Good catch.... I might have been fooled. Here is the answer in the official faq:How’s it work on cases? Looking at the lightning end, there’s not a lot of room for extra clearance that you’d normally have with a wire (ie thinner to allow fitting through cases).
Why doesn’t Backbone One work with a standard phone case?
We designed Backbone One to avoid compromising on gameplay at all costs. We’re so confident that the experience of playing on Backbone One is so much better than playing on your phone, that players will be happy to remove their cases to enjoy Backbone’s benefits.