The second part of my investigations regarding pictograms is on-line at
It comprises compatibility tables for UNICODE pictographs in WP, iOS and Android, and caters for feature phones by establishing the correspondence with WAP and Openwave icons. There are some tips about detecting support for pictograms with WURFL.
I am now polishing a third and last part detailing how to implement custom pictograms on mobile phones.
I hope mobile Web developers will find this useful.