According to the MMS conformance document, the region names are limited to "Text" and "Image". That means once the root layout defines the orientation (e.g. Text over Image), every slide in the slide show must follow the same...
I was able to use the Ericsson MMS composer and found it to be more flexible in slide layout (i.e. text over image, image over text, etc). Is this the same case for Nokia 7650 and other MMS capable Nokia handsets?
nokia 7650 does not support slide presentation -- mms message w/ smil (multipart-related). what 7650 does is it ignores the smil and present the mms message (multipart-mixed).