I had been stuck with the problem of receiving the original Japanese text sent by web service. I was receiving the text in English correctly but instead of receiving the Japanese text I was getting some weird symbols.

And the fix was very simple:

Change the encoding type to NSUTF8StringEncoding when you initialize your Return value with the NSData object..

NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:&urlResponse error:&error];

NSString *jsonString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];