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Dual sim, dual 3G standby concurrently?

The Chinese variant supports Full Netcom 3.0 which during standby mode allows the 1st sim to be in 4G/3G and the 2nd sim to be in 3G-voice at the same time.
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This means in countries like Japan and South Korea which do not have 2G network, both sims will be able to receive incoming calls via 3G during standby mode as neither sims are forced to 2G. As far as I know, this is different from all previous dual sim phones which only allow one sim to be in 4G/3G while forcing the other sim to be in 2G, thus rendering the second sim useless when there is no 2G network available.
From the youtube video reviews of the Indian variant, I have only seen one sim in 4G/3G while the other sim will be in 2G.
Does anyone know if the Indian variant supports dual standby with 4G/3G on the 1st sim and 3G-voice on the 2nd sim, at the same time, like the Chinese variant? Or will the 2nd sim be forced to 2G once the 1st sim is in 4G/3G, and vice versa?

Finally something that I've been looking for since I moved to Japan 2 years ago.
Now if only it doesn't look hideous...

as a force to establish that 1 to 3g sim was, and 2 sim only 2g?

mtkc said:
... As far as I know, this is different from all previous dual sim phones which only allow one sim to be in 4G/3G while forcing the other sim to be in 2G, thus rendering the second sim useless when there is no 2G network available. ...
Click to expand...
Click to collapse
I cannot help you with the question(s) on the Indian Mi 5 variant, but I may confirm that all current generation of phones are 4G+2G only.
http://forum.xda-developers.com/android/help/dual-sim-simultaneous-4g-3g-capable-t3370632

I don't think that MI5 works both SIMs 3G or LTE. Whenever I switch SIM1 as 3G or LTE Preferred instantly SIM2 will go to 2G only.
This is confirmed!

kamrul.auntu said:
I don't think that MI5 works both SIMs 3G or LTE. Whenever I switch SIM1 as 3G or LTE Preferred instantly SIM2 will go to 2G only.
This is confirmed!
Click to expand...
Click to collapse
As far as I am aware, that is true for the Indian variant. The Chinese variant, however, is confirmed to be able to connect to both LTE + 3G simultaneously; I have 2 Chinese Mi 5 Pros and they both work as stated.

I have tested on mi Mi5 and i confirm that. First SIM is 2G/3G/4G with data and second SIM 2G/3G simultaneously.
I am in France and it is tested on Orange / Bouygues. It is the fist phone i have tested with this function...

mtkc said:
The Chinese variant supports Full Netcom 3.0 which during standby mode allows the 1st sim to be in 4G/3G and the 2nd sim to be in 3G-voice at the same time.
This means in countries like Japan and South Korea which do not have 2G network, both sims will be able to receive incoming calls via 3G during standby mode as neither sims are forced to 2G. As far as I know, this is different from all previous dual sim phones which only allow one sim to be in 4G/3G while forcing the other sim to be in 2G, thus rendering the second sim useless when there is no 2G network available.
From the youtube video reviews of the Indian variant, I have only seen one sim in 4G/3G while the other sim will be in 2G.
Does anyone know if the Indian variant supports dual standby with 4G/3G on the 1st sim and 3G-voice on the 2nd sim, at the same time, like the Chinese variant? Or will the 2nd sim be forced to 2G once the 1st sim is in 4G/3G, and vice versa?
Click to expand...
Click to collapse
THERE IS NO SUCH THING AS MI5 china variant and MI5 India variant. You would like to think you are special, but you aren't. MI5 is produced in 3 variants (normal, prime, pro) and it's sold in china or in global markets .. like India.
so.. you might have to redo the question, so it can be properly answered. Nobody knows what is India variant of MI5... it might be a clone made in India as far as I know.

gxg said:
THERE IS NO SUCH THING AS MI5 china variant and MI5 India variant. You would like to think you are special, but you aren't. MI5 is produced in 3 variants (normal, prime, pro) and it's sold in china or in global markets .. like India.
so.. you might have to redo the question, so it can be properly answered. Nobody knows what is India variant of MI5... it might be a clone made in India as far as I know.
Click to expand...
Click to collapse
Calm down - don't recall saying I was special?
I read that in either the official Xiaomi forums or xda when I was wondering the same thing and some users said they couldn't get dual 3g purchased from the official Indian Mi5 store.
Was only trying to help but ofc you keyboard warriors just can't help yourselves

my mi 5 (indian version) during standby mode allows the 1st sim to be in 4G/3G and the 2nd sim to be in 3G..
however, this ability is kind of an issue for me, because i want my 2nd sim to be in 2G (to save battery & better reception of cellular network)
is there any way to force the 2nd sim to 2G?

