SM G998N US Rom Flash - Samsung Galaxy S21 Questions

Hello. I bought a South Korean S21 Ultra 5G. I'm trying to use the features of the US such as Samsung pay and also remove camera clicker which is automatically on all the time. Im trying to see if anyone has successfully flashed over a rom on chipset Exynos 2100. Thank you in advance.

SecretExile87 said:
Hello. I bought a South Korean S21 Ultra 5G. I'm trying to use the features of the US such as Samsung pay and also remove camera clicker which is automatically on all the time. Im trying to see if anyone has successfully flashed over a rom on chipset Exynos 2100. Thank you in advance.
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Hi
SecretExile87 said:
Hello. I bought a South Korean S21 Ultra 5G. I'm trying to use the features of the US such as Samsung pay and also remove camera clicker which is automatically on all the time. Im trying to see if anyone has successfully flashed over a rom on chipset Exynos 2100. Thank you in advance.
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Hi
US rom ( snapdragon) over an exynos device.. not possible, totally different animals.
Samsung pay is very picky if your csc is different than your samsung pay account country it will not work...

Related

Difference Between G925F and G925K

So, whats the difference between the International and Korean Version??
I heard that u cant do video calls on the Korean Version, is that true? Is there any Hardware changes like in Processor or Camera??
I ask cuz The Korean version here in Bangladesh is about 50$ Cheaper.. so will that b a good buy or will I regret it?
Nirzhar said:
So, whats the difference between the International and Korean Version??
I heard that u cant do video calls on the Korean Version, is that true? Is there any Hardware changes like in Processor or Camera??
I ask cuz The Korean version here in Bangladesh is about 50$ Cheaper.. so will that b a good buy or will I regret it?
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Kinda late reply.
I am a user of Galaxy S6 Edge in Korea, and I have the G925K model. This model is a carrier variant in Korea (for KT Olleh), and I am able to make video calls.
The video calls availability more depends on your carrier. I did not know that the G925K model was also release in other countries (and I am kinda suspicious) but I would suggest you to ask your carrier.
Millenium3 said:
Kinda late reply.
I am a user of Galaxy S6 Edge in Korea, and I have the G925K model. This model is a carrier variant in Korea (for KT Olleh), and I am able to make video calls.
The video calls availability more depends on your carrier. I did not know that the G925K model was also release in other countries (and I am kinda suspicious) but I would suggest you to ask your carrier.
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Does the USSD Code works with Korean S6 Variant? I bought S5 last time and it did not work... just want to know first before I buy S6 again in Korea., Thanks
I wonder if it's time to update documentation about the K variant. I just had to RMA my G925F to Deutsche Telekom, and they gave me a G925K back. No difference that I've noticed, but clearly they're sending K's everywhere nowadays!

Exynos firmware for use in Canada?

Hi all, I'm using a G965F/D in Canada. I recognize canadian s9 variants use snapgradon chipsets, bummer. I'd like to be able to use Samsung pay. Is that even possible? Perhaps theres a region that plays well with canada? Any help would be appreciated. Thanks

[Question] UE-SRVCC capability on S9+?

Hi,
I bought my S9+ (SM-G965F Duos / Exynos SoC) in UAE and brought it back to Argentina.
Thing is that my carrier supports VoLTE and VoWiFi, but they say my phone is not UE-SRVCC capable and that's why I cannot get the service.
Can someone with more knowledge clarify if the S9+ has this support? I think it should have... but don't have any knowledge to confirm and use it to go back qith my carrier and get that service.
Thanks,
Sent from S.G. S9+ Duos

Is it possible to install stock S21 ROM on S21 AT&T (USA) version?

