Colloquy on your iPhone

[Geffy]

This looks quite nifty. As you know you can't install normal apps onto the iPhone but with a rather spiffy looking web interface you have do all your fun IRC stuff and never miss a message even if your EDGE falls off

http://colloquy.info/iphone/

It runs colloquy as normal on your Mac then sets up a small HTTP server which your iPhone can connect to

 

[SPeedY_B]

Colloquy FTW. This is quite an awesome plug-in, regardless of iPhone ownership

 

[Geffy]

I was thinking of trying it on my PDA, but I suspect it uses Javascript which PocketIE doesnt

 

[NetRyder]

I was thinking of trying it on my PDA, but I suspect it uses Javascript which PocketIE doesnt

If PIE doesn't work, you could also try the latest Opera Mini beta (free) or Opera Mobile.
The other option, of course, is to use a native WM IRC client.