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Java™
MIDlet is removed from the handset.
•
Always
The security group unconditionally grants access to protected features.
A MIDlet has a security status which is either "uncertified", or else "certified".
An "uncertified" status means that the source of the MIDlet could not be verified by the mobile phone at installation time. As far as the phone knows,
the MIDlet could have been written by anyone.
A "certified" status means that the MIDlet was digitally signed by a known party, whose name is displayed by the mobile phone. This means that the
mobile phone successfully authenticated the named party as the source of the MIDlet.
Security permissions are different for "uncertified" or "certified" MIDlets, and may be different for different sorts of named parties. Usually "uncertified"
security permisions are more restrictive than "certified" ones.
Security configuration menu
When a MIDlet is installed in the mobile phone, default security authorizations are applied.
This default security configuration may be altered through the "Settings/Security" menu of an installed MIDlet.
Once in the "Security" menu, the security status of the MIDlet is displayed (see "Security considerations" paragraph above).
If you do not want to enter the security menu, simply select "Back" button.
You can proceed by selecting "Ok" button.
The menu displayed allows you to increase or decrease permissions currently applied to the current MIDlet for each of the security groups.
When you set a more permissive authorization to a security group than the current value, mobile phone asks you to confirm your increased
risk exposure.
The maximum risk exposure increase is limited by the security status. Depending of the manufacturing configuration, it means, for example, that "Net
Access" security group authorization cannot be set to a permissive value higher that "Session" for an "uncertified" MIDlet ("Single confirmation" and
"Always" are unavailable in the security configuration menu) but an operator "certified" MIDlet may have all permission values available without any
limitations.
What is Java™?
Java™ is a new technology enabling use of powerful applications in the mobile phone area. Business applications and
games are easily downloadable by the end-user on a Java™ featured handset.
Your mobile phone is a MIDP 2.0 compliant Java™ platform which implements WMA (SMS support) and MMAPI
(Multimedia support) options, providing an exciting environment to run highly graphical, networked and intuitive MIDP
applications.
Such applications may be, for example, a wide range of games and appealing applications like action and logic games,
agenda, e-Mail reader, Web browser...
What is a MIDlet?
A Java™ application or a game designed to run in a mobile phone is named a MIDlet (MIDP applet).
A MIDlet is usually made of 2 files:
• The JAD file
• The JAR file
JAD file stands for Java™ Application Descriptor. It is a small file describing the content of a JAR file (version, vendor name,
size...) and displayed by the mobile phone. JAD file size is usually less than 2 kilo-bytes large.
JAR file stands for Java™ Archive. It refers to the application data themselves (program, images, sound). A JAR file may
be up to 200 kilo-bytes large.
NOTE: In rare circumstances, MIDlet vendors may provide no JAD file and the MIDlet is the JAR file alone. In such a case
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