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Will i able to use s10 snapdragon variants in uk/India ??

Will i able to get updates ?
Will i able to use volte(LTE) with UK/INDIA carrier or will i face any network issue?
or any other issue if i use snapdragon variant in non- snapdragon region.
Thank you in advance.

I'm using a Hong Kong model G9730 Snapdragon in UK, EE network. Everything works fine, updates and LTE+. The only thing that doesn't work is Samsung Pay but Google Pay works perfect. Can't say anything about other UK carriers or India.

ixman said:
I'm using a Hong Kong model G9730 Snapdragon in UK, EE network. Everything works fine, updates and LTE+. The only thing that doesn't work is Samsung Pay but Google Pay works perfect. Can't say anything about other UK carriers or India.
Click to expand...
Click to collapse
Does VOLTE works? or it switches back to 3G/H for calls

devtstm said:
Will i able to get updates ?
Will i able to use volte(LTE) with UK/INDIA carrier or will i face any network issue?
or any other issue if i use snapdragon variant in non- snapdragon region.
Thank you in advance.
Click to expand...
Click to collapse
Updates - not sure yet, we can push manually via adb.
VOLTE - In India, Airtel, Yes. I am currently using.

Samkey CSC choice #debranding

Hello,
I have bought branded s10 - Vodafone UK. I will change CSC code to remove Vodafone branding from device and I am going to use Samkey. I live in Great Britain so default csc code for my region is XEU. I am familiar with Samsung and years ago I made a research and case looks a little bit complicated. New phones sold directly from Samsung come with BTU csc code, but phones from resellers come with XEU csc. Additionally I experienced on s9 that in Odin flashing BTU resulted XEU. Very strange. There are a lot of threads with question about difference between XEU and BTU with always the same answer - it depends from where phone come. That's quite simple however still very strange.
Anybody has never explain what's the difference in software and services between XEU and BTU. What's the real difference between both of them?
Should I flash XEU or BTU? And why XEU or BTU?
If I know any other country doesn't have more than one csc for non branded Samsung's. Why Samsung released two different csc for UK?
It's really strange. Currently changing csc in samkey require credit so there is no sense check all csc just to see how them works. If you have knowledge what's going on please explain that.

Grimm-reaper said:
Hello,
I have bought branded s10 - Vodafone UK. I will change CSC code to remove Vodafone branding from device and I am going to use Samkey. I live in Great Britain so default csc code for my region is XEU. I am familiar with Samsung and years ago I made a research and case looks a little bit complicated. New phones sold directly from Samsung come with BTU csc code, but phones from resellers come with XEU csc. Additionally I experienced on s9 that in Odin flashing BTU resulted XEU. Very strange. There are a lot of threads with question about difference between XEU and BTU with always the same answer - it depends from where phone come. That's quite simple however still very strange.
Anybody has never explain what's the difference in software and services between XEU and BTU. What's the real difference between both of them?
Should I flash XEU or BTU? And why XEU or BTU?
If I know any other country doesn't have more than one csc for non branded Samsung's. Why Samsung released two different csc for UK?
It's really strange. Currently changing csc in samkey require credit so there is no sense check all csc just to see how them works. If you have knowledge what's going on please explain that.
Click to expand...
Click to collapse
if you flash a CSC in Odin and it changes from what you thought you were flashing to something else, then its a multi csc file and the SIM in your phone is telling the phone to go to that CSC.

That's right in almost all case. My region UK is the only one exception with two csc XEU and BTU. XEU comes from resellers, Samsung sales phones with BTU csc code localy. Nobody knows why we have got two different csc for our country and what's the difference between both.

