I have two Android devices: a Nexus 7 tablet and an HTC Evo 3D phone, both running Android OS 4.03 or higher. The Nexus tablet will connect with both Wireless and Content Server modes. The HTC phone will connect only with the Content Server mode, the Wireless attempt failing with the "Not connected to calibre" message.
Now granted, I can get connected by CS mode, I'd still like to know what the problem is with Wireless mode and the phone. I'm just built that way. Anyone have any ideas? I have tried this with calibre running on a Mac laptop and my Windows 7 machine.