Like the iPod, the iPhone's battery is not user-replaceable, and must officially be replaced through Apple's own iPhone battery replacement program (though third-party battery replacement programs, like those for the iPod, are sure to appear soon).
The program will cost a total of $86 (a service fee of $79, plus $6.95 shipping). That's $20 more than the iPod's battery replacement program.
Like the iPod battery replacement program, iPhone data will not be preserved in the process. Apple says:
"No, the repair process will clear all data from your iPhone.Â It is important … Read more