Well, I bought this phone 4years ago.the cost of this phone was 13500at that time.i got to know about this phone from my friends and when I saw the features of this phone, I was shocked because it gave 64GB internal memory2.5GHz quad-core Qualcomm Snapdragon 801 processor with 3GB of RAM.( The Zuk Z1 runs Android 5.1 and is powered by a 4100mAh non-removable battery.) well.i was very much happy initially but later on when I came to know that there were no updates available for the software of the phone I really got disappointed but at the same time , didnt want to buy any new phone.however, it gave the support to me for minimum of 3.5years and during thelast year , its battery power started degrading and I couldnt spend more than 3-4hours without charging my phone.but I must say that it was a good phone to use though I couldnt have any updates of this phone even most of the users of this phone also changes its custom ROM i.e., cyanogen for availing the updates.in the present scenario, I suggest you not to buy this phone because if you love updates or if you want to see the changes in android phone upgradation, then please dont buy it . otherwise, I loved usingthis phone.only had to change it due to the battery problem.
Thank you.