Database Develop

Single Sim vs Dual SIm

whats the difference between the single sim and dual sim models?
do they receive the updates on the same day?
are there any potential custom rom issues with going for the dual sim?

I went with the dual sim as I really need that convenience.
When it comes to development, I'm sure it will be the same update schedule. Plus I see no reason why having a dual sim would hinder custom ROM support.

What's the reason that Samsung brings out 2 versions? Is it just a different SIM holder or are there more differences? I normally use 1 SIM. But might get another private one. And thus I also wonder if it will be needing different software when I decide to root it.

I have contacted Samsung. Their answer was that there is no hardware or ROM difference.
If this is correct. I expect double SIM bays to be sold soon by other suppliers.
Ordered the double SIM now. And will do the double SIM mod. As it only allows 2 SIM or 1 SIM + SD.

Since the second SIM slot can be used for microSD card, I don't understand why would anybody want the single SIM model... especially that it looks like the dual-SIM one is cheaper?! Here's an example of both models on the same site:
https://www.techmania.ch/Product/Detail/23991212?parnr=12833993 ==> single SIM = 1075 CHF
https://www.techmania.ch/Product/Detail/23309783?parnr=12833993 ==> dual SIM = 999 CHF

the problem that the brand version is single sim

DS have DUOS on the back I hate that part, but overall better for reselling and usage if you end up needing second SIM slot. I might move from 2 phones to 1 phone soon

The ROM is not entirely identical. In comparing the two I found that the dual SIM model has several libraries that are not present on the single SIM models, in addition to the obvious settings differences to let the phone know how many SIM cards to look for.

Dual SIM model here. But nothing mentioned on the rear.

I can think of at least two reasons they'd release a single SIM version:
1. Most network operators don't like users to have a second SIM from a different operator - it's easier for the user to switch operators
2. Companies have many reasons not to give their employees dual SIM phones. Also, they migh not agree with SD cards in their phones.

Just curious.
I wonder what Samsung does with the "extra" storage space that the second SIM would have occupied for a single SIM phone?
It can't be all about the SD card slot

Question: I've read that the dual sim is the "international" version, while the single sim is the official UK version, and that some manufacturers refuse to honour warranty claims for international versions of their phones that are often grey far east imports. Does this affect Samsung dual sim phones?

any differences between dual sim and single sim?

are there any real differences between the dual sim and single sim? besides the obvious 2 sims vs 1 sim difference lol.
what about differences between the models (clt-al00, clt-l29, clt-l09, etc)? if it helps, I am in the USA and T-mobile. I am just trying to find the best one that covers most bands if not all and prefer dual sim. any advice and help is appreciated thank you in advance

Yes there is a difference.
The difference is one accepts one sim card and the other accepts two sim cards

dieselhazza said:
Yes there is a difference.
The difference is one accepts one sim card and the other accepts two sim cards
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Click to collapse
Thank u for ur reply.. But I have already stated the obvious 2 sims and 1 SIM differences. Anything else besides that?

It might be possible that the only difference is the card slot. It might still work with 2 sim cards with the right sim card adapter for two sims. Afaik it worked for older models.

dieselhazza said:
Yes there is a difference.
The difference is one accepts one sim card and the other accepts two sim cards
Click to expand...
Click to collapse
paysen said:
It might be possible that the only difference is the card slot. It might still work with 2 sim cards with the right sim card adapter for two sims. Afaik it worked for older models.
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Thank u.. Do u know if there's any difference from international and global? I'm trying to buy the p20 pro and I dont wanna end up buying one that doesnt work for my service provider in USA.

I have some relevant questions/thoughts on this. I noticed that some phones are listed as having band 41 and some are not (on eBay, varying model numbers of this phone). Now that T-Mobile might be roaming on Sprint and visa versa, band 41 does actually make a difference since the OP is using the phone on T-Mobile. Does anyone know if this is just a mistake on the listings? The official Huawei site lists band 40, but not band 41.
-Collin-

CollinFX45 said:
I have some relevant questions/thoughts on this. I noticed that some phones are listed as having band 41 and some are not (on eBay, varying model numbers of this phone). Now that T-Mobile might be roaming on Sprint and visa versa, band 41 does actually make a difference since the OP is using the phone on T-Mobile. Does anyone know if this is just a mistake on the listings? The official Huawei site lists band 40, but not band 41.
-Collin-
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Band 41 is listed as well at least for some models. https://www.devicespecifications.com/en/model/6fe84965 another good site to see the difference between the different models is http://www.phonemore.com/huawei-p20-pro/models/1817 this one includes the different models, not all though as CLT-L04 is not included, and their specs including the bands for each of the different models. Some of them even support CDMA so in theory should be compatible with Verizon or Sprint.

