Database Develop

[SOLVED] Dual SIM: 4G/3G?

Does the OnePlus 3T support both SIMs on anything above 2G? I have one SIM (lets call it SIM X) that needs to use 4G/LTE (data only plan), the second SIM (lets call it SIM Y) is used for text/talk and needs to use 3G because the service providers doesn't have a 2G signal. Can the 3T (Canadian version) support this setup?
I've tried asking OnePlus this question, i get a different reply everytime. Hoping someone from the community could give me a definite answer.
Thanks
SOLVED: So I bought the 3T. The scenario outlined above works. And it is dual sim standby.

No problem setting it up like you described in cm13 and I think oxygen will work also. I did data on my sim 1 and calls and texts on sim 2 setting it at wcdma only and it works fine on 3g only.

954wrecker said:
No problem setting it up like you described in cm13 and I think oxygen will work also. I did data on my sim 1 and calls and texts on sim 2 setting it at wcdma only and it works fine on 3g only.
Click to expand...
Click to collapse
Thank you very much. This is exactly what I was looking for
Are you located in Canada too?
Edit:Just notcied that your location is set to San Diego.

954wrecker said:
No problem setting it up like you described in cm13 and I think oxygen will work also. I did data on my sim 1 and calls and texts on sim 2 setting it at wcdma only and it works fine on 3g only.
Click to expand...
Click to collapse
So you have tested that it works on Cm13, but havent tried it on OxygenOS ?

How to force 4g LTE on sim 1 or sim 2 as needed?

I am using the dual sim Exynos version of Note 9 and want to be able to force 4g LTE on either of the two sims as needed.
Can someone please advise how to do this on an unrooted phone? Thanks

Anyone?
I also found no solution. I think it's possible without root but no one is updating the Phone Information Apps. We need to get access at phone information 2 and not only on 1

Mine are both 4G / LTE. Inever need to switch the Sims around. Whichever I choose for days gets LTE. this is different from what I had in the Note 8. I was pleasantly surprised. Therefore it may be a settings issue for you. I have the Note 960F/D

you may try quickshortcutmaker app on exynis version and follow instructions in video
https://youtu.be/AdGAB4qRvYA

I feel like the Tasker App could handle this easily.

I dont understand the actual need.
Simply changing preferred network mode from LTE to 3G shall do to stop LTE on any sim.
I use LTE on both sims for calls
I use LTE for data on specific sim by making it as preferred sim for data.
Settings -- Networks -- Sim card manager shall help in these settings.
I am on exynos N960F Indian firmware.

sri4xda said:
I dont understand the actual need.
Simply changing preferred network mode from LTE to 3G shall do to stop LTE on any sim.
I use LTE on both sims for calls
I use LTE for data on specific sim by making it as preferred sim for data.
Settings -- Networks -- Sim card manager shall help in these settings.
I am on exynos N960F Indian firmware.
Click to expand...
Click to collapse
You don't understand the actual need ??
So i will tell you
On my work i am located in a big Hall underground. The Provider i need down there is only coming in with -110 dB and less which is one LTE Bar. If i leave Automatic Mode it switches always in 2g Mode because of much higher Signal. So to get a nice experience and have LTE always available there is no other solution. The same kind of problem is on my other LTE Sim when on different Locations during the Day ! So i have no time to always switch sim cards so that sim2 is forcing lte !
And off course no one else knows this and so i benefit of this extremely fast connection where all others are crying because of no 4g connection

yaesudx said:
You don't understand the actual need ??
So i will tell you
On my work i am located in a big Hall underground. The Provider i need down there is only coming in with -110 dB and less which is one LTE Bar. If i leave Automatic Mode it switches always in 2g Mode because of much higher Signal. So to get a nice experience and have LTE always available there is no other solution. The same kind of problem is on my other LTE Sim when on different Locations during the Day ! So i have no time to always switch sim cards so that sim2 is forcing lte !
And off course no one else knows this and so i benefit of this extremely fast connection where all others are crying because of no 4g connection
Click to expand...
Click to collapse
OK understood.
Did not you get one UI already which has option of LTE only selection too for network mode.

