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[Q] Simultaneous Sim 1 (Call) and Sim 2(3G Data)

I'm currently using two 3G enabled Sims in my Galaxy Core GT-i8262.
My Sole purpose of getting the Sim 2 was to use 3G Data/Internet on it, while using Sim 1 for Calling and texting only.
I went for Galaxy Core only because i have to use Voice and Data on 2 different Sims separately.
Therefore , i inserted the Sim 2, Went into Sim Manager > Enabled both Sim > Dual Sim Active
I also enabled "Receive incoming calls via Other Sim card while using Data service" in Both Sim 1 & Sim 2.
But when i selected this setting i received a popup "This might slow down the data transmission"
>Also i have Set Data as "Sim 2" in Sim 1, (So only Sim 2 will ne used for Data)
And Sim 1 as GSM Only while Sim 2 as WCDMA Only
But still, when i'm on a call in Sim 1, i can't use the 3G service of Sim 2 simultaneously. Only after disconnecting the call, Sim 2 3G Data starts working,
So the whole purpose of using Dual Sim goes wast when we can't use 3G internet on one sim while on call in the other.
Can anyone suggest how to enable this feature and also to avoid the "The slow data transmission" due to Dual Active Sim.. Otherwise this phone is just a piece of trash as i'll be on call most of the time and i won't be able to check my mail or Whatsapp msgs.

Please.. Anyone reply..

Ask this to samsung CEO he cannot answer that:sly:
Sent from my GT-I8262 using XDA Premium 4 mobile app

While u r on a call on Sim 1 you cannot use the data connection from the Sim 2 even if its on WCDMA. But u can use 3G on the same sim on which the call is being recieved or done ...means Sim 1 can be used for both purpose simultaneously for Calling & Data connection on WCDMA ...even if u r on a call on sim 1 the data connection wont be lost...

hi! i'm not shure if i understand
i want to purchase this phone and i'm not shure if i can use in one sim voice over 3G and in the other one data over 3g.
I don't want to use voice and data in the same time...
Please help me

nobody can help me?

Hi Luciand, are you from Brazil?
My guess is that it is impossible to use voice on SIM 1 and data on SIM 2 because the smartphone have only one modem.
Even if it is capable of receiving calls on both SIM 1 or SIM 2, it is not possible to actively use the two SIMs at the same time.
For some smartphone to be capable of doing what you want, it should have two modems, which I believe would increase its cost and nobody would buy it...
I hope this helps, and if anyone knows better, please correct me!

luciand said:
hi! i'm not shure if i understand
i want to purchase this phone and i'm not shure if i can use in one sim voice over 3G and in the other one data over 3g.
I don't want to use voice and data in the same time...
Please help me
Click to expand...
Click to collapse
You are able to select which SIMs data service the phone uses in the sim card manager under Data service network. However, you cannot use voice and data at the same time, regardless of which sim is set to be used for voice or data (at least here in the US on EDGE network.)

SIM2 Disable When I'm Using SIM1 Data !!!!!

Hi Dear Friends !!
I have ****ed Sony XPERIA C Dual Sim Cards Phone.
I use Sim1 Slot to use for MTN Sim card 3G Data & Sim2 Slot for Call & SMS.
Recently when data is Enable, after first call (Received or Calls) or SMS , My SIM2 network will disable & SIM1 Data No Works.
I Must bring the phone to airplane mode and back then everything be correct for next time call or SMS
my phone is B.0.2.16 Frame-Ware (Official Rom) and i did everything that you can think such as Reset, Reset Factory, Change Sim Card, Flashing New Official Rom & .....
NOW !! WHAT CAN SHALL I DO PLEASE ?????????????????

rima124 said:
Hi Dear Friends !!
I have ****ed Sony XPERIA C Dual Sim Cards Phone.
I use Sim1 Slot to use for MTN Sim card 3G Data & Sim2 Slot for Call & SMS.
Recently when data is Enable, after first call (Received or Calls) or SMS , My SIM2 network will disable & SIM1 Data No Works.
I Must bring the phone to airplane mode and back then everything be correct for next time call or SMS
my phone is B.0.2.16 Frame-Ware (Official Rom) and i did everything that you can think such as Reset, Reset Factory, Change Sim Card, Flashing New Official Rom & .....
NOW !! WHAT CAN SHALL I DO PLEASE ?????????????????
Click to expand...
Click to collapse
That's normal. Xperia C does not support both SIM cards are active at the same time so whenever you receive a call, the other SIM will be disabled. It is dual standby which means one SIM is active at a time. Hope this helps.

I won't disable my sim 2....... But there is no symbol standing for sim2.... Itz. Completely disabled.... Am using Xperia e3 dual.... Can yu please tell me....

