Yes, you shall get 1 year brand warranty in India.
No. Blackberry DTEK60 is a single sim Android mobile phone.
DTEK60 has 5.5-Inch Quad HD AMOLED display which has pixel density of 2560 x 1440 and produces 534 PPI.
Yes, you can record 4k videos.
Blackberry DTEK60 Android Nougat update is expected to release soon.
The DTEK60 is probably the best all-around BlackBerry phone in quite some time, building on the progress made by the quirky BlackBerry Priv.
The DTEK60 is a fast, capable phone. Its focus on productivity and security will make business users quite happy.