Console2File to log even when a device is not connected to Xcode.
it's very simple; call Console2File.start() in the AppDelegate as the first command of everything.
Then you can download the console output by connecting the device to the Xcode go to the Organizer, select Devices, select your device, select your app, select Dowload container after you can able to display the content of file, with right mouse key, and you navigate to Document folder for get the log file.
that's all.