Yes, Smartron SRT Phone is made in India.
Yes, Smartron SRT Phone does have the gyroscope sensor.
Yes, Smartron SRT Phone does support Jio video calling. SRT Phone is a true 4G VoLTE mobile phone.
No. Smartron SRT Phone does not have the MicroSD card slot. You will get 64GB internal memory and unlimited t-cloud space to store your data. Smartron SRT Phone also has OTG support.
Yes, Smartron has already announced that they are going to release Android Oreo update for SRT Phone customers in January 2018.