CID Superfecta suppress accented characters

CID Superfecta converts caller name to UTF-8 in the wrong way and suppress accented characters that phones well support. In example "Pubblicità" becomes "Pubblicita".
Since versions I fixed the issue editing Superfecta.class.php and no further issues were created (so it is tested) but the system says the file was tampered. I ask to keep this modification as public.

at line 223

$callerid = mb_convert_encoding($callerid, "UTF-8");

becomes

$callerid = mb_convert_encoding($callerid, "UTF-8", "ISO-8859-1");