I've read that messages such as the above are as a result of using unsigned midlets. So, is the only way to prevent them popping up by using signed midlets? What about the Midlet-Permissions entry in the descriptor file.
Is it possible to set up your own phone to not ask these questions? Like you would a browser or something. Or can't you just get the app to ask once during install and not every time during execution.
if you have to get it signed, what is the easiest way, and does it cost?