65D a t a m a n a g e m e n t16. Data management■ Install or remove applicationsYou can install two types of applications to your device:• J2METM applications based on JavaTM technology with the extension .jad or .jar.PersonalJavaTM applications cannot be installed on your device.• Other applications and software suitable for the Symbian operating system.The installation files have the .sis or .sisx extension. Only install softwarespecifically designed for your device.Important: Only install and use applications and other software from trustedsources, such as applications that are Symbian Signed or have passed theJava VerifiedTM testing.Installation files may be transferred to your device from a compatible computer,downloaded during browsing, or sent to you in a multimedia message, as ane-mail attachment or by using Bluetooth technology. You can use NokiaApplication Installer in Nokia PC Suite to install an application to your deviceor a memory card.To find installed applications, select > Applications > My own.To open Application manager, select > Settings > Data mgr. > App. mgr..Install an applicationThe .jar file is required for installing Java applications. If it is missing, the devicemay ask you to download it.1. To install an application or software package, select Installation files, andscroll to an installation file. Applications on the memory card are indicatedwith .2. Select Options > Install.Alternatively, search the device memory or the memory card, select theapplication, and press the scroll key to start the installation.During the installation, the device shows information about the progress of theinstallation. If you are installing an application without a digital signature orcertification, the device displays a warning. Continue installation only if youare sure of the origins and contents of the application.Java applications may attempt to, for example, establish a data connection orsend a message. To edit the permissions of an installed Java application and define