Grimm-reaper said:
Hello,
I have bought branded s10 - Vodafone UK. I will change CSC code to remove Vodafone branding from device and I am going to use Samkey. I live in Great Britain so default csc code for my region is XEU. I am familiar with Samsung and years ago I made a research and case looks a little bit complicated. New phones sold directly from Samsung come with BTU csc code, but phones from resellers come with XEU csc. Additionally I experienced on s9 that in Odin flashing BTU resulted XEU. Very strange. There are a lot of threads with question about difference between XEU and BTU with always the same answer - it depends from where phone come. That's quite simple however still very strange.
Anybody has never explain what's the difference in software and services between XEU and BTU. What's the real difference between both of them?
Should I flash XEU or BTU? And why XEU or BTU?
If I know any other country doesn't have more than one csc for non branded Samsung's. Why Samsung released two different csc for UK?
It's really strange. Currently changing csc in samkey require credit so there is no sense check all csc just to see how them works. If you have knowledge what's going on please explain that.
Click to expand...
Click to collapse
usa also has multiple csc for unlocked devices.. the usa U1 (samsung direct models) have most to all the same csc that the carrier U models have.. for example theres xaa xas xac gcf then all the carriers also such as vzw spr att tmo you get the point.. usually the samsung direct has less bloat but also sometimes certain carrier features might not work such as wifibcalling for example.. usually ull be ok tho..
i suggest looking into chimera tool.. most devices r supported to change csc for free after ubpurchase a license which might b more beneficial in the long run instead of always purchasing samkey credits and you can try em all n see what works best for u.. id check if that features availabls for ur device first tho

Grimm-reaper said:
That's right in almost all case. My region UK is the only one exception with two csc XEU and BTU. XEU comes from resellers, Samsung sales phones with BTU csc code localy. Nobody knows why we have got two different csc for our country and what's the difference between both.
Click to expand...
Click to collapse
i think most if not all since S8 contain multi-csc lol

Grimm-reaper said:
That's right in almost all case. My region UK is the only one exception with two csc XEU and BTU. XEU comes from resellers, Samsung sales phones with BTU csc code localy. Nobody knows why we have got two different csc for our country and what's the difference between both.
Click to expand...
Click to collapse
you probably have a lot more than 2 lol.. usually each carrier has a csc.. chk ur partitions for example.. they might b in product or odm or somewhere in system.. or get phone info apk should also list them

elliwigy said:
you probably have a lot more than 2 lol.. usually each carrier has a csc.. chk ur partitions for example.. they might b in product or odm or somewhere in system.. or get phone info apk should also list them
Click to expand...
Click to collapse
My mistake. Two different csc for unbranded devices. BTU - directly from Samsung. XEU - unbranded phones from resellers like Amazon. I don't understand why they are different. I have flashed BTU and my phone switched to XEU. Yes BTU is multi OXM.

Grimm-reaper said:
My mistake. Two different csc for unbranded devices. BTU - directly from Samsung. XEU - unbranded phones from resellers like Amazon. I don't understand why they are different. I have flashed BTU and my phone switched to XEU. Yes BTU is multi OXM.
Click to expand...
Click to collapse
not sure what you mean by multi oxm since i thought oxm was a region code and not csc code necessarily..

@elliwigy,
1. Do you have a link to this Chimera tool?
2. I have a friend with a Galaxy Note 10+ and the CSC on this phone is set to TGY (Hong Kong).
If I understand correctly, call recording is blocked due to this CSC.
Can he use Chimera to change the CSC, and enable call recording?

ericgl said:
@elliwigy,
1. Do you have a link to this Chimera tool?
2. I have a friend with a Galaxy Note 10+ and the CSC on this phone is set to TGY (Hong Kong).
If I understand correctly, call recording is blocked due to this CSC.
Can he use Chimera to change the CSC, and enable call recording?
Click to expand...
Click to collapse
It's a tool that isn't free https://chimeratool.com/en

