OnePlus One smart phone will be available in India exclusively through Amazon. To get an invitation to buy this product you need to follow few steps. Before that here are the basic features of the phone
2.5 Ghz Quad core Snapdragon 801 Processor
Adreno 330 GPU
16/64 GB internal flash memory
3GB DDR3 RAM (1866 MHz)
5.5 inch 1080p Full HD, 1920x1080, 401 ppi screen
Corning gorilla glass 3
13 Megapixel Camera with 6 lenses
3100 mAh battery
Cyanogen 11 based Android 4.4 operating system
To get an invitation you can ask someone who has bought a OnePlus phone for an invite or by entering contests and promotional events hosted on our OnePlus Forums or social media channels.
Here is the contest
Spot and click “One in a 1000” contest across the internet
By participating in contests and promotional events hosted by our partners and friends.
Read more here
Here is a prank played on Amazon’s India Country Manager
Here is a review of OnePlus one review from Android Authority