answer:If you’re interesting in jailbreaking your iPhone (which is well worth it if you’re using AT&T, firmware hacks with other providers are a pain in the a**) there are two really great chat apps. Apollo MobileChat Have you used JiveTalk? I found it’s almost identical to iChat and works great. I know some of the other webapps can be a bit janky, but this one is spot on in my opinion.