Depending on your goal, you can use specialized software or manual extraction: Dedicated Software Tools Sis 2 siSx & Jar Converter by AR - GSM Softwares
Often fail with complex application files like SIS because they only support basic data file conversions (like documents or images). Dedicated Conversion Software sis 2 jar converter
Because Symbian and Java ME have different GUI conventions and security models, a converted app may not look or behave exactly like the original. Depending on your goal, you can use specialized
Understanding the SIS 2 JAR Converter: A Guide to Legacy Mobile App Conversion Depending on your goal
Some SIS files are actually "wrappers" that contain a Java MIDlet inside. A converter like SIS 2 SISX & Jar Converter can easily extract this inner JAR file for use on Java-enabled phones.