The r/J2MEgaming subreddit is the best place to find links to the "fixed dialogue" English patch.
First, let’s clear up the confusion. Konami never officially released a game titled Castlevania 4 Demon for Java ME (J2ME). The title is a hybrid, likely originating from: Castlevania 4 Demon English Version 320x240 Jar Download
Since modern smartphones no longer support Java natively, you can typically run the Castlevania 4 Demon JAR using mobile emulators: : Use apps like J2ME Loader The r/J2MEgaming subreddit is the best place to
: Use the J2ME Loader app from the Play Store. It allows you to load JAR files and set the resolution specifically to 320x240 . Castlevania 4 Demon English Version 320x240 Jar Download