I am using asus zenfone 2 ze551ml from may 2015 right from the beginning i.e. as soon it was launched in the market via flipkart.
This was a 4gb ram variant and it was technically the first 4gb ram model launched by any company in india.
The phone worked super fast and showed an outstanding performance in the few of the months of beginning. After some months, it started showing bug problems, the UI started lagging, the battery performance started declining.
These problems doesn't come up everytime but yes they occur regularly after certain periods of time.
The design of the phone is nice but it is too uncomfortable to carry.
If you are using 4g or wifi then the battery would drain drastically.
Moreover there are so many bug problems in the phone after the software updates and stuff like the notification bar will come down upto half automatically if you are working in the middle of something.
So beware to buy this phone. It will work perfectly in the beginning but you never know the end.
