Why is my theme not showing up under Themes?

There are several reasons why an installed theme, which is visible in Options->Advanced Options->Applications, will not show up in Options->Themes:

Theme was not built for your device or OS version:
Each and every Blackberry theme is Device and OS specific in order for it to showup under Themes on your device. So you must purchase a theme for your Device and matching OS version on your phone.

Dimension Theme Templates are not installed:
In order to install custom themes, the Dimension theme of that style must be on the device (ie, Today themes require Dimension Today, Zen themes require Dimension Zen, etc). These themes are on all devices by default, however some memory guides recommend removing them to save space.

Battery was not pulled after installation:
For themes on devices running software before 4.2.2, the battery must be pulled to complete installation otherwise it will NOT showup under Option => Theme.

IT Policy restriction:
If you are on a Corporate BES which restricts installation of third party applications, you will not be able to use custom themes

Not enough Free Memory:
In rare cases, to little memory can prevent a large theme from being activated.

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