SAMKEY Code Reader SERVER 1, 2, or 3 CREDIT Packs
elliwigy said:
usa also has multiple csc for unlocked devices.. the usa U1 (samsung direct models) have most to all the same csc that the carrier U models have.. for example theres xaa xas xac gcf then all the carriers also such as vzw spr att tmo you get the point.. usually the samsung direct has less bloat but also sometimes certain carrier features might not work such as wifibcalling for example.. usually ull be ok tho..
i suggest looking into chimera tool.. most devices r supported to change csc for free after ubpurchase a license which might b more beneficial in the long run instead of always purchasing samkey credits and you can try em all n see what works best for u.. id check if that features availabls for ur device first tho
Click to expand...
Click to collapse
Unless you have a large number of phones you need to change csc for its way less expensive to use Samkey. I found a seller onebay selling 1 and 2 credits which makes it even cheaper. eBay seller name is stai30 you can find his items at link below
1 Credoit
http://www.ebay.com/itm/283850219804
2 credits
http://www.ebay.com/itm/283854077843
3 credits
http://www.ebay.com/itm/283849640785
---------- Post added at 07:20 AM ---------- Previous post was at 07:16 AM ----------
ericgl said:
@elliwigy,
1. Do you have a link to this Chimera tool?
2. I have a friend with a Galaxy Note 10+ and the CSC on this phone is set to TGY (Hong Kong).
If I understand correctly, call recording is blocked due to this CSC.
Can he use Chimera to change the CSC, and enable call recording?
Click to expand...
Click to collapse
Chimera is expensive and you have to re subscribe. Also samkey team is way more current with updates and you can even buy 1 credit or 2 credits cheap from ebay seller stai30.

mishaelwillo said:
Unless you have a large number of phones you need to change csc for its way less expensive to use Samkey. I found a seller onebay selling 1 and 2 credits which makes it even cheaper. eBay seller name is stai30 you can find his items at link below
1 Credoit
http://www.ebay.com/itm/283850219804
2 credits
http://www.ebay.com/itm/283854077843
3 credits
http://www.ebay.com/itm/283849640785
---------- Post added at 07:20 AM ---------- Previous post was at 07:16 AM ----------
Chimera is expensive and you have to re subscribe. Also samkey team is way more current with updates and you can even buy 1 credit or 2 credits cheap from ebay seller stai30.
Click to expand...
Click to collapse
https://forum.xda-developers.com/showpost.php?p=83299523&postcount=551

mishaelwillo said:
Unless you have a large number of phones you need to change csc for its way less expensive to use Samkey. I found a seller onebay selling 1 and 2 credits which makes it even cheaper. eBay seller name is stai30 you can find his items at link below
1 Credoit
http://www.ebay.com/itm/283850219804
2 credits
http://www.ebay.com/itm/283854077843
3 credits
http://www.ebay.com/itm/283849640785
---------- Post added at 07:20 AM ---------- Previous post was at 07:16 AM ----------
Chimera is expensive and you have to re subscribe. Also samkey team is way more current with updates and you can even buy 1 credit or 2 credits cheap from ebay seller stai30.
Click to expand...
Click to collapse
you cant beat free.. and yes, there is free ways to change csc

Cheaper with Samkey
ericgl said:
@elliwigy,
1. Do you have a link to this Chimera tool?
2. I have a friend with a Galaxy Note 10+ and the CSC on this phone is set to TGY (Hong Kong).
If I understand correctly, call recording is blocked due to this CSC.
Can he use Chimera to change the CSC, and enable call recording?
Click to expand...
Click to collapse
I was able to change CSC cheaper (as low as $2.99) with samkey, i found an ebay supplier selling 1 credit and 2 credit packs. Follow links to the items below.
1 Samkey credit http://www.ebay.com/itm/283850219804
2 Samkey credits http://www.ebay.com/itm/283854077843
3 Samkey credits http://www.ebay.com/itm/283849640785

Question S21 Ultra HK SM-G9980 Version Outside of HK?

Does anyone own an Hong Kong version outside of Hong Kong?
If so, what are your experiences in terms of:
1. What country are you using it?
2. Does VoLTE Work?
3. Does Wifi Calling Work?
4. Both sim slot capable of 5G?
5. Samsung Pay work?
6. Call Recording?

Using G9980 HK version in Australia. No issues. VOLTE and wifi calling works. 5G works very well on SIM slot 2 only, not on SIM 1. No call recording. Have not tried Samsung Pay I use Google Pay.

