Voice Call Audio Resolution

Well, Milominderbinder recommends a few things in the "Getting Started" section:

http://forums.androidcentral.com/ge...started-android-tips-tricks-2.html#post483167

And in the current "best 3 apps" thread, someone recommends "Titanium Backup"

http://forums.androidcentral.com/android-applications/111363-top-3-must-have-apps-android-2.html (post 17)

It might be worth starting a thread just to talk about backup options, though, as it isn't built into the phone at all. The phone doesn't even remember which free apps you've downloaded. Just remembering the names of the free stuff and reinstalling it has been a pita.