I have to agree with kataimi. I was considering writing a post similar to his for some time.
It is roughly the same situation for me: pre-ordered the phone in Sept 2015, got it in beginning of 2016. Since then, I have not recommended it to anyone because of all the different issues I encountered since then.
By issues, I mean all the points listed in the initial post above + losses of network + SIM card that is not recognized + phone not detected by PC/Mac for USB functionalities; all of the previous points occurring randomly.
The only thing that works well is this forum where I found many turn arounds or help when I couldn’t fix the issue myself.
I did contact the support to share my experience, they proposed me to send back the phone to get a new one. Beside the fact that I have to get and use another phone during the replacement time (not really convenient), the disappointment has broken my trust in this product and, at this point, I am not even sure if I will continue using my Fairphone 2.
It is a shame as I completely support this ethical and modular concept.
As a guy who has been working in the mobile phone industry for 9 years, my personal opinion is that the FP technical team needs to muscle up and propose a better quality product with much much less bugs because those just give a bad image to what every manufacturer should do!
I do not expect a Fairphone to have the same design of the likes of iPhone and Samsung but just that it works as flawlessly as those guys.