Negative. Here the German Rom (dbt csc unbranded)
Has never got LTE Only mode in the menu. This is also for all European Roms. I have had this only when using Root and Custom Roms.
Because i use many banking and streaming apps it's not possible to root this time. Even with Magisk Hide they will not work.
If i could i would have rooted long time ago. This is getting me Crazy really

yaesudx said:
Negative. Here the German Rom (dbt csc unbranded)
Has never got LTE Only mode in the menu. This is also for all European Roms. I have had this only when using Root and Custom Roms.
Because i use many banking and streaming apps it's not possible to root this time. Even with Magisk Hide they will not work.
If i could i would have rooted long time ago. This is getting me Crazy really
Click to expand...
Click to collapse
Many apps available on play store to force 4g LTE.

zohawkish said:
Many apps available on play store to force 4g LTE.
Click to expand...
Click to collapse
Sorry but are you reading my Post?
I am talking LTE Only on Sim Slot 2 of any Samsung Phone out today. All the LTE Only Apps or the Phone Info Menu where they lead you is only working on Sim Slot 1.
I am sure there is a dial code like the one it gets you to the Phone1 Information Screen where you can change the bands. But only for Sim 2 (Phone info 2) on Samsung.
So again LTE Only on sim Slot 2 on Samsung Duos Versions is not Possible @ the moment without Root!
If there is any Dev out there you would be the first One to create an app where Phone INFO 2 is possible to change! Or just find the right hidden code for that i know it's there like the Phone Information 1

Hi,
There's an option to force the selected APN to LTE only but I don't know if it will behave like you want to.
What's great is that it's per SIM so you can try any combinaisons.
Deselect "undefined" and select only the "LTE" one (screenshots).
I expect that if it find any other bands getting a better signal than LTE, it will just let the phone loss the signal and not trying to catch the LTE one, but you can try.

zohawkish said:
Many apps available on play store to force 4g LTE.
Click to expand...
Click to collapse
Nastrahl said:
Hi,
There's an option to force the selected APN to LTE only but I don't know if it will behave like you want to.
What's great is that it's per SIM so you can try any combinaisons.
Deselect "undefined" and select only the "LTE" one (screenshots).
I expect that if it find any other bands getting a better signal than LTE, it will just let the phone loss the signal and not trying to catch the LTE one, but you can try.
Click to expand...
Click to collapse
Hey thanks for that. I really was in hope this could work but that would have bean to easy. Unfortunately it's not changing bands after deselecting undefined and than choose some network mode it remains to the same band but it looses the mobile data symbol (but still remains in same band).

sri4xda said:
OK understood.
Did not you get one UI already which has option of LTE only selection too for network mode.
Click to expand...
Click to collapse
Hey what's your CSC code I'm flashing and changing all csc and I can't get vowifi volte and call recording, I just figure out xxv and ins have the call recording enabled, please help me I have a N960F/DS

try *#2263#

Try *#2263# some ROM's it works, some it doesn't Brings up the ServiceMode Network Selection where you can choose individual technologies and bands.

@Class said:
Try *#2263# some ROM's it works, some it doesn't Brings up the ServiceMode Network Selection where you can choose individual technologies and bands.
Click to expand...
Click to collapse
This code and all Codes are not working on European Samsung Devices with Android 9 .
I Even Rooted my Galaxy Note 9 and all the hidden codes are Not working ! Even Samsung Phone Info App or other Apps are not working with Latest Android 9.
Only way is Root and Custom Rom like Alex Dev Rom where the CSC is Modified. There it was possible to change both Sim to LTE Only ! But as told before with Root
i loose to many services which are detected even with Magisk . So my next Phone will not be Samsung anymore because of that.

Call Issue in S10 in Exynos Indian Variant

Hello Guys,
I am having a weird issue in my S10 regarding call.(Using Airtel)
I am unable to call anyone through the phone if the Network mode is set to anything other than LTE/3G/2G (auto Connect) (e.g - 2G Only , 3G/2G and so on).
Other the LTE mode , when I try to call someone the call gets cut immediately without any message , ring or anything else.
I tried putting the sim card in my Redmi Note 5 pro and set it to 2G mode , and it worked several times.
So can anyone provide a solution or if anyone can confirm whether they are facing this issue or not?

subhad43 said:
Hello Guys,
I am having a weird issue in my S10 regarding call.(Using Airtel)
I am unable to call anyone through the phone if the Network mode is set to anything other than LTE/3G/2G (auto Connect) (e.g - 2G Only , 3G/2G and so on).
Other the LTE mode , when I try to call someone the call gets cut immediately without any message , ring or anything else.
I tried putting the sim card in my Redmi Note 5 pro and set it to 2G mode , and it worked several times.
So can anyone provide a solution or if anyone can confirm whether they are facing this issue or not?
Click to expand...
Click to collapse
Hello, which carrier do you have? In my case i have Idea which fails to provide a 4g+ service in certain area/region followed by which you cannot call or receive calls on LTE/3g/2g. Try using a different sim card which has 4g+ service in your area/region.
Regards

