Yes, Smartron SRT Phone is a dual sim 4G mobile phone. You can use 2 4G Sim cards at the same time.
Yes, Smartron SRT Phone does have the VR support.
No. Smartron SRT Phone does not have the IR Blaster.
Yes, Smartron has already announced that they are going to release Android Oreo update for SRT Phone customers in January 2018.
Yes, Smartron SRT Phone does have the video calling support.