BlackBerry has alleged Twitter infringed on six of its patents, like push notifications, silencing notifications for a message thread and mobile advertising techniques.
Optiemus Infracom launched the BlackBerry Evolve in August at a starting price of Rs 24,990.
According to the Blackberry-Optiemus deal, the company will license its security software and services suite, as well as related brand assets to the latter.
The DTEK 60 comes with a 5.5-inch Quad HD AMOLED display with a 21-megapixel A/F rear camera and an 8-megapixel selfie camera with flash.
The BlackBerry Neon, Argon and Mercury will run on Android operating system but whether they'll come with Android N or Android Marshmallow is still unclear.
BlackBerry's BBM service will be expanded to Android and iOS users from this weekend.
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