I have installed Qt SDK on my macbook.I would like to know that if I connect mobile phone with symbian to qt and if I build project using qtmobility-bluetooth extension (which is not support on mac(?))-will my mobile app works on mobile?
In the first place Windows is the only officially supported host platform for Symbian development. In case of mac please check remote compiler option if any. Since you are building bluetooth for Symbian target that has nothing to do with mac support of bluetooth.
Are you using Windows platform? Could you tell me if you can launch every bluetooth examples from qt 4.7.4 without issues?