I assume you're talking about some sort of mobile device like a PDA, phone, or other. An RSS feed is just an XML file. It's just a text file. Generally it's displayed in an aggregator or reader software, or on another web page. It would depend on the software you're using to display the file.

hi bill

thsnk for the reply

u mean there is no need to change the general RSS feed file to see that RSS feed file through some RSS reader in the mobile phone device

Plz let me confirm on this

as i m thinking that may be there is different format of RSS feed xml file format for mobile devive so that RSS could be correctly read through mobile phone though using some sort of RSs reader

No. RSS is RSS. There are a few different versions out there, but none specified for mobile. It's probably just an issue with whatever aggregator/feed reader you're using. Make sure the feed validates.