Im in japan right now, and 4g works in both sims,volte works, in options could put 2 sims on 5g, but here dont have 5g yet.

in case someone else interested:
- Austria
- everything except for Samsung Pay and Call Recording works on my side
- 5G not tested, but shown as option

Mihalaki said:
Using G9980 HK version in Australia. No issues. VOLTE and wifi calling works. 5G works very well on SIM slot 2 only, not on SIM 1. No call recording. Have not tried Samsung Pay I use Google Pay.
Click to expand...
Click to collapse
Hey brother, what carrier are you with? I am trying with Telstra and it simply doesn't work.
Cheers

fabricio.rod.510 said:
Hey brother, what carrier are you with? I am trying with Telstra and it simply doesn't work.
Cheers
Click to expand...
Click to collapse
I'm with Optus. I had to activate 5G though the Optus app not sure if you might have to do that with Telstra or call Telstra support to make sure 5G activated

Question CSC question- Currently SIN and need to use with Tmobile or Verizon in USA

Hi all. I have the a few sm-g998b phones, rooted with magisk, and I am a bit confused about which CSC I should flash to the device (SAMKEY). I ordered the phones from Singapore and need them be more compatible with USA verizon and USA tmobile. Only using one sim per phone. Which CSC should I replace the current SIN csc with for each, and is there anything else I can do to make these phones play a bit nicer in the USA? I am currently having issues with no 5g, poor wifi calling, no updates, etc.

1. Avoid SamKEY. Do your own work.
2. Flash the HOME_CSC, or the CSC of the firmware of the carrier. HOME is usually a safer bet though.
You're going to have issues in the US until you flash the proper CSC. AFAIK, every S21U has all radios, but the CSC activates the correct one.
For the absolute safest, download the TMOB stock firm, and flash the HOME_CSC (as well as the BL, AP, etc), then put the Tmob SIM in after boot.

SapphireEX said:
1. Avoid SamKEY. Do your own work.
2. Flash the HOME_CSC, or the CSC of the firmware of the carrier. HOME is usually a safer bet though.
You're going to have issues in the US until you flash the proper CSC. AFAIK, every S21U has all radios, but the CSC activates the correct one.
For the absolute safest, download the TMOB stock firm, and flash the HOME_CSC (as well as the BL, AP, etc), then put the Tmob SIM in after boot.
Click to expand...
Click to collapse
Tmobile or any US firmware can't be flashed on any Exynos Global device.

falawefulwaffle said:
Hi all. I have the a few sm-g998b phones, rooted with magisk, and I am a bit confused about which CSC I should flash to the device (SAMKEY). I ordered the phones from Singapore and need them be more compatible with USA verizon and USA tmobile. Only using one sim per phone. Which CSC should I replace the current SIN csc with for each, and is there anything else I can do to make these phones play a bit nicer in the USA? I am currently having issues with no 5g, poor wifi calling, no updates, etc.
Click to expand...
Click to collapse
Why would you aquire the Exynos Global variant knowing your service provider isn't optimized for your firmware? Did you save money? If so I hope saved a lot otherwise it was a poor choice. Your best option is keeping the stock SIN Firmware, at least you'll get timely updates. You MIGHT get Wifi Calling and VoLTE enabled but forget about 5G and Carrier Aggregation.

Missed that you mentioned an Exynos variant. Yeah, you're ****ed. Exynos is not compatible with US bands, or at least aggregate banding.

varcor said:
Why would you aquire the Exynos Global variant knowing your service provider isn't optimized for your firmware? Did you save money? If so I hope saved a lot otherwise it was a poor choice. Your best option is keeping the stock SIN Firmware, at least you'll get timely updates. You MIGHT get Wifi Calling and VoLTE enabled but forget about 5G and Carrier Aggregation.
Click to expand...
Click to collapse
Unfortunately, these phones are company. we needed root for some applications.

