unicode problem

[ASararu]

my mobile application is a client to a web service. the web service connects to a DB and has to read some data from there which is in different languages. the problem is reading the non-latin characters from the DB. the web service reads anything that's not latin like this: "??????", and sending this to the mobile application won't solve a thing. I tried to create a String in the mobile application with non-latin charcaters and on the console it still displays ????

so when i try this in the mobile application:

String string="\u0421";
System.out.println(string);
all i get displayed is the question mark.

I even tried it as this and the result wqas the same:

String string="\u0421";
byte[] defaultBytes = string.getBytes();
try {
String roundTrip = new String(defaultBytes, "UTF8");
System.out.println(roundTrip);
}
catch (UnsupportedEncodingException ex) {
ex.printStackTrace();
}

The conclusion is htat neither the webs ervice nor the mobile application can read these characters, but when i tried with a normal java application it worked fine.

Got any clues how to get the web service and mobile application to read those characters?