Installation by transfer of a .sis file through OBEX (OBject EXchange), over infrared or Bluetooth, from another device such as a PC, Symbian OS phone or any OBEX-enabled device. This process will be managed via the Messaging application, which intercepts the file attached to the message
—when you open up the message, it will automatically start the application installation process on the phone.
Alternatively, .sis files can be sent as email attachments. Application installation is again managed via the Messaging application on the phone. When you open the message, it will automatically start the installer.