exynos model SM-G988B/DS (purchased while visiting Singapore):
Can I make this phone fully compatible with North American carriers? I'd like to use Wi-Fi Calling and VoLTE - but my Canadian carrier says that this phone is not eligible for these services because it's not a North American variant. A USSD code provided by my carrier was not successful (it said "invalid MMI code").
Even though I'm not entirely comfortable flashing different firmware onto Samsung phones - in this case I am desperate to do it (if it can be done to achieve my purpose at all...)
Now I'm kicking myself... wishing I knew that these calling features might not work back in Canada.
Thank you for your advice.
Click to expand...
Click to collapse
Short answer = you can't. You will need to change the "region key" (csc) by using samkey. If you flash the firmware belonging to different region with different csc code, you will not get any ota update at all. Therefore you must flash the firmware of, say, Canadian region, as well as changing the CSC to same set that Canada uses.
However: do *take note*, do *not* flash snapdragon firmware to exynos set vice versa.

vash_h said:
this is odd.. my phone is purchased in Malaysia, the country north of Singapore, and we have different CSC codes.
Wi-fi calling and VoLTE is working fine when i am in Singapore using a Singaporean SIM Card and when i back home in Malaysia using my Malaysian SIM Card. (But this is on the Samsung Note 8, have not gone to Singapore since i got my S20+ shortly before Malaysia shut down the borders due to the Covid-19 outbreak)
Click to expand...
Click to collapse
Yours works because those countries are still within the same region.
bluelavender said:
Short answer = you can't. You will need to change the "region key" (csc) by using samkey. If you flash the firmware belonging to different region with different csc code, you will not get any ota update at all. Therefore you must flash the firmware of, say, Canadian region, as well as changing the CSC to same set that Canada uses.
Click to expand...
Click to collapse
You're saying it cannot be done but then are telling me that it can be done using samkey. So which is it? Can I not flash North American firmware with the appropriate CSC?
However: do *take note*, do *not* flash snapdragon firmware to exynos set vice versa.
Click to expand...
Click to collapse
This is obvious - I would never do such a thing.

As its an exynos device it won't play well with usa networks and you cannot flash snapdragon firmware obviously. If you were in Europe this would have been easily done by changing the csc to say UK BTU via samkey and flashing the BTU firmware etc. Usa is a more complicated given the bands are different over there. Also you probably won't get carrier aggregation and volte / WiFi calling is a lottery! Plus usa networks aren't as chilled out as the rest of the world and have hissy fits if you don't use their branded devices. Charge way more than most other countries too! ?

ctp9 said:
Yours works because those countries are still within the same region.
You're saying it cannot be done but then are telling me that it can be done using samkey. So which is it? Can I not flash North American firmware with the appropriate CSC?
Click to expand...
Click to collapse
Not exactly. I'm in Singapore, using Taiwan set, with HK firmware & csc. It's 3 different regions
i'm saying it cannot be done by just flashing firmware like your original question
You *must* do both: update firmware *and* change csc. Now Samsung has locked the csc changing. You can no longer change csc by just flashing firmware of different region. It won't work. Change csc, then flash the firmware.

ctp9 said:
Yours works because those countries are still within the same region.
You're saying it cannot be done but then are telling me that it can be done using samkey. So which is it? Can I not flash North American firmware with the appropriate CSC?
This is obvious - I would never do such a thing.
Click to expand...
Click to collapse
It is different region as the csc is different.
In your case it is complicated. You can try to flash in your local csc file via odin. Just the csc file nothing else. See if it will work.
The firmware for exynos and snapdragon variants is very different.
---------- Post added at 04:45 AM ---------- Previous post was at 04:44 AM ----------
bluelavender said:
Not exactly. I'm in Singapore, using Taiwan set, with HK firmware & csc. It's 3 different regions
i'm saying it cannot be done by just flashing firmware like your original question
You *must* do both: update firmware *and* change csc. Now Samsung has locked the csc changing. You can no longer change csc by just flashing firmware of different region. It won't work. Change csc, then flash the firmware.
Click to expand...
Click to collapse
He cannot and must not flash sd firmware into exynos phone. It'll brick the phone. Taiwan and hk is sd variant.

