[Q] Car Bluetooth with Redmi 1S and Voice via SIM2 topic

I have installed Carbon ROM on my Redmi 1S for a few weeks and have a question regarding bluetooth connection in my car.
I am not sure if this issue is a general problem because i only have tested the phone with Mookee and Carbon ROMs so far.

Here my issue:

In my Redmi 1S i have 2 SIM cards. SIM1 for Data Connection, SIM2 for voice.

I connect the Redmi to my car via bluetooth.
In the display of my car i see the info and phone book from my SIM1.
When i dial out it uses SIM2 as i configured it in the phone settings.

My problem: When somebody calls me (on SIM2) the call is not directed to my car bluetooth. I do not recognize somebody is calling me. This i only see on my phone.
When i take the call on the phone, i can speak via car bluetooth.

Is there any way the the car bluetooth can recognize calls on SIM2?

Thanks for any help!
--cma

[HELP][XT1068] Sim2 stopped working couple of days after updating to 5.0.2 OTA topic

Hi guys,
There is an issue with XT1068 (TITAN RETAILALL Deutschland) with sim2. I had original .17 firmaware, then updated to .23 DSDS and immediately updated to 5.0.2 captured SOAK OTA (indian). 3-4 days moto was working fine, both SIM card and both networks were in a working state. I was received sms and calls. Then SIM2 starts to disappear (like no sim in the slot). Restart usually helped. And finally on 4th or 5th day it disappeared completely. Tried swapping SIM cards between slots, to be sure that both cards are working. Just the same problem was reported by one more guy in the 5.0.2OTA thread.

I tried downgrading to .23 DSDS KitKat using mfastboot / fastboot, then dalvik cache and cache wipe in TWRP. (Had to unlock the bootloader :( ). No success. SIM2 in settings simply disabled (grayed). Then I have flash RETAIL DE .23. still no success. SIM1 works fine, but SIM2 is "grayed".
Current baseband is MSM8626BP_1032..394.88.00R, EMEA_DSDS_CUST.

I found a thread for Moto G1, guy fixed network issue by flashing MODEM couple of times. No success for me.

Any ideas or suggestions? :(