SIS file extension

Symbian Operating System Installation File

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The .SIS file format is used to store a collection of files in a single installation file for installing applications on devices using the Symbian Operating System.

To install these files you'll first need to ensure the .SIS is located on your device which may require transferring the .SIS file to your device using the supplied software. Once the file is transferred, you'll need to locate the .SIS file and run the installer.

Many devices such as PDAs use the Symbian OS, as well as many makes of phone (Nokia, Motorola, Sony Ericsson etc).