Have been using this phone for almost an year.
I will recommend this phone to anyone looking for a small and fast phone. The phone is handy for one-handed usage. Just slips inside my pocket easily and very easy to operate.
Back camera is excellent and very fast. No complains. Front cam needs improvement though. Still, its above average.
Battery life is also decent. You can get through one full working day easily. Phone has only~1500 mah battery which means it charges even from USB ports of laptops/PC unlike iPads/Samsung phones.
Only downside is the charging port, if you forget your charger, its going to be difficult because remaining all phones use micro-USB.
Overall Excellent Phone. If you want to upgrade from older large screen phone, it may take sometime to get used to the screen size.