Some desktop themes have been distributed with built-in shortcodes and other functionality. The desktop themes below include standalone plugins that you may install to activate their shortcode handling:
ElegantThemes - Install the ElegantThemes Shortcodes plugin, which can be downloaded in the ET downloads area.
Themify - Install the Themify Builder plugin. Download the plugin in the Themify downloads area.
Shortcodes in themes without a helper plugin are supported from version 3.7 and later: WPtouch Pro can be set to run your content through the desktop theme's shortcode processing.
To enable this compatibility feature, activate desktop shortcode handling in Settings > Site Compatibility > Shortcodes and select Process desktop theme shortcodes.
If that fails to work, open a page/post with shortcodes in it via the WordPress post/page editor and click the "Update" button. Then, reload the page/post in WPtouch Pro and see if that helps resolve the issue.