What are SISX files and how to open them
Are you having problems opening a SISX file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.
What is a SISX file?
A .SISX file is a Symbian Series 3 Installation file.
Files that contain the .sisx file extension are installer files for mobile devices that use the later versions of the Symbian operating system. They are referred to as Symbian Series 3 installation packages.
The SISX files define how the applications are installed on the Nokia phones that operate on the Symbian operating system. Before Symbian version OS 9.1, the installer files were saved as .sis files. Once Symbian OS 9.1 was released, the files were saved with the .sisx extension. This file format makes it easier and more convenient to distribute and install applications onto the Symbian-operated device.
How to open SISX files
Important: Different programs may use files with the SISX file extension for different purposes, so unless you are sure which format your SISX file is, you may need to try a few different programs.
While we have not verified the apps ourselves yet, our users have suggested three different SISX openers which you will find listed below.
Last updated: March 17, 2022
Various apps that use files with this extension
These apps are known to open certain types of SISX files. Remember, different programs may use SISX files for different purposes, so you may need to try out a few of them to be able to open your specific file.
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