OnePlus will spend money on marketing only "when it really, truly adds value" for fans

Starting as a young, small company, OnePlus last year entered the smartphone market with a marketing budget of $0 (yup, that's 0 bucks). But the company quickly gained notoriety - even before its OnePlus One smartphone became available to order - and had to spend something on marketing: "$300, $10,000, and eventually even more", according to OnePlus. Still, what the startup is spending is nothing compared to the marketing budgets of larger smartphone makers. And this won't change, at least not in the near future.
The OnePlus 2 will be officially announced later this month, on July 27. OnePlus confirmed that the new smartphone would not cost more than $450. The company also revealed some of the upcoming handset's features, including: an octa-core Snapdragon 810 processor (which reportedly doesn't overheat), 4 GB of LPDDR4 RAM, a fingerprint scanner, and a USB Type-C connector. The OnePlus 2 might also have a metal body, and a 1080p display measuring 5.5, or 5.7 inches.
source: OnePlus
Things that are NOT allowed: