I will divide my review in pros and cons:
Pros:
1) The zenfone 5 has great design with curved back for comfortable grip and feel well built, its not the most compact phone though.
2) The dual core intel processor is good for gaming and everyday usage and does not heat up much.
3) The powervgr graphics show good graphics in games.
4) The 5inch Hd display with Gorilla glass 3 has good viewing angles and does not appear pixelated.
5) Zen Ui is one of the most beautifull Ui’s and the preloaded apps r usefull.
6) Asus updates the phone regularly with bug fixes and Os updates.
7) The rear camera is the best in this range and the front is decent.
Cons:
1) The battery capacity is only 2000mah and below avg, the lolliopop update makes this worse.