Ok - thank you for your responses so far.
So what is the absolute best thing that could be done in order to be *the most* compatible with North American carriers? What CSC should I be aiming for and which firmware to be exact? Could someone please link me to the appropriate files? I'll do my research once I have an idea of what to start with. (If it won't work - I obviously won't bother with it... but I think I should do some more research before I completely give up...)

vash_h said:
He cannot and must not flash sd firmware into exynos phone. It'll brick the phone. Taiwan and hk is sd variant.
Click to expand...
Click to collapse
Yes, I advised him same thing in my earlier post above. sd & exynos rom is not interchangeable.
---------- Post added at 05:52 AM ---------- Previous post was at 05:48 AM ----------
ctp9 said:
Ok - thank you for your responses so far.
So what is the absolute best thing that could be done in order to be *the most* compatible with North American carriers? What CSC should I be aiming for and which firmware to be exact? Could someone please link me to the appropriate files? I'll do my research once I have an idea of what to start with. (If it won't work - I obviously won't bother with it... but I think I should do some more research before I completely give up...)
Click to expand...
Click to collapse
you're in tough luck. USA bands are different from most of the world (https://sea.pcmag.com/smartphones/3...-americas-first-unlocked-all-carrier-5g-phone). To top it off, your set is exynos, and even if you can get firmware that works for USA set, it is most likely will be in snapdragon.
Btw, exynos version will never support mmwave in USA carriers, simply because exynos version does not have mmwave antenna.
I would suggest you sell that exynos set / exchange it to snapdragon set. With snapdragon, you have more luck finding compatible firmware.

Well... I cannot particularly exchange this device now that I'm in Canada and I've had it for over a month. And no one here would want to buy it since it's not local to the continent. I'm stuck with it here now.
I'll just use it for a year and then get some other new phone next year that's local to my region. There's a few other things I do not like about this latest Galaxy anyway... and I cannot see myself using it for longer than a year. What a pity though - I used to be such a die hard Samsung fan until this latest flagship. They screwed up so many things, namely - the battery life and camera quality.

ctp9 said:
What a pity though - I used to be such a die hard Samsung fan until this latest flagship. They screwed up so many things, namely - the battery life and camera quality.
Click to expand...
Click to collapse
That's precisely why I do not want to use local version here, which is exynos, the one you brought there.. snapdragon version is *miles ahead* and really is the flagship quality. I don't have issue with camera, the battery is insanely efficient (I have 2 WhatsApp, 2 telegram, email real-time-push, wechat, line, fb, etc) and I only drain 4% per 8 hours at night with all notifications still coming in
Yes, that's the snapdragon version, the real s20 flagship.

Try switching off 120hz. I'm happy with my 60Hz. Battery is pretty good, i usually unplig my charger at 630am.. It'll last me to 10pm with about 30% charge left.
This includes occasional messaging on telegram and whatsapp, some email checking and Facebook browsing. Working hours I'll be on office wifi. Lunch hour and after work 530pm to 630pm is my pokemon go hour which is the only time my wife let's me play games.
My phone is s20+ 4G variant, usually on 4G+, dual sim and 1 micro sd card (one of the sim is the esim). My display is at wqhd+ at 60Hz.
So far im happy with the battery life.
Just this morning, taking advantage of my wifes absence, did some gaming, namely war machines, the tank fps game and pokemon go.. From 630am to 1130am, Facebook and tiktok when I'm preparing and eating my breakfast. my phone is left with 60% charge.

Hello,
I would buy Snapdragon / Hong Kong version because I hate Exynos problems, but I'm a bit confused about CSC.
I've read the topic, and I understood that I can't flash Exynos (European) firmware on the Snapdragon / Hong Kong version.
Some people bought Hong Kong version and works very well in my country frequencies, but I would use Samsung Pay.
What will happen if I change CSC/flash to any european CSC? It would work or not?
Thank you a lot.