I am thinking of getting an S21 from AT&T because of the deal they have right now, but I don't like AT&T bloatware. I'm a noob when it comes to phone firmware and such, so I'm not sure what is or isn't possible.
My understanding is as follows:
Carrier unlock is possible via AT&T website to use other carrier SIM cards.
Bootloader unlock is not possible on AT&T devices (starting at V2 seemingly?).
I'm just not clear if you need an unlocked bootloader to flash the stock S21 ROM on an AT&T device. If not needed, what is the point of unlocking the bootloader, just for root?
Any clarity is appreciated.
You can use "patched ODIN" to do flash "U1" firmware, which removes bloatware.
Not sure about the bootloader, I think you're correct on that.
I flashed an Xfinity Mobile S21 (carrier unlocked by them) to U1 but so far the phone is refusing to use the proper carrier settings for VoWIFI (I have a VZW sim in it now). It worked for 1-2 weeks previously. Everything else seems to work properly including VoLTE.
I'll probably switch back to Xfnity Mobile to get VoWIFI working again.
Thanks for the response.
can I ask something related? I got my Samsung S21 from Amazon unlocked and I'm in International market. the phone has esim capability but it's locked up. my question is (can) I flash international firmware or let's say the one being sold in the middle east? I'm stuck with single sim which is pretty annoying. what do you guys recommend
mohawahba said:
can I ask something related? I got my Samsung S21 from Amazon unlocked and I'm in International market. the phone has esim capability but it's locked up. my question is (can) I flash international firmware or let's say the one being sold in the middle east? I'm stuck with single sim which is pretty annoying. what do
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My understanding is that the international firmware is not compatible with the US phones because the US version uses the Qualcomm Snapdragon processor, whereas the international phones use the Exynos chip. I think you're stick with single SIM, unfortunately.
quadrun1 said:
My understanding is that the international firmware is not compatible with the US phones because the US version uses the Qualcomm Snapdragon processor, whereas the international phones use the Exynos chip. I think you're stick with single SIM, unfortunately.
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the snapdragon version is only sold in the US solely?
"International and Korea models of the S21 utilize the Exynos system-on-chip, while the U.S., Canadian, Chinese, Taiwanese, Hong Kong and Japanese models utilize the Qualcomm Snapdragon 888."
Samsung Galaxy S21 - Wikipedia
en.wikipedia.org
quadrun1 said:
"International and Korea models of the S21 utilize the Exynos system-on-chip, while the U.S., Canadian, Chinese, Taiwanese, Hong Kong and Japanese models utilize the Qualcomm Snapdragon 888."
Samsung Galaxy S21 - Wikipedia
en.wikipedia.org
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so flashing the HK to the US G991U1 model applicable? I need to activate eSIM to get dual sim working. also volte doesn't work for me at all.
Hello , can I ask a related question, I've an unlocked s21 5g with the Three carriers SM-G991B .. Can I install the global version ??

How to activate 5g on samsung s21 sm-g991u1 US variant in philippines

Is there other way to use or activate 5g on my samsung s21 us variant here in philippines?
adam the.... said:
Is there other way to use or activate 5g on my samsung s21 us variant here in philippines?
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You have 5G in the Philippines? Assuming you do, then there are 2 protocols used with 5G, pretty sure the US version phone isn't compatible with international, but could be wrong on that.
but if you're carrier doesn't have it, it will never work
AsItLies said:
You have 5G in the Philippines? Assuming you do, then there are 2 protocols used with 5G, pretty sure the US version phone isn't compatible with international, but could be wrong on that.
but if you're carrier doesn't have it, it will never work
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Yes there is, n78 band is available here
adam the.... said:
Yes there is, n78 band is available here
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Follow this link for the S21 specs on gsmarena.
The important part to look at is the Neworking 5G bands. You'll see that the US phone u have uses mmwave technology for 5G. And that the international version, the SM-G991B uses Sub6. They are not interchangeable.
Sorry, after looking at this closer, the US version does actually do both MMWave and Sub6, but still won't help you as it doesn't have band 78. And, unfortunately, you can't flash a rom for one of the other devices to yours, as they have different chipsets; exynos vs Qualcomm.

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