I first got this Oneplus One Sandstone Black version 2 months ago. As a iPhone user i was confused and disoriented at first using Android operating system. However as times goes, i discover more and more things which I can customize. Being able to customize the appearance of the operating system to my liking is the freedom i would never get from iOS.
At the end for me what is utmost important is the camera. I am no longer the typical Asian with big camera hanging around the neck (from the Germans' point of view) every single time i went to events and gathering. The aging process has forbidden me to hang heavy object around my neck and the depreciation of DSLR depend on the shutter count. Who knows one day I could afford a Hasselblad or upgrade to 5D Mark III or IV.
To me, smart phone is more like a phone camera rather than a camera phone. The camera function will always be my first priority and crucial factor in making decision which phone to buy. The camera works quite well under a well lit situation,even though sometimes i find the colour of the pictures is a bit under-saturated or washed out. Under low light condition the camera performs badly, in which the pictures become (too) noisy due to the high ISO boost. I guess that's price to pay when the maker decides in favor of high mega pixel over high ISO performance. For a phone with a price tag of 300€, it is not a surprise.
The good news is that there are tons of apps where you can fix the pictures (not if the noise level is too high though). My favourite one is Snapseed from Google.
Here is the link to the pictures taken by me using Oneplus One at Audi Museum in Ingolstadt. The pictures are heavily edited in Snapseed.