Form factor: Slim and easy to operate with one hand. I would say it hits the correct spot between a small phone and a phablet. The screensize is small enough for day to day phone usage and big enough for your media consumption.
Battery: Worst, doesn’t even last a full day.
Camera: Average.
Performance: Even after a year my lg nexus 5 doesn’t slow down a bit. Its perfectly fast even today.
Call quality: Good if operator coverage is good.
You can pick up this beast for around 10-15K(second hand) in good condition if you don’t want to spend too much money.