Lenovo zuk z1 comes with 3 gigs of ram and 64 gb of inbuilt memory which makes it more special.Its a damn good phone.It comes with android lolipop with cynogen os 12.1, which will be updated to android marshmallow and cynogen os 13.
My personal experience about this device is very bad.Cause I got an faulty peice from amazon.But the device is damn good.Then I replaced this phone I got another one and its running very well.
Its good for gaming and specially its for customizing.By cynogen os, we can customize and flash anything in this phone.And our warranty dosen’t got void.