Samsung A7 Dual SIM issues after OS upgrade to Mashmallow - Galaxy A3, A5, A7, A8, A9 Q&A, Help & Troubleshoot

I just upgraded my SM-A700FD to Android 6.0.1 and had trouble with Dual SIM operations.
My SIM 1 is on LTE data whereas SIM 2 has no data. Whenever I make a call on SIM 2 (incoming or outgoing) my data connection on SIM 1 is lost. I have enabled Dual SIM Always On in SIMCard Manager under Setting.
I tried in Safe Mode and still the same. Does anyone has the same issue? This seriously render the Dual SIM phone unusable.
The SIM Card Manager also force SIM 2 to 2G if SIM 1 is set to LTE/3G/2G (Autoconnect), even though my SIM 2 is on 3G network but using only voice and text.
When I am using data on SIM 1 to browse or running Apps, I can receive SMS text on SIM 2 without interrupting SIM 1 data, but as soon a voice call is established on SIM 2 the data on SIM 1 is lost.
Would appreciate it if anyone can help.
Thanks!

Related

S7 Edge dual SIM control

Hi Guys !
I have a Samsung S7 edge duos, for which i want to use two SIM cards - SIM 1 is my home SIM, and SIM 2 is a Global roaming SIM with data and Voice.
My question is whether its possible to set my phone in such a way that when I go on roaming i want my SIM 1 to deactivate data services and SIM 2 data services to kick in, since this a global SIM.
Is there an App for that or is there some kind of settings for the same.
Help in this regard would be highly appreciated.
Thanks
John
Not sure if you can do this, maybe with a task scheduler? Best choice is just to manually set your SIM2 to be the main SIM.
The only thing that might work is to call transfer sim 1 to sim two so that any calls received will ring on sim 2 which you can select as the active.
You can not cross connect the apns since they are linked to different sim cards.
Did you try all the dual sim manager apps? they say they do just that!!!

"switch off" only one SIM seems not possible

Hey there
I have the following situation and basically this is the reason why I've bought a dual SIM
SIM 1 - Vodafone Italy
SIM 2 - Yallo Switzerland
SIM 1 is used ONLY for receiving phone calls and I want to have it 24/7
SIM 2 is more a working SIM, I am using it for phone and internet
Evening I want to switch off SIM 2, don't want to be bothered with calls nor I care for internet.
First problem when I try to "disable" SIM 2 I got the message that the SIM is set as primary (whatever it means) so I cannot disable it (why ????????????)
Trying to findo out what is the reason I have discovered that if I select data on SIM 1, then I can switch off SIM 2 (whaaaaat ?????)
Seems that I am not free to do it
The other thing is ... to "disable" the SIM, I have to go to Settings | SIM and mobile network click on SIM 2 and disable
This is not what you want to do just before going to sleep, I expected something very easy to switch off SIM 1 or 2 based on needs
How can I solve the problem ?
Cheers
Steve

4G LTE No longer functioning on phone

Hi All!
I own a Lenovo K6 Power as you can already tell,
in which the Data functions were working without any issues.
A few months back I started using 2 sims instead of 1. Since one carrier had faster internet and better connectivity than the 1st.
Still using the 1st SIM for calling and 2nd SIM for data. Occasionally I would switch to the 1st SIM for data when my data pack was over for the 2nd SIM etc...
So one fine day, I was switching back to SIM 2 (Sim I use for data) (Normally when you switch SIMs both deactivate and reactivate with new settings ie SIM 2 for Data).
So while this was happening like usual it took a few seconds to switch SIMs in the midst of this I suddenly got a call...
Which I was unable to answer till the buffering animation left my screen.
When that did get over... Both my SIMS were set to EDGE 2.5 g when they were always recognised as HSPA 3G and 4G LTE for SIM 1 and SIM 2 respectively.
Now I am unable to attain the speeds I used to, it is just barely usable now...
I then tried the usual troubleshooting (Airplane Mode on/off, Deactivating / Reactivating SIMs, Swapping SIMs physically from their slots and Finally Rebooting...)
Now when I recently tried doing the same my 2nd SIM which I usually use for Data appears as SIM Card Not Ready...
However, when I individually insert SIM 2 it is read by the phone
But still, whether I individually insert the SIMs or together the phone recognises both the SIM cards as 2.5g EDGE.
They used to be HSPA 3G and 4G LTE.
But now I can't use Data on my phone which is the major problem...
Please Help
Reset ur phone.
Is there any other option?
Apart from this...
I don't want to lose my data.....
What if that doesn't solve the problem...

Switching between sim for data or disable a Sim.

Is it possible to switch data usage between sim cards in sm-g935fd with LineageOS. I have this phone and would like to switch from using Sim 1 to sim2 after I use up o the data limit on that sim and vice versa. When I disable data on sim1 the phone says no data connection even after restarting and turning on and off airplane mode. On the stock rom that I don't like because of touch with, I can just disable Sim 1 and enable sim 2 and use data on that sim.

Dual-SIM: No mobile data when calling

Hello!
So I've received my second SIM with unlimited data some days ago.
I've noticed that I can't use data (from SIM 2) while being in a call on my main SIM 1.
So both SIMs (Main: Vodafone Germany; Secondary: o2 Germany) have VoLTE activated and working. I get the VoLTE 1|2 icon in my status bar when activating the dual-4G option. SIM 2 is set as standard for data - SIM 1 ist standard for all the other stuff.
Why do i have no internet-connection while being in a Call? Using only 1 SIM everything works just fine: I can be in a call and use data simultaneously.
Even if i set SIM X as standard for both calls and data everything works. Sadly it seems like i can not use data from SIM 2 while being in a call with SIM 1.
Thanks in advance!

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