You may want to restore your iPhone, iPad, or iPod touch and set it up as new to troubleshoot an issue. Take steps to preserve your data before restoring as new by following this article.

Using iOS 4 or later, you can sync Notes over the air using MobileMe or an IMAP email account. This article explains certain sync behaviors and shows how to enable Notes syncing.

When using iOS 4 or later, the Nike+ application does not offer an option for a calibration workout. Instead, you can calibrate at the end of any workout.