I have CLT-L04
and i cant find any info about it!!!

Mine has Cat 16/ Cat 18, and it came with US charger, dual Sims and Google now. Model Number CLT-L29. Bought it from sobeonline1 on eBay. https://www.dropbox.com/s/wn539su2m077hpu/Screenshot_20180516-125141.jpg?dl=0

chrisrk45 said:
I have CLT-L04
and i cant find any info about it!!!
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CLT-L04 is intended for the Canadian market. L29 is not so it may not have the LTE capabilities in North America while L04 would.
I thought it wasn't for sale until today (the 17th).

Wiggums said:
CLT-L04 is intended for the Canadian market. L29 is not so it may not have the LTE capabilities in North America while L04 would.
I thought it wasn't for sale until today (the 17th).
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Thanks fot the info!!!!

Just wondering will dual Sim adapter work with single Sim phone? No software that indicates any Sim settings

Single sim doesn't get updates.

I'd like to jump in here. I just got the CLT-L04 today. I just started working for a Canadian company this week and I will be stationed in the US in Atlanta. I want dual SIM capability so that I can keep my personal phone number but not have to carry 2 devices. he SIM card tray only came with the ability to support a singel SIM card. Can I just order a dual SIM card carrier? is there anything special I need to know or do on the phone to support dual SIM's?

David Horn said:
Single sim doesn't get updates.
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Click to collapse
My single SIM CLT-L04 already got an update once. C792. Not carrier branded.

timkenyon said:
I'd like to jump in here. I just got the CLT-L04 today. I just started working for a Canadian company this week and I will be stationed in the US in Atlanta. I want dual SIM capability so that I can keep my personal phone number but not have to carry 2 devices. he SIM card tray only came with the ability to support a singel SIM card. Can I just order a dual SIM card carrier? is there anything special I need to know or do on the phone to support dual SIM's?
Click to expand...
Click to collapse
You need to convert your phone to dual SIM variant using paid software (which may require a bootloader unlock code that Huawei no longer provides) and then use a dual SIM tray.
I did the above and my single SIM phone is now a fully functioning dual SIM phone. There's really no difference between the two variants other than software and that tray. The tray alone will not work.

Dual SIM Version?

I currently on T-Mobile and have a dual SIM Samsung S8+. I am thinking for going to change my service to Google Fi as I travel overseas. Google Fi has a great price for Data Roaming which is charged the same as at home. The issue is that I need a dual SIM phone. I do not like to swap my SIM cards as I almost lost one while changing. Currently Google Fi list LG V35 as a Google Fi phone. I am wondering if anyone here is using LG V40 on Google Fi. I noticed on Gsmarena that LG V40 has a dual SIM version. I am thinking of getting one and use it on Google Fi.
BTW. I do know that my S8+ can work on Google Fi but it would not have the Google VPN and network switching functions on Google Fi.

Waiting for the same.... dual sim version of V40 was mentioned few times here and there but nothing official yet!

I believe every variant is a dual-sim variant. The T-Mobile variant I purchased is working just fine with T-Mobile in the primary slot and Sprint in the secondary.
Granted, I had to buy it outright and call in for an unlock after 40 days.

IMEI Question
The issue is that I am on T-Mobile and would like to switch to Google Fi. I sure would like to get an unlock version if all versions are Dual SIM. Having a combo SIM slot does not mean it is dual SIM. Does your T-Mobile version has 2 IMEIs? Are you using your T-Mobile version with T-Mobile and Sprint services or using Google Fi service?

Paradoxumical said:
I believe every variant is a dual-sim variant. The T-Mobile variant I purchased is working just fine with T-Mobile in the primary slot and Sprint in the secondary.
Granted, I had to buy it outright and call in for an unlock after 40 days.
Click to expand...
Click to collapse
So your T-mobile LG V40 support dual sims!?
That would be quite interesting!