meetpal said:
my mi 5 (indian version) during standby mode allows the 1st sim to be in 4G/3G and the 2nd sim to be in 3G..
however, this ability is kind of an issue for me, because i want my 2nd sim to be in 2G (to save battery & better reception of cellular network)
is there any way to force the 2nd sim to 2G?
Click to expand...
Click to collapse
In dialer *#*#4636*#*# or tap % times on memory capasity in settings. In additional settings you can chose Simcard 2 and inside chose Only GSM
After restart it has to be set up again.

So.. did anyone get to conclusion here?

Lost dual sim functionality

Anyone else have any issues with one sim not working? I was on vampirefo's Zenui rom for a few days and both sims worked fine at the same time and then whichever one I don't have set as the data sim fails to work. It shows no signal for the sim thats not set as the data sim. Both had full signal yesterday. I flashed the LineageOS rom to see if it was rom related but still does the same thing. Am I missing something here?

AT&T shut down 2G

It's not just data that's affected. I get 4g anyhow. It shuts off the voice and SMS also on whichever sim isn't set as the default data sim

I retract my previous statement. Thanks lycsky for the insight. I've got Pure Talk USA on one sim and FreedomPop on the other. Whenever I set the preferred network type to 3g/4g on both whichever one isn't the data sim resets preferred type to 2g and it's greyed out. Is there any way to force it to not do that? In the preferred networks there's a list of about 20, can I delete the 2g ones and force 3g/4g?

Weasel0 said:
I retract my previous statement. Thanks lycsky for the insight. I've got Pure Talk USA on one sim and FreedomPop on the other. Whenever I set the preferred network type to 3g/4g on both whichever one isn't the data sim resets preferred type to 2g and it's greyed out. Is there any way to force it to not do that? In the preferred networks there's a list of about 20, can I delete the 2g ones and force 3g/4g?
Click to expand...
Click to collapse
AFAIK, this is the case for this phone. The hardware cannot handle both SIM on 3G/4G, so the usage is much more limited now with AT&T shut down 2G

I think your probably right. So I guess I'm sol on any kind of dual sim setup then as both puretalk and FreedomPop use at&t. I think they both use the mobile too but their coverage sucks here. Unless someone has a solution.

I have similar issue.
I insert H20 PAYG SIM card into Slot 1 for voice and txt only. And Freedompop SIM card for data into Slot 2 for data only.
For couple months, there was no problem to use. Last month, I noticed that SIM slot 1 keep shown as "no signal." I swap the SIM card each slots; H20 into slot 2 and Freedompop into slot 1, but same issue. H20 Sim card seems dead. I made call, the phone didn't ring. Also the phone didn't make call.
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I turn off SIM slot 2(Freedompop) and set all voice, txt, and data to H20. And Now, H20 brings 4G LTE+Voice+TXT everything.
But actually that's not what I want.
I upgraded to v6.6 and then to v7.2 again, still same problem.

seungbaekm said:
I have similar issue.
I insert H20 PAYG SIM card into Slot 1 for voice and txt only. And Freedompop SIM card for data into Slot 2 for data only.
For couple months, there was no problem to use. Last month, I noticed that SIM slot 1 keep shown as "no signal." I swap the SIM card each slots; H20 into slot 2 and Freedompop into slot 1, but same issue. H20 Sim card seems dead. I made call, the phone didn't ring. Also the phone didn't make call.
I turn off SIM slot 2(Freedompop) and set all voice, txt, and data to H20. And Now, H20 brings 4G LTE+Voice+TXT everything.
But actually that's not what I want.
I upgraded to v6.6 and then to v7.2 again, still same problem.
Click to expand...
Click to collapse
From what I understand the phone can't do 3 or 4g on both SIM cards at once. It can only do 2g on one and 3 or 4g on the other but at&t has done away with 2g and at&t is what H2O and FreedomPop both use. I think what I'm going to do is is just go with FreedomPop by itself.