Mandark52 said:
Hello, which carrier do you have? In my case i have Idea which fails to provide a 4g+ service in certain area/region followed by which you cannot call or receive calls on LTE/3g/2g. Try using a different sim card which has 4g+ service in your area/region.
Regards
Click to expand...
Click to collapse
I am using Airtel 4G. There is 4G in my region, the issue is I can call when its set to LTE (4G). But setting the network to 2G or 3G causes the issue. I tested the 2G and 3G in my Redmi Note 5 Pro and they are working in that phone so I believe it's not regional issue.
Anyway I will do a factory reset to check if it works(Tried settings reset and network reset. None of them resolved the issue).

subhad43 said:
I am using Airtel 4G. There is 4G in my region, the issue is I can call when its set to LTE (4G). But setting the network to 2G or 3G causes the issue. I tested the 2G and 3G in my Redmi Note 5 Pro and they are working in that phone so I believe it's not regional issue.
Anyway I will do a factory reset to check if it works(Tried settings reset and network reset. None of them resolved the issue).
Click to expand...
Click to collapse
I have the same combo and 2g calls works just fine.
Updated to the latest may patch.

mehra1 said:
I have the same combo and 2g calls works just fine.
Updated to the latest may patch.
Click to expand...
Click to collapse
I Did factory reset today. Its working fine now. Thanks for all the help

VoLTE not working :(

I can't seem to get VoLTE working on my RM3.
I'm with Telstra (major Australian mobile carrier) and have confirmed that they have activated VoLTE on my service.
I have ensured 'Enhanced 4G LTE Mode' is turned on in Settings.
Have restarted phone several times, reset network/sim settings etc, etc but VoLTE is still not showing or working.
Is it working for others? Any assistance you can provide please @JerryYin ?

Texan1 said:
I can't seem to get VoLTE working on my RM3.
I'm with Telstra (major Australian mobile carrier) and have confirmed that they have activated VoLTE on my service.
I have ensured 'Enhanced 4G LTE Mode' is turned on in Settings.
Have restarted phone several times, reset network/sim settings etc, etc but VoLTE is still not showing or working.
Is it working for others? Any assistance you can provide please @JerryYin ?
Click to expand...
Click to collapse
It's strange that the VOLTE is not working, it should be supported by deafult. Which firmware you are using?
---------- Post added at 03:26 AM ---------- Previous post was at 03:23 AM ----------
Texan1 said:
I can't seem to get VoLTE working on my RM3.
I'm with Telstra (major Australian mobile carrier) and have confirmed that they have activated VoLTE on my service.
I have ensured 'Enhanced 4G LTE Mode' is turned on in Settings.
Have restarted phone several times, reset network/sim settings etc, etc but VoLTE is still not showing or working.
Is it working for others? Any assistance you can provide please @JerryYin ?
Click to expand...
Click to collapse
And also have you tried to enable VOLTE in service menu?

JerryYin said:
It's strange that the VOLTE is not working, it should be supported by deafult. Which firmware you are using?
And also have you tried to enable VOLTE in service menu?
Click to expand...
Click to collapse
NX629J_ENCommon_V2.09 although when I go in and check for software updates it says my current version is 3.0
Have checked service menu and "VoLTE provisioned" is turned on (is there anything else I need to check in here?)
Thanks.
Edit - I've also tried a sim from a different mobile provider in my RM3 and no VoLTE with that sim/carrier either

Texan1 said:
NX629J_ENCommon_V2.09 although when I go in and check for software updates it says my current version is 3.0
Have checked service menu and "VoLTE provisioned" is turned on (is there anything else I need to check in here?)
Thanks.
Edit - I've also tried a sim from a different mobile provider in my RM3 and no VoLTE with that sim/carrier either
Click to expand...
Click to collapse
If your operator is based on a gsm network, it may not work, I'm using China Telecom and I can get VOLTE working, it is a CDMA operator, however, my another gsm based sim card can not get the VOLTE working on NX629. I'm not sure that the Red Maic 3 can woek on all operator and all get the VOLTE function. Sorry for that.