Paradoxumical said:
I believe every variant is a dual-sim variant. The T-Mobile variant I purchased is working just fine with T-Mobile in the primary slot and Sprint in the secondary.
Granted, I had to buy it outright and call in for an unlock after 40 days.
Click to expand...
Click to collapse
I'd really love to see a screenshot. All signs point to the US version being single-sim.

duraaraa said:
I'd really love to see a screenshot. All signs point to the US version being single-sim.
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Yeah my Sprint Variant is Single Sim, and that I'm aware of Sprint won't activate a T-Mobile phone let alone a GSM phone until they are officially one company...

Ainz_Ooal_Gown said:
Yeah my Sprint Variant is Single Sim, and that I'm aware of Sprint won't activate a T-Mobile phone let alone a GSM phone until they are officially one company...
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Iphone XS in the States has only one SIM but due to a built-in eSIM, it could have 2 lines on that phone. Just wishful thinking that we could do the same on LG. I wonder if LG V40 would support eSIM?

i was reading somewere...there is active dual sim with dedicated memory card slot (triple slot 2 for sim & 1 for mmc)...is it true...???

root
Hi,
Do you think that the V40 dualsim version could be rooted?
From my knowledge the G family with dual sim option could not be rooted, V30 could be rooted
Any confirmation?
Thnaks for your help

jay_ind said:
i was reading somewere...there is active dual sim with dedicated memory card slot (triple slot 2 for sim & 1 for mmc)...is it true...???
Click to expand...
Click to collapse
The one that's just released in Europe has got exactly that, dual SIM + hybrid SD card slot. I'm confirming that because I had the V40 in my hand yesterday and the tray inside it is one of those dual SIM SD card hybrid ones.

It's so hard to find dual-sim info on this LG V40. Does the V405QA7 (US Unlocked) and/or V405TAB (T-Mobile) have dual-sim dual standby?
---------- Post added at 04:10 PM ---------- Previous post was at 03:13 PM ----------
Paradoxumical said:
I believe every variant is a dual-sim variant. The T-Mobile variant I purchased is working just fine with T-Mobile in the primary slot and Sprint in the secondary.
Granted, I had to buy it outright and call in for an unlock after 40 days.
Click to expand...
Click to collapse
Can you tell us the exact tmobile model that you have? I am looking to get a dual-sim too. Thank you.

韩国版，香港版都是双卡版本

wangmengjing said:
韩国版，香港版都是双卡版本
Click to expand...
Click to collapse
Thanks for the info. 謝謝.

Question Is there a Dual SIM Snapdragon S21 Ultra model?

Is there a Dual SIM Snapdragon S21 Ultra model? If yes, what’s the model number?

The specs at GSMArena say:
Single SIM (Nano-SIM and/or eSIM) or Dual SIM (Nano-SIM and/or eSIM, dual stand-by)
So it looks like at least one of the models is dual sim (and it's mentioned in the description on the Samsung website) - but there's no indication which model it might be.

Samsung support said my unlocked 512gb will be dual sim - but it took a lot of time on the phone researching and calling other people for them to find that info. Not even sure if it’s true at this point. It’s very strange how this is so difficult to figure out

HK unit should have dual sim according to my supplier.

Action123 said:
Samsung support said my unlocked 512gb will be dual sim - but it took a lot of time on the phone researching and calling other people for them to find that info. Not even sure if it’s true at this point. It’s very strange how this is so difficult to figure out
Click to expand...
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Are you purchasing it in the US from Samsung.com? Did you buy it already? Is the Dual SIM feature active or did these scummy carriers manage to bully Samsung into not selling a single Dual SIM phone into the market?

China/HK version is SD888 + dual sim

prodigiez said:
China/HK version is SD888 + dual sim
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Click to collapse
If I buy it in the US, will it change my updates from Samsung?

Dont waste your money getting TGY version in US.

prodigiez said:
Dont waste your money getting TGY version in US.
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Click to collapse
Why? What's bad about it?
It doesn't have software updates at the same rate?
I wonder if local COVID tracking support is present?