Weasel0 said:
From what I understand the phone can't do 3 or 4g on both SIM cards at once. It can only do 2g on one and 3 or 4g on the other but at&t has done away with 2g and at&t is what H2O and FreedomPop both use. I think what I'm going to do is is just go with FreedomPop by itself.
Click to expand...
Click to collapse
Your are right.
I insert Lycamobile PAYG SIM card. Tested call and data, and both works OK.
I thought I used H20+Freedompop before, but guess it was Lycamobile+Freedompop.
My main phone number is on Google Voice, so too many SIM cards I swaped and used.
Unlike H20+Freedompop, Lycamobile+Freedompop shows R(roaming?) instead 4G, but speed seems almost same.

seungbaekm said:
Your are right.
I insert Lycamobile PAYG SIM card. Tested call and data, and both works OK.
I thought I used H20+Freedompop before, but guess it was Lycamobile+Freedompop.
My main phone number is on Google Voice, so too many SIM cards I swaped and used.
Unlike H20+Freedompop, Lycamobile+Freedompop shows R(roaming?) instead 4G, but speed seems almost same.
Click to expand...
Click to collapse
So are you able to use Lycamobile+FreedomPop at the same time then?

Same problem happened to me just after the first of the year.. I have always used my TracFone in SIM slot 1 (I think that is on AT&T network?!).
Then Freedompop on SIM slot 2.
Data is set for Freedompop. But when I do that SIM1 drops out and I can't send/receive calls/SMS on TracFone in SIM Slot 1.
From the discussion this sounds like it happened when AT&T dropped 2G and the BLU R1 HD doesn't support both cards in this situation?
Wow, okay, well that is too bad, but can someone confirm that it is the issue and there isn't going to be a solution for it? THANKS SO MUCH!!

bradhmn said:
Same problem happened to me just after the first of the year.. I have always used my TracFone in SIM slot 1 (I think that is on AT&T network?!).
Then Freedompop on SIM slot 2.
Data is set for Freedompop. But when I do that SIM1 drops out and I can't send/receive calls/SMS on TracFone in SIM Slot 1.
From the discussion this sounds like it happened when AT&T dropped 2G and the BLU R1 HD doesn't support both cards in this situation?
Wow, okay, well that is too bad, but can someone confirm that it is the issue and there isn't going to be a solution for it? THANKS SO MUCH!!
Click to expand...
Click to collapse
The way I understand it is the R1 can't do both Sims if their both 3g and up, only 2g on one and 3g and up on the other. The only option I can figure is a T-Mobile carrier for calls/texts on 2g and an at&t carrier for data on the other. Where I live T-Mobile service is pretty much nil though. Be nice if it was just a matter of software but I'd imagine it's hardware related.

At the chance of sounding stupid, could someone explain to me why a data connection is needed anyway for just calls/SMS? It's not always been that way has it?

bradhmn said:
Same problem happened to me just after the first of the year.. I have always used my TracFone in SIM slot 1 (I think that is on AT&T network?!).
Then Freedompop on SIM slot 2.
Data is set for Freedompop. But when I do that SIM1 drops out and I can't send/receive calls/SMS on TracFone in SIM Slot 1.
From the discussion this sounds like it happened when AT&T dropped 2G and the BLU R1 HD doesn't support both cards in this situation?
Wow, okay, well that is too bad, but can someone confirm that it is the issue and there isn't going to be a solution for it? THANKS SO MUCH!!
Click to expand...
Click to collapse
If you use AT&T this phone pretty much became single SIM. T-Mobile still have 2G, so you can have dual SIM function if you use T-Mobile signal for call/sms.
---------- Post added at 03:58 AM ---------- Previous post was at 03:53 AM ----------
Weasel0 said:
At the chance of sounding stupid, could someone explain to me why a data connection is needed anyway for just calls/SMS? It's not always been that way has it?
Click to expand...
Click to collapse
AT&T now use 3G for voice. They also have VoLTE. The voice still works if you turn off "cellular data". It's like a mandate network upgrade.

