If you want to try the emulator route, follow these general steps:
In the heyday of MTK phones, developers created .VXP applications that acted as a "midlet runner." Convert .jar To .vxp
These are Java-based applications. They run on a Java Virtual Machine (JVM). They are platform-independent, meaning a .JAR file could theoretically run on any phone that had a Java Midlet runner installed. If you want to try the emulator route,