During installation, the device shows information about the progress of the installation. If you install an application without a digital signature or certification, the device displays a warning. Continue installation only if you are sure of the origin and contents of the application.
To start an installed application, locate it in the menu, and select it. If the application does not have a default folder defined, it is installed in the Applications folder in the main menu.
To see which software packages are installed or removed and when, select Options > View log.
Important: Your device can only support one antivirus application. Having more than one application with antivirus functionality could affect performance and operation or cause the device to stop functioning.
After you install applications to a compatible memory card, installation files (.sis, .sisx) remain in the device memory. The files may use large amounts of memory and prevent you from storing other files. To maintain sufficient memory, use Nokia Nseries PC Suite to back up installation files to a compatible PC, then use the file manager to remove the installation files from the device memory. If the .sis file is a message attachment, delete the message from the Messaging inbox.
Remove applications and software
Press 
, and select Applications > App. mgr.. Scroll to a software package, and select Options > Remove. Select Yes to confirm.
If you remove software, you can only reinstall it if you have the original software package or a full backup of the removed software package. If you remove a software package, you may no longer be able to open documents created with that software. If another software package depends on the software package that you removed, the other software package may stop working. Refer to the documentation of the installed software package for details.
Settings
Press 
, and select Applications > App. mgr..
Select Options > Settings and from the following:
●Software installation — Select whether Symbian software that has no verified digital signature can be installed.
●Online certificate check — Select to check the online certificates before installing an application.
●Default web address — Set the default address used when checking online certificates.