Yes, it's definitely the AT&T 2G migration. I was also on Freedompop (SIM1) and H2O (SIM2). Thus, I just switched to T-Mobile, which promises to keep supporting 2G until 2020. I'm not happy about it: T-mobile's pay-as-you-go is not as good a deal as H2O, and the call quality is not quite as good as being on the AT&T Network. And Freedompop's call quality over VOIP is just not good enough for me to use it as a primary voice line. But I've gotten addicted to Freedompop's free data (which I use to check Google Voice texts through Hangouts, so never pay for texts), so if I want to make calls through SIM2, T-mobile seems like the only option.

I switched to TPO wireless which uses T-Mobile I think. Still can't get both Sims to play nice with each other

Dual SIM question

I’d like to figure out how the dual SIM function is handled before purchasing the Galaxy Note. Thanks for your understanding
1) I understand that regarding phone calls, you can receive them on the 2 numbers concurrently. When doing a voice call though, can you manually select which SIM number to use without switching the SIM cards physically (primary vs subsidiary) ?
2) same question regarding data usage, will it auto-select the best SIM signal to catch mobile internet ? Or do you have to intervene manually to select the SIM you want to use ? or worse, intervening physcially by switching the cards inside the device ?
3) again, same question when using the device tethering as a mobile hotspot this time. Will it auto-switch between the 2 dual SIMs for data, to catch and broadcast the strongest internet signal ? Or requires to manually select the targeted SIM ? or invert the SIMs physically ?
Thanks a lot for your time

ViroMajor said:
I’d like to figure out how the dual SIM function is handled before purchasing the Galaxy Note. Thanks for your understanding
1) I understand that regarding phone calls, you can receive them on the 2 numbers concurrently. When doing a voice call though, can you manually select which SIM number to use without switching the SIM cards physically (primary vs subsidiary) ?
2) same question regarding data usage, will it auto-select the best SIM signal to catch mobile internet ? Or do you have to intervene manually to select the SIM you want to use ? or worse, intervening physcially by switching the cards inside the device ?
3) again, same question when using the device tethering as a mobile hotspot this time. Will it auto-switch between the 2 dual SIMs for data, to catch and broadcast the strongest internet signal ? Or requires to manually select the targeted SIM ? or invert the SIMs physically ?
Thanks a lot for your time
Click to expand...
Click to collapse
Hi.
I have the dual sim version and I'll try to answer your questions :
1. You'll have 2 dial buttons, one for each sim. If you want to call from sim 1,then you'll press the first button (they are one next to each other)
2. You can only select with sim you want to use for data,no automatic selection based on the signal strength. For example, if you receive a call on sim 1 and your data is on sim 2,you will not be able to access internet. Only if voice and data are set on the same sim.
But I got used to it and other than that, the note 9 is a beast.
Hope I could help

Thanks for the precisions !
Can you receive SMS on both SIMs simultaneously without switching ?
I found online some triple SIM add-ons at SIMore. But it also requires some manipulations to hop around the various SIMs

ViroMajor said:
Thanks for the precisions !
Can you receive SMS on both SIMs simultaneously without switching ?
I found online some triple SIM add-ons at SIMore. But it also requires some manipulations to hop around the various SIMs
Click to expand...
Click to collapse
Yes you can

You have the option to choose the sim for outgoing calls and sms from the notification shade. You can receive calls and sms from both sim regardless your settings.
As for mobile internet, you will be connected via the sim that you have selected. See the screen shots attached.
Oh yes, your notification bar will show 2 signal bars when you have 2 sims
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This is how you can send messages

Great ! Thx guys, much clearer guys

Wifi calling and Volte

Hi. So I was having trouble with calls, signal drops, very annoying whooshing noises and so on. When I contacted the carrier they said let's turn VOLTE THEN WIFI CALLING. my wife and I have the p20 pro CLT-LO4 and neither of our phones have an option for volte or wifi calling. Contacted carrier(Koodo) I'm in canada. They said well it's suppose to be there reset you phone and check again. No dice then press *#*#4935#*#* and it does nothing. They say it's enabled on there end and don't have a solution... I called Huawei and they took my serial number and model and told me that it's the carrier 100%....

try this.
Open phone settings > Wireless & networks > Mobile network > both VoLTE calls and Wi-Fi calling settings should be there.
if you can't find, it is because the carrier disabled it in the rom. Try to unlock bootloader, root and flash an international rom to get it back.

