fuse version 0.21.0 (build 6650) OS X version 10.11.5 Xcode version 7.3.1 iphone5s ios 9.3.2
no special steps, all steps was following the quick start tutorial on this site. the example project is failed to connect.
I assume this is while previewing? In these cases it’s usually a firewall issue, or the phone and the computer might be on different networks. See if any of the points here are of any help.