Most:
Start fast, captures very well the network where my iPhone was not any, 4G bluffing efficiency, high contrast screen, faster applications, taking quite intuitive Windows hand, beautiful photo quality (but this is subjective) , speaker of good quality (clear voice).
This device consists of 2 parts: a rigid shell for which you can choose the color. The device itself that clips into the hull.
The installation procedure of the SIM and memory cards (micro SD) can give a cold sweat at the beginning: we must hold in one hand the device back in its center, and fold the top right to unclip the shell of the phone . Be careful, though respect the explanatory diagram (label on the back).
Cons:
The biggest flaw in my eyes, is the application library that is not supplied enough compared to the competition. Orange My supplier does not offer me half of his apps available on the Applestore. I can not find any of my apps SNCF (annoying, I travel a lot by train) and it lacks some of the games market standards (ah Clash of Clans).
When launched an application, the more difficult is to understand that it must "kill" (left arrow, long press, crosses on the preview of the application) to really quit. In fact, it consumes no processor resource, memory and battery. If you just like me from another universe (Apple, Android), I recommend the online tutorial included with the device, it is well done and you understand everything in less than 10 mins. When an application bugue, it is almost impossible to "kill", switch off the device and restart it (1 minute in all and for all).
Finally, the storage capacity is limited, in fact there are 2.5 and some go free, the rest being occupied by the Windows system. Hence the obligation to buy a micro SD to overcome this lack if you like lots of music or have intensive applications storage needs.
In summary a good phone, good value for money, worth adding a memory card that lacks a sufficiently provided application catalog (Microsoft being a big player in the market, it is likely find it the means to quickly expand its range of useful applications in everyday life).