MobileMe, iPhone, iPad, and iPod touch: Some of my emails/updates don't seem to be pushed to my device
Your iPhone, iPad, or iPod touch may not always update when you read, delete, reply to, or move messages in MobileMe Mail, or in an email application on your Mac or PC.

Using a POP account with multiple devices
When using a POP email account with multiple devices, email messages may only appear on the first device that receives them. This occurs when an email client is configured to automatically remove email from the server once an email client has received it. You can configure your email client (or clients) either to keep a copy of the email on the server, remove it after a certain number of days have passed, or keep it until you move it from your Inbox.

How to back up your data and set up as a new device
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.

iPhone and iPod touch: Syncing Notes
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.

iPhone and iPod touch: Calibrating Nike+
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.

Note: Release dates do not indicate availability in New Zealand.