LENOVO ZUK Z1 is a very relaiable smart phone that u can buy for around 15k it houses around 3 gb of ram good battery life and guys am gonna talk about the built quality guys the mobile has snapdragon 801 chipset and 2.5 ghz quad core processor, it has 5.5"1080p HD IPS LCD screen adreno 330 GPU, and its consists of huge internal storage of 64 GB and DUAL sim slot(nano sim), and its has 13mp rear camera with optical image stabilisation(OIS)and the battery is so good and consists of 4100 mAh and for additional security it got finger print scanner and the the most important thing is it has USB C-TYPE port and the thing that I did not like about this device is it does not external storage slot and the battery that is non removable although the device more plus point than negative it worth your money its a good device to buy.