iPhone Sheep

In some cases, iPhone may not show up in iTunes under Devices while displaying the following error message:

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.

Learn more about TCP and UDP ports used by Apple products, such as Mac OS X, Mac OS X Server, AppleShare IP, Network Assistant, Apple Remote Desktop, Macintosh Manager, and MobileMe. Many of these are referred to as "well known" industry standard ports. Note: Mac OS X v10.5 Leopard and later includes the Application Firewall, which is different from a port-based firewall.

This article discusses the compatibility of the Apple Wireless Keyboard and third-party Bluetooth keyboards with iOS devices.

Immediately after updating to iOS 4.0, some users may notice that Exchange ActiveSync Mail, Contacts, or Calendars do not sync, or sync very slowly. In addition, some Exchange Server administrators may notice their servers running slowly.

When I play music or listen to a call through the speaker phone, the sound may appear low or muffled, or the person I'm talking to claims that I sound muffled or not loud enough. 

Learn why the storage capacity stated in a product's specification may be lower than what is reported by Mac OS X or iOS.

When syncing a device using iOS 3 or later, syncing may stop with Error 13019.

Learn how to find out which version of software is installed on your iPhone, iPad, and iPod.

It is important to create frequent backups of important data. This is even more important if you are using beta software. You should make sure you back up your data prior to entering the MobileMe Calendar Beta.