App, built using the particular OS Version works on devices with the older Version of the OS

A MIDlet worn and built for OS 4.6 and app will work on devices with lower version, for example, 4.5 or 4.2?

I am shocked to see the performance on older devices. All this time, all I knew is that when you build an application using a particular version, it will not work on devices with a lower version.

Good question.

In fact, it is possible to have the code RIM run 'new level', provided that the APIs used have not been changed.  If they have been modified, they you for punishment.

In this case, since you use code Midlet, it is unlikely to have changed and so it can work well.  However it is not officially supported.  So compile it using the oldest level of the operating system you want to support.

In this case, I suspect you will need to download the JDE for compiling back level.

Tags: BlackBerry Developers

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