When I talked to the carrier they assured that it was unlocked.
If you have a link on how to preform the tasks you said ide definately give it a try
Thank you

One question tho is it possible to brick the phone? Reason I'm asking is my wife's phone is 8 months old but I just switched from my s9 to this one 2 days ago so i can tech bring it back and get a refund but the problem is there isn't any other phones offered besides the p30 pro that compare and I would have to pay $690 down plus 20 a month for 24 months where as p20pro was $0 down and 15 a month.

If the carrier supports it, then you should have the option in settings. In my case, when I bought the phone only one of the two carriers that I have in each sim card was supporting WiFi calling. Now that both support it, I have it in the settings. The problem that I have found with WiFi calling though is that if you start a phone call through WiFi and you move to a place with bad reception, then the call is dropping. Also, if you are on a WiFi call and you go to a place where the wifi has no reception whatsoever, then again the call drops, instead of switching to normal call. In other words, whatever the way you make the call, you have to finish it. There is no switching during the call; this became really frustrating, so I now switched it to mobile network preferred
Sent from my CLT-L29 using Tapatalk

Alot of misinformation about this on the net.
Regardless of what your carrier says this is in fact a carrier issue.
If you simply swap sim cards to another carrier that DOES support these features on all phones with no restrictions then it will show up in the settings.

sinnedone said:
Alot of misinformation about this on the net.
Regardless of what your carrier says this is in fact a carrier issue.
If you simply swap sim cards to another carrier that DOES support these features on all phones with no restrictions then it will show up in the settings.
Click to expand...
Click to collapse
Exactly, line one doesn't have that option but SIM 2 does .
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Limeybastard said:
Exactly, line one doesn't have that option but SIM 2 does .View attachment 4878505
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Click to expand...
Click to collapse
This screenshot is from a Mate 20 X but the same thing shows up when I insert this sim into a P20 Pro.
(Oh....in the United States when you pop in a T-Mobile SIM you will have Volte toggle in settings but not on ATT)

sinnedone said:
This screenshot is from a Mate 20 X but the same thing shows up when I insert this sim into a P20 Pro.
(Oh....in the United States when you pop in a T-Mobile SIM you will have Volte toggle in settings but not on ATT)
Click to expand...
Click to collapse
T-Mobile SIM 1 , no volte toggle here thanks for the clarification. My post was primarily to reinstate your point about WiFi being carrier/SIM dependent.
Sent from my EVR-L29 using Tapatalk

quinnford said:
When I talked to the carrier they assured that it was unlocked.
If you have a link on how to preform the tasks you said ide definately give it a try
Thank you
Click to expand...
Click to collapse
I'll upload a video tutorial when i get back home tonight.

spiderx_mm said:
try this.
Open phone settings > Wireless & networks > Mobile network > both VoLTE calls and Wi-Fi calling settings should be there.
if you can't find, it is because the carrier disabled it in the rom. Try to unlock bootloader, root and flash an international rom to get it back.
Click to expand...
Click to collapse
hi i tried searching in google for the volte enable in my mobile device Huawei P20 Pro , my other sim says it is volte ready however the other sim volte radio button cant be seen i tried switching sims but everytime i switch sim the volte button will transfer leaving me a sim card tray with no volte does this mean that it is the carrier needs to enable volte? others say that i need to wait for update on my mobile device

My device has a model CLT-L29 Global version for Huawei P20 Pro EMUI version is 10.0.0 Android 10 and it says for this version there is no update for EMUI 11 so does this mean i can not use volte anymore or do i need to contact carrier for the volte to be enabled?

thanito said:
If the carrier supports it, then you should have the option in settings. In my case, when I bought the phone only one of the two carriers that I have in each sim card was supporting WiFi calling. Now that both support it, I have it in the settings. The problem that I have found with WiFi calling though is that if you start a phone call through WiFi and you move to a place with bad reception, then the call is dropping. Also, if you are on a WiFi call and you go to a place where the wifi has no reception whatsoever, then again the call drops, instead of switching to normal call. In other words, whatever the way you make the call, you have to finish it. There is no switching during the call; this became really frustrating, so I now switched it to mobile network preferred
Sent from my CLT-L29 using Tapatalk
Click to expand...
Click to collapse
I am also using CLT-L29 GLOBAL however only one sim has the wifi calling radio button enabled and hd calling but on sim 2 there is no volte calls radio button both sims are set to 4G i have tried switching sims but everytime i switch sims the sim that has volte calls radio button and wifi calling will move if i switch the sim cards the other sim tray no volte radio button will appear

mobile network not available

My P9 have problem with network (mobile network not available).
I don't get any message and calls, also can't call and write messenge. But mobile internet working fine 4G.
I found that, then i switch sim card slot in 2G option (dual card management) phone works. But problem is mobile internet now just 2G.
p.s. not using 2 sim card.
Build number: EVA-L19C432B166
Android 6.0
No Updates
Any idea???
I'm new there so ....

