Not bad but beug

I fell for this phone there is some time, it is quite what I was looking for so hyper departure happy!
In fact, the screen is just the right size, it is simple to use and has some nice applications especially for me who had just separated from my iphone 3GS.
But I'm still disappointed because for a new phone, he quickly had some beugs. Nothing really annoying but still ... this is not what we expect from a pay phone that price.
I also had an unpleasant experience because at the very beginning of using this phone I download apps like facebook and Snapchat result my phone and literally emptied the battery level in half a day, suddenly I ' had to reset the entire phone. I do not know if it was due to beug or mobile apps but if it happens you know that simply reset everything and now the battery lasts about 2 days (which I find really good for this type of phone ).
The phone received was not French, he was a Croat (from what I've identified - including original language), I do not think it's related to that, but it still seems important to the notified.