Starting with nightly build r1694, MoSync has fine-grained Permission settings for Symbian S60.
You can find these settings in the MoSync IDE, under Project Properties, MoSync Project, Application Permissions. By default, all permissions are turned off.
A consequence of this is that programs that use Bluetooth will not work on S60 devices unless the Bluetooth Permission is turned on. These programs will, however, still work on the emulator, and on the other platforms, which do not require specific permissions.