Yes, Micromax Canvas Infinity is a VoLTE mobile phone.
No. Micromax Canvas does not the Gyroscope sensor.
It takes about 2 Hours to fully charge this phone. However, you can use Sony CP-AD2 fast charger to charge this phone in almost half time.
Yes, Micromax Canvas Infinity does have the removable battery. It has huge 2900 mAh Li-Ion battery.
Yes, Micromax Canvas Infinity does have the support for OTG. You can attach pen drives easily.