Calling number with special characters in J2ME Nokia

java-me,midp,j2mepolish,nokia-s40,cldc

I'm just going to put my comment as an answer here, so you can mark the question as answered. You're getting an invalid number error because there's no comma in a telephone number. When looking at your address book, there may be a comma as a visual representation of a...

J2ME “notifyDestroyed()” is not working properly on Nokia 501

java-me,nokia,j2mepolish,nokia-s40

You say you call notifyDestroyed() when you press Left Soft Key? So, you have a keyPressed(int kc) method that calls notifyDestroyed()? If yes, don't do it like that. The only place you should call notifyDestroyed() is in the destroyApp() method, after you've done whatever cleaning up you feel like doing....