One of the key benefits of the new 2016 Samsung Gear VR is that it has a USB OTG port that can be used for both charging and for data. The previous Gear VR also had a USB port but it could only be used for charging, not data, when the Gear VR is active.
Being able to use the USB OTG port for data has several advantages. It allows you to watch videos from a USB drive, saving precious space on your phone. It also makes it possible to tether the phone. It is also possible to use it with peripherals such as a Leap motion controller.
If you simply use the Type C to Micro USB adapter included with the Gear VR, then connect a device to the Micro USB adapter, you won’t be able to use the OTG for data. Instead, you need a male Type C to female Type A adapter. The one I got is this one:
It does work, and it’s inexpensive. The problem is that it will protrude from the Gear VR:
If you attach a card reader or other USB device, it protrudes even further: