FeedBurner has a mobile RSS feed reader client. It is compatible with any Symbian, S60, Windows Mobile or Palm OS mobile phone which supports J2ME MIDP 2.0/CLDC1.0 (Most latest handsets support this).

The Feedburner mobile client has the following features:

-Supports feeds in all major formats (RSS, RDF, and Atom)
-Smart “If-Modified-Since” content retrieval conserves your wireless bandwdith
-Adjustable content retrieval count (i.e., retrieve only the 5 most recent items to save time/bandwidth) cuts download time and clutter
-Opens original content links in your handset’s default web browser
-Updates feeds manually or on a set schedule
-Displays content in several font sizes