Its nice phone in use. With budget under 12k.
It has 5.5 inch display( resolution1920* 1080) with 441 ppi with mediatek 64 bit architecture processor. 3 gb ddr3 ram and power pack 3300 mah bettry. Inbuilt 16 gb rom memory with otg supported.dolby atmos sound is so better.
Nice viewing agle available in k4 note but need some inmprovements in it like processor mediatek mt 6753 has comes with lower price phones. Camera rear and front has decent quality but not the best in 13 mp and 5 mp. Heavy user has 17-18 hrs of bettery backup and 24 hrs in normal use.
While playing heavy games for 10-15 minutes lag shown in frames. Fingureprint scanner are good it detects 8/10 times. Otherwise 4/5 stars to use and performance .