Is it possible to auto hide/show header in jr5
Design and Skin Customization
Try using the smarty jrCore_is_mobile_device() or jrCore_is_tablet_device() calls in the templates -
{if !jrCore_is_mobile_device() && !jrCore_is_tablet_device()}
// Show header
{/if}
Remember that you'll still need to include the meta.tpl template somewhere for JR to work properly.
hth
Pa