我有一个j2me应用程序，midp 1.0
它完全适用于诺基亚n8，诺基亚5233等其他设备，但当我在索尼爱立信Aspen上测试此应用程序时，它会给我一些警告信息，如
Untrusted application
your application wants to send or receive information from
http://myurl/getLaunchDateByDate.php?Launch_date=2012-04-27,
this will use airtime which may cost you money.
Do you allow Net access?
是否与应用程序签名有关？