rokazas001 said:
My P9 have problem with network (mobile network not available).
I don't get any message and calls, also can't call and write messenge. But mobile internet working fine 4G.
I found that, then i switch sim card slot in 2G option (dual card management) phone works. But problem is mobile internet now just 2G.
p.s. not using 2 sim card.
Build number: EVA-L19C432B166
Click to expand...
Click to collapse
Test if calls and SMS work in the following scenarios (Settings/Wireless & networks/Mobile network)
1) Preferred network mode: 4g/3g//2g auto
If you have VoLTE settings, try VoLTE enabled and disabled
2) Preferred network mode: 4g/3g//2g auto
Disable: Mobile data
3) Preferred network mode: 3g only
Mobile data enabled and disabled

Nothing, still same problem
Then I set in 2g works, like in photo
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rokazas001 said:
Nothing, still same problem
Then I set in 2g works, like in photo
Click to expand...
Click to collapse
And with Preferred 3g only, does Mobile Internet work, and how the connection icons in the Status bar (top left) look like (see a screenshot)
Also, install apps like:
Network cell info lite
Net monster
Net monitor lite
and check for Preferred 3g only, do they show 3g band (cell, etc) the phone is attached to - see my screenshots
And go to:
https://willmyphonework.net/
fill your phone (Huawei, P9, L19), your country and operator and check under 3g does it show green checkmark
PS: I cannot open your Photo in the last post
Edit:
Check your operator's 3g bands (find on the Net or ask them), specially for 3g band(s) available where do you live, against the 3g bands supported by P9 L19:
https://consumer.huawei.com/ph/phones/p9/specs/

now then i updated to EVA-L19C432B399
Apear messange in top "no service" - Selected network .... 4G unavailable.
Then using both cards manualy selected use only 2G, no message warning, but no call and message. Signal indicators both cards almost full.
And then i go back to 1 card message apear again Selected network .... 2G unavailable.
If i restart phone no message warning. And Signal indicators almost full
https://pasteboard.co/IH53BvP.jpg
So 4G available. And on another phone working fine.
https://pasteboard.co/IH550YU.png
https://pasteboard.co/IH57ilO.png
Then i set main card like this in 2G its works call and internet, but another card not. But if i switch them one card will work who is in 2G slot.
It's looks like 1 card for calls 2G and another for internet 4G ....

rokazas001 said:
now then i updated to EVA-L19C432B399
Apear messange in top "no service" - Selected network .... 4G unavailable.
Then using both cards manualy selected use only 2G, no message warning, but no call and message. Signal indicators both cards almost full.
And then i go back to 1 card message apear again Selected network .... 2G unavailable.
https://pasteboard.co/IH53BvP.jpg
So 4G available. And on another phone working fine.
https://pasteboard.co/IH550YU.png
https://pasteboard.co/IH57ilO.png
Then i set main card like this in 2G its works call and internet, but another card not. But if i switch them one card will work who is in 2G slot.
It's looks like 1 card for calls 2G and another for internet 4G ....
Click to expand...
Click to collapse
You have Dual SIM settings to choose which SIM will be 4g/3g, the other will be 2g only.
Also, which to use for Data - see the screenshot.
Set accordingly (4g and Data to one SIM, default for calls the other SIM)
But did you check about 3g bands, as in my previous answer - apparently you cannot attach to 3g at your place. Supposedly, no 3g band to match between your operator and what the phone supports
Because, when you are on 4g (for Data), then it must switch to 3g for calls and SMS (and it cannot if it cannot attach to a supported 3g band)

Main card is card for calls and internet.
Now checked with 3G same problem.
Signal intication almost full. Tryed with mobile data on and off nothing.

Problem solve.
Phone blocked by imei ... Dam how simple to check