Since the update, the function of disabling sim cards is not working anymore. I do see many unsatisfied customers and no comment from the side of Fairphone. That means that people are getting more and more frustrated (see bugtracker about this) and are not recommending FP2 anymore or even switching to other dual sim phone.
Fairphone stands for a community, a movement, working on a more fair world. Dual sim is one of the really great features of FP re waste/environment. And now FP is giving up on this.
Please Fairphone, take our comments serious and get this function back as soon as possible.