OnePlus Loop VR headset available for free; view OnePlus 3 unveiling and buy the phone (UPDATE)
UPDATE: WHOA! The Loop VR Headset is already listed as being out of stock on the OnePlus website. There is no word on whether OnePlus will replenish its inventory.
Once you pair the headset with your phone, you are taken (virtually, of course) to OnePlus' Loop. This virtual space station is where you will be able to view the unveiling of the OnePlus 3, and purchase the handset before others. The date of the OnePlus 3 VR event has not yet been announced.
Last year, OnePlus shipped out 30,000 Google Cardboard VR headsets for the OnePlus 2 unveiling. The company has 30,000 Loop VR headsets waiting to ship. To order your free VR headset, you will need to copy the following URL and replace the 'UK' country code with the one used for your country. For example, if you live in the U.S., replace the UK with US. The address is http://oneplus.net/uk/oneplus-loop-vr.
source: OnePlus via AndroidAuthority