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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
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
the manufacturing
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
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,
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:
-
-
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.
use
of
providing
an
The JAD file
The JAR file
powerful
exciting
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