JerryYin said:
If your operator is based on a gsm network, it may not work, I'm using China Telecom and I can get VOLTE working, it is a CDMA operator, however, my another gsm based sim card can not get the VOLTE working on NX629. I'm not sure that the Red Maic 3 can work on all operator and all get the VOLTE function. Sorry for that.
Click to expand...
Click to collapse
But VoLTE does work in Australia with all of our major mobile networks so that shouldn't be the issue?
Could it be that our two main carriers both use LTE Band 28 for 'best' 4G connection and the RM3 that I was sent does not have that?
EU Version
FDD-LTE: Band 1/2/3/4/5/7/8/12/17/18/19/20/26
TDD-LTE: Band 34/38/39/40/41
TD-SCDMA: Band 34/39
WCDMA(WCDMA): Band 1/2/4/5/8/9/19
CDMA: BC0/BC1 GSM: 850/900/1800/1900 MHz
NA Version
FDD-LTE: Band 1/2/3/4/5/7/8/12/17/18/19/20/25/26/28/30/66
TDD-LTE: Band 34/38/39/40/41
TD-SCDMA: Band 34/39
WCDMA(WCDMA):Band 1/2/4/5/8/9/19
CDMA: BC0/BC1 GSM: 850/900/1800/1900 MHz
Can any other RM3 users please comment on if they have VoLTE working or not?

No Volte on UK's EE network.
On top of that, I can't even use "enhanced LTE" option, if I turn it on I get no caller id (when someone calls me I only get unknown caller instead of the name or number of the person).

In india Global version VOLTE is working perfectly for both sims on global Rom as well as Chinese ROM. You dont ses VOLTE but HD icon next to signal bar in CN rom. On vlobal rom when you are calling someone you see HD.

praveenparvani said:
In india Global version VOLTE is working perfectly for both sims on global Rom as well as Chinese ROM. You dont ses VOLTE but HD icon next to signal bar in CN rom. On vlobal rom when you are calling someone you see HD.
Click to expand...
Click to collapse
Interesting. Thanks for the info.
Firstly, my sim settings look different to yours, not sure why Nubia has made this setting different in roms for the same phone?
Secondly, I managed to have VoLTE work today with a different mobile carrier sim - I tested and 4G was remaining on during calls! But no VoLTE or HD symbol was evident in the notification bar along the top. @JerryYin can you please confirm if the VoLTE symbol should show on RM3 software? If not, can this be added in a software update please.

check in the calling screen HD should appear.

praveenparvani said:
check in the calling screen HD should appear.
Click to expand...
Click to collapse
Yes it does but I really thought the VoLTE symbol should appear in the notification bar?
On my OnePlus 6T, the VoLTE symbol is permanently displayed in the bar when VoLTE is turned on.

Nubia's way of VOLTE = HD

Nightpwish said:
No Volte on UK's EE network.
On top of that, I can't even use "enhanced LTE" option, if I turn it on I get no caller id (when someone calls me I only get unknown caller instead of the name or number of the person).
Click to expand...
Click to collapse
voLTE does work on EE. If you have enhanced LTE option turned on and make a call I think you'll find that the call is made via 4g. It also has WiFi calling on EE which can be enabled through the phone app.
Like you say though, using voLTE and WiFi calling does render incoming calls as showing unknown numbers. I'm still trying to figure out why it does this, it's obviously something to do with the IMS settings as it's not optimized to work on EE's network.

gazm1990 said:
voLTE does work on EE. If you have enhanced LTE option turned on and make a call I think you'll find that the call is made via 4g. It also has WiFi calling on EE which can be enabled through the phone app.
Like you say though, using voLTE and WiFi calling does render incoming calls as showing unknown numbers. I'm still trying to figure out why it does this, it's obviously something to do with the IMS settings as it's not optimized to work on EE's network.
Click to expand...
Click to collapse
Please let us know if you figure it out.
WiFi calling would be great for me, as cellular signal is poor in my area.

Question Network Issue - unable to register to 2g/3g

Hi. I don't know how to fix this. I have mi 11 cn version flashed with eu rom.i have 5g and lte signal for both sim cards but they can't make or get in coming calls( my network tries to go back to 2g/3g signal to make a call). I tried both my sim cards to another phone and they are working just fine. I was able to manually switch them to both 2g and 3g with the other phone. I did the *#3646 thing to manually choose a network but it still doesn't work. Tried to reset this a couple of time and even reverted back to cn rom still no luck.

Haven't studied this in detail so not even sure if it is even an issue. But I heard china 5G or 4G etc networks and phones use certain radio bands that are different than in US or Europe or other continents. Perhaps this is why your phone has no 5G reception...?

i have 5g reception.the one that is not working are 2g and 3g.this was working before.im not sure if it it due to eu rom.i know the signal are good because i tried my sim card on a different phone and all receptions are working.

eidelon1301 said:
i have 5g reception.the one that is not working are 2g and 3g.this was working before.im not sure if it it due to eu rom.i know the signal are good because i tried my sim card on a different phone and all receptions are working.
Click to expand...
Click to collapse
Check your apn settings....they may be wrong

apn settings are correct