Does remote control have any effect on the VT headset?

While few devices come with a remote controller, it is used for certain VR apps like YouTube media control, Sachin Saga, and so on. Many VR apps work on gaze controls. Remote controls increase the experience. Using a remote control can help you go seamlessly while using certain VR apps.

Why suddenly we get to see double images?

The content, when seen in VR mode, shall look distorted, you need to align the cell phone to the middle with the lens of the headset. The VR screen shall split the image into two halves and that is the reason you find the images distorted or doubled.

What are resin lenses?

The lenses that are made out of resin instead of cheap plastic are called resin lenses. This has high durability and also prevents you from getting dizzy.