Yes. Hongkong version always release with dual sim snapdragon
Galaxy S21 Ultra 5G SM-G9980: https://samfw.com/firmware/SM-G9980

Yes, it supports dual sim

The Hong Kong variant has Dual Physical SIM's but no E-Sim. Regardless of which country you use it in you'll get timely updates as they are provided by Samsung, not your local service provider.

prodigiez said:
Dont waste your money getting TGY version in US.
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Click to collapse
Why not? No carrier bloatware, dual sim's, unlocked bootloader, fast updates and the only call features you won't have are CA and 5G which at this time is more of a promotional gimmick than a useful feature.

varcor said:
Why not? No carrier bloatware, dual sim's, unlocked bootloader, fast updates and the only call features you won't have are CA and 5G which at this time is more of a promotional gimmick than a useful feature.
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Click to collapse
What about the US unlocked version? I don't care about unlocked bootloader, I know how to remove/disable all bloatware. And, the speed of updates don't matter as much as they used to. This isn't 2012.

In India we have the dual sim exynos variant (Sim1 - PHY, Sim2 - PHY or esim) if you put in a physical Sim in the 2nd Sim position then esim gets disabled. If you use esim then the 2nd Sim is disabled.

nixnixnixnix4 said:
What about the US unlocked version? I don't care about unlocked bootloader, I know how to remove/disable all bloatware. And, the speed of updates don't matter as much as they used to. This isn't 2012.
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Nope. I mean, I wasn't aware that it doesn't support dual physical SIM. But right on their website on the S21U page, it says that no US versions support eSIM. So I'm gonna go ahead and say that the answer is, unfortunately, no =/
But the good thing is that (probably with any unlocked version of the phone) you can just carry around both of your SIM cards and the sim pin tool in a really small, durable canister... You'd just have to turn off the phone and then swap the SIM cards whenever you wanted to change your service. It'd be slightly more annoying, but still doable!

nixnixnixnix4 said:
Are you purchasing it in the US from Samsung.com? Did you buy it already? Is the Dual SIM feature active or did these scummy carriers manage to bully Samsung into not selling a single Dual SIM phone into the market?
Click to expand...
Click to collapse
from what I can gather, after a LOT of trying . . . there is no dual sim US version samsung phone. This from a lot of searching and phone conversations with several tech and sales personnel on the phone with Samsung. For this reason, I bought a non US version which broke the Samsung Health Monitor app and does not work for 5G within the USA. other than that it seems to be behaving nicely on the Tmobile US based network.

NippleSauce said:
Nope. I mean, I wasn't aware that it doesn't support dual physical SIM. But right on their website on the S21U page, it says that no US versions support eSIM. So I'm gonna go ahead and say that the answer is, unfortunately, no =/
But the good thing is that (probably with any unlocked version of the phone) you can just carry around both of your SIM cards and the sim pin tool in a really small, durable canister... You'd just have to turn off the phone and then swap the SIM cards whenever you wanted to change your service. It'd be slightly more annoying, but still doable!
Click to expand...
Click to collapse
Ive tried that solution and its a lot more problematic than it might seem. I need the extra sim because I travel overseas and my US carrier starts complaining when my roaming data goes large (even tho they advertise "unlimited"). that means i would need to remember to turn off mobile data everytime i change the card. also the tool gets lost and bent and you can actually bend or break those sim trays after a lot of changing . . . not to mention losing sim cards on a bumpy train or taxi. I hate to invoke Murphy, but you can be assured that when a super important call is trying to come in it will not be on the line associated with the sim card currently installed. Sim swapping can also cause minor problems with messaging apps like whatsapp and telegram that could be a whole new thread. The only real viable solution for a frequent traveler is a dual sim phone with sim 2 used for mobile data in the locale physically present in. Second to that is carrying two phones. Least desireable (at least for me) is frequent sim swapping. That's my experience and humble opinion after years of very heavy international travel.

SM-G9980 has dual SIM fully working. I know for a fact because that's the version I have. }
I'm from Chile and the phone does everything I want it to do.

I have the 9980. It is fully dual sim but does not do 5G in the US. Occasionally I don't get data in some places in the US even when I have 5 bars. I'm guessing there are other bands this device misses. But that's rare. Everything is a compromise in life!
One good piece of news is that the T-MOBILE NOTE20 ULTRA now has it's esim activated. So if you are predominantly in the US this is the combo you need as it's dual sim and 5G in the US. The hope is that they do this with more devices including the s21.

OP7 pro dual SIM conspiracy...

So I have a 1+7 pro dual SIM that had a bad incident with a concrete stair...
Bought one new old stock from China that was a single SIM.... Used my old SIM holder and voila, now it's dual SIM.
Phone was single SIM, now my network is in SIM 2... Just an FYI if this was not already known.

If someone wants an actual video I can do that. Still using SIM 2... I'll add a screenshot.