Nokia 5320 manual Data management, Install or remove applications

To view details of a voice, scroll right, scroll to the voice, and select Options > Voice details. To test a voice, scroll right, scroll to the voice, and select Options > Play voice.

18. Data management

■Install or remove applications

You can install two types of applications to your device:

•J2METM applications based on JavaTM technology with the extension .jad or .jar. Personal JavaTM 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 software specifically designed for your device.

Important: Only install and use applications and other software from trusted sources, such as applications that are Symbian Signed or have passed the Java VerifiedTM testing.

Important: Even if the use of certificates makes the risks involved in remote connections and software installation considerably smaller, they must be used correctly in order to benefit from increased security. The existence of a certificate does not offer any protection by itself; the certificate manager must contain correct, authentic, or trusted certificates for increased security to be available. Certificates have a restricted lifetime. If "Expired certificate" or "Certificate not valid yet" is shown, even if the certificate should be valid, check that the current date and time in your device are correct.

Before changing any certificate settings, you must make sure that you really trust the owner of the certificate and that the certificate really belongs to the listed owner.

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