Asus Zenfone 5 a good mobile as compared to the price.
The phone does not lags a bit.as it had 3gb RAM.camera is average not that bad.
The phone has 16gb internal and expandable upto 64gb.
The only nad about the phone is its battery life.
The battery dont even last a day.
Even the sound/volume of the phone is not as that good.
As compared to the price the phone is the best for that range of price.
I am loving the phone since last 2 year except the battery.
best of luck