*don't use SAMKEY
This is a bit tricky because US is Snapdragon-based.
My best bet would be to factory reset (don't forget to backup) and flash a multi-csc Exynos ROM (OXM). This would detect the most compatible one for your US sims.
I would suggest getting the XSP for Singapore because that's the unbranded one.
Other than n71 5G band for US Cellular, I don't think you'll have much issues.

mpore14 said:
*don't use SAMKEY
This is a bit tricky because US is Snapdragon-based.
My best bet would be to factory reset (don't forget to backup) and flash a multi-csc Exynos ROM (OXM). This would detect the most compatible one for your US sims.
I would suggest getting the XSP for Singapore because that's the unbranded one.
Other than n71 5G band for US Cellular, I don't think you'll have much issues.
Click to expand...
Click to collapse
"This would detect the most compatible one for your US sims" Nope, that's incorrect, Exynos Global variants aren't able to detect the most compatible US Networks. It's apples and oranges, there is zero integration for US devices.

varcor said:
"This would detect the most compatible one for your US sims" Nope, that's incorrect, Exynos Global variants aren't able to detect the most compatible US Networks. It's apples and oranges, there is zero integration for US devices.
Click to expand...
Click to collapse
Thanks for correcting me. Least that's how it was for me using NZ sim on a G9980 SD variant.

mpore14 said:
Thanks for correcting me. Least that's how it was for me using NZ sim on a G9980 SD variant.
Click to expand...
Click to collapse
The Exynos variants are Multi-CSC Devices, mainly for Europe, not for the US. The SM-G9980 isn't a Multi-CSC Device unlike some US Models, it's Dual-Sim. In Settings under Network Operators you can have the device select the "Best Network" but it isn't analyzing call features, it's only matching the network with the Active CSC (SIM Card).

Bro,
On the stock phone dialer key in
*#2263#
You will see the bands the 998b supports.
Now u need to check on the networks u plan to use in the US what bands are used. Not sure what u plan to do but these exynos phones should be able to roam into the US with voice n data services. Not blazing gigabits but one should be able to roam globally with these phones.

Question Can changing firmware enable bands?

Hi all,
I have a US bought S21 Ultra that i bought and used in the USA. I have now moved to the UK. The g998u1 Is not able to use UK 5G bands. My question is whether flashing the phone g998b or g998w will enable the bands that i need or, is there a physical difference on the phone that will negate this?
Thanks in advance.
PK

Devices sold in different regions often have hardware differences. Samsung in particular is known for doing this. I would think that it would be generally cheaper to use one radio chipset across all markets and just use software to define its capabilities, but this often isn't the case.

https://forum.xda-developers.com/t/...22-series-including-sub-6-and-mmwave.4488435/ works. Just skip the steps you don't need (i.e., if your csc is xaa, there's no need to change csc).
It works on my u1 xaa and other than band 28 for 5G, all the bands are there.

annascott said:
https://forum.xda-developers.com/t/...22-series-including-sub-6-and-mmwave.4488435/ works. Just skip the steps you don't need (i.e., if your csc is xaa, there's no need to change csc).
It works on my u1 xaa and other than band 28 for 5G, all the bands are there.
Click to expand...
Click to collapse
What s21 ultra firmware version did you use this with? Thanks

dyeager said:
What s21 ultra firmware version did you use this with? Thanks
Click to expand...
Click to collapse
G998U1UES5CVI8, as U1 XAA hasn't received ui5 yet

annascott said:
G998U1UES5CVI8, as U1 XAA hasn't received ui5 yet
Click to expand...
Click to collapse
The next software version could always break this. Do you ever use it with AT&T or Verizon or their MVNOs sims or esims? Does the *#73# still work for band selection for them? Thanks

dyeager said:
The next software version could always break this. Do you ever use it with AT&T or Verizon or their MVNOs sims or esims? Does the *#73# still work for band selection for them? Thanks
Click to expand...
Click to collapse
I'm not in the US and never inserted a US sim, *#73# works on my phone