Mobile data not working during call

Hi
I am having an issue with mobile data being turned off during a call. I have a dual SIM S8+, when I call on sim 1 the data on sim 2 turns off.
I have it set up that sim 1 is calls and texts and sim 2 is mobile data.
Any ideas how to fix this
Thanks

S8 is dual sim dual standby and not dual sim full active, so when one sim is active on a call the other will be deactivacted and cannot receive calls or used for data at the same time. It is not an error and it cannot be fixed.

Thank you for that. If I just use one sim on the phone. Then will I have data active while calling?

ssadtru said:
Thank you for that. If I just use one sim on the phone. Then will I have data active while calling?
Click to expand...
Click to collapse
If you have data set to sim 1 you will have data during a call on sim 1, but not while on a call on sim 2, and vice versa.
If you only have one sim in the phone, you will always use the same sim for data and calls, so you will not luse data.

Dual sim not working as wanted

Hello,
I use dual sim, one for job calls and second for private calls and data. I have noticed that I cant receive calls on job sim which does not have data enabled. Calls go directly to voice mail and I dont get any alarm.
I have also noticed that job sim works properly when it is set to 2g. However 2g setting always resets back to 4g after reboot.
Is there any way to force second sim to be only in 2g for calls even after reboot? I have rooted device.
Thank you

Athum said:
Hello,
I use dual sim, one for job calls and second for private calls and data. I have noticed that I cant receive calls on job sim which does not have data enabled. Calls go directly to voice mail and I dont get any alarm.
I have also noticed that job sim works properly when it is set to 2g. However 2g setting always resets back to 4g after reboot.
Is there any way to force second sim to be only in 2g for calls even after reboot? I have rooted device.
Thank you
Click to expand...
Click to collapse
Because it is trying to use VoLTE which is using data and you don't have data enabled

Dual SIM VoLTE Verizon and Fi

Hi all,
Here is my situation and problem. I have 2 Sims:
SIM 1: Google Fi - my personal number, I want to use it for phone calls only even though it has a small data lan
SIM 2: Verizon - work sim, I want all the data to go through here.
My setting is phone call sim 1 and data Sim 2.
When I make a phone call via SIM1, I lost LTE on my SIM2.
I did call Verizon to get the CDMA LESS feature turned on.
If I were to change the setting to phone call and data through the same sim, then VoLTE works just fine. So I think this is an issue with the phone itself/settings.
Thoughts?

thetangstr said:
Hi all,
Here is my situation and problem. I have 2 Sims:
SIM 1: Google Fi - my personal number, I want to use it for phone calls only even though it has a small data lan
SIM 2: Verizon - work sim, I want all the data to go through here.
My setting is phone call sim 1 and data Sim 2.
When I make a phone call via SIM1, I lost LTE on my SIM2.
I did call Verizon to get the CDMA LESS feature turned on.
If I were to change the setting to phone call and data through the same sim, then VoLTE works just fine. So I think this is an issue with the phone itself/settings.
Thoughts?
Click to expand...
Click to collapse
You need to go into settings "SIM & network settings".
Select "Dual 4G networks".
I don't have your issue.

tech_head said:
You need to go into settings "SIM & network settings".
Select "Dual 4G networks".
I don't have your issue.
Click to expand...
Click to collapse
I do have this enabled...Didn't help

thetangstr said:
Hi all,
Here is my situation and problem. I have 2 Sims:
SIM 1: Google Fi - my personal number, I want to use it for phone calls only even though it has a small data lan
SIM 2: Verizon - work sim, I want all the data to go through here.
My setting is phone call sim 1 and data Sim 2.
When I make a phone call via SIM1, I lost LTE on my SIM2.
I did call Verizon to get the CDMA LESS feature turned on.
If I were to change the setting to phone call and data through the same sim, then VoLTE works just fine. So I think this is an issue with the phone itself/settings.
Thoughts?
Click to expand...
Click to collapse
I have a similar problem. Voice on SIM1 data on SIM2 different carriers. Receive calls and text OK answering won't work. Roaming in Europe. Worked OK prior to recent update. Same setup works on Samsung S10e

Tom Hardy said:
I have a similar problem. Voice on SIM1 data on SIM2 different carriers. Receive calls and text OK answering won't work. Roaming in Europe. Worked OK prior to recent update. Same setup works on Samsung S10e
Click to expand...
Click to collapse
Can't believe there are so few of us having this issue. Why would the LTE turn off when I'm not even using that sim?

Probably many are using just a single SIM.

Have you tried switching the sims in the slots?
Sent from my SM-T830 using Tapatalk

tcfiero said:
Have you tried switching the sims in the slots?
Sent from my SM-T830 using Tapatalk
Click to expand...
Click to collapse
I have no help. In January Mint had an issue where their SIM had to be in slot 1. So I flipped SIMs. Truphone won't work either.