psychok9 said:
Hello,
I would buy Snapdragon / Hong Kong version because I hate Exynos problems, but I'm a bit confused about CSC.
I've read the topic, and I understood that I can't flash Exynos (European) firmware on the Snapdragon / Hong Kong version.
Some people bought Hong Kong version and works very well in my country frequencies, but I would use Samsung Pay.
What will happen if I change CSC/flash to any european CSC? It would work or not?
Thank you a lot.
Click to expand...
Click to collapse
Samsung pay might work if the card supports samsung pay. But no way to know for sure until someone test it themselves.
Sent from my SM-G985F using Tapatalk

bluelavender said:
Not exactly. I'm in Singapore, using Taiwan set, with HK firmware & csc. It's 3 different regions
i'm saying it cannot be done by just flashing firmware like your original question
You *must* do both: update firmware *and* change csc. Now Samsung has locked the csc changing. You can no longer change csc by just flashing firmware of different region. It won't work. Change csc, then flash the firmware.
Click to expand...
Click to collapse
Hey man, can you make a link a guide on how to change the CSC and Flash the firmware?
I have an s20 Ultra Exynos from Indonesia, and want to change the to Korean CSC and flash the firmware.
---------- Post added at 09:20 PM ---------- Previous post was at 09:18 PM ----------
bluelavender said:
Yes, I advised him same thing in my earlier post above. sd & exynos rom is not interchangeable.
---------- Post added at 05:52 AM ---------- Previous post was at 05:48 AM ----------
you're in tough luck. USA bands are different from most of the world (https://sea.pcmag.com/smartphones/3...-americas-first-unlocked-all-carrier-5g-phone). To top it off, your set is exynos, and even if you can get firmware that works for USA set, it is most likely will be in snapdragon.
Btw, exynos version will never support mmwave in USA carriers, simply because exynos version does not have mmwave antenna.
I would suggest you sell that exynos set / exchange it to snapdragon set. With snapdragon, you have more luck finding compatible firmware.
Click to expand...
Click to collapse
Wait what? Exynos definitely has MMwave antennae! If it doesn't that's news to me. Where did you see information that states that?

eyeatoma said:
Hey man, can you make a link a guide on how to change the CSC and Flash the firmware?
I have an s20 Ultra Exynos from Indonesia, and want to change the to Korean CSC and flash the firmware.
---------- Post added at 09:20 PM ---------- Previous post was at 09:18 PM ----------
Wait what? Exynos definitely has MMwave antennae! If it doesn't that's news to me. Where did you see information that states that?
Click to expand...
Click to collapse
On Exynos & mmwave: https://www.bitfeed.co/2020/03/15/s...s-completely-disassembled-no-antennas-mmwave/ and https://eu.community.samsung.com/t5...-5G-supported-5G-networks/td-p/1577262/page/2
btw, you cannot flash Korean firmware to exynos. Korean S20 are all now using snapdragon

How do i unlock my Sim Network on Galaxy A71 5G T-Mobile carrier?
Please guys, how do i unlock my local sim network here in Nigeria?
I bought a second hand used Samsung Galaxy A71 5g from a vendor here. My local network won't work on the phone, telling me it's locked. The phone runs on a Snapdragon chip.
I'm really desperate about unlocking the network, how to i go about this?

bluelavender said:
Short answer = you can't. You will need to change the "region key" (csc) by using samkey. If you flash the firmware belonging to different region with different csc code, you will not get any ota update at all. Therefore you must flash the firmware of, say, Canadian region, as well as changing the CSC to same set that Canada uses.
However: do *take note*, do *not* flash snapdragon firmware to exynos set vice versa.
Click to expand...
Click to collapse
What are you on about ? Short answer = Yes you can! I've been on Germany CSC (Im UK based) I've been on Abu Dhabi region and i was getting my OTA updates with no issues i think you were confused with a root as that breaks your phone.

ctp9 said:
Well... I cannot particularly exchange this device now that I'm in Canada and I've had it for over a month. And no one here would want to buy it since it's not local to the continent. I'm stuck with it here now.
I'll just use it for a year and then get some other new phone next year that's local to my region. There's a few other things I do not like about this latest Galaxy anyway... and I cannot see myself using it for longer than a year. What a pity though - I used to be such a die hard Samsung fan until this latest flagship. They screwed up so many things, namely - the battery life and camera quality.
Click to expand...
Click to collapse
Did you able to change to csc or firmware of taiwan version