if you want to install free Nokia 5800 quickoffice application, you can use the “Download!” app on your Nokia 5800 main menu that comes with phone to install Quickoffice, you will find Quickoffice app from menu > Download > Applications folder > Quickoffice. then you can install quickoffice app without a licence key. sometimes, during installation it will dispaly a message that the application is not compatible with the phone. you can continue to install. it works fine after installation.