Samsung Z2 is one of the best tizen OS based smartphone that comes with reliance jio welcome offer upto 31st december.I like its features specially camera.It inculdes S-bike mode and ultra power saving mode.It is one of the cheapest 4G phone that fits in your budget.It comes with special feature of having two whatsapp accounts.It is a multitasking smartphone with good battery backup.Its just awesome smartphone.