Mac 
iPhone 3GS: Wi-Fi support on models sold in China
This article outlines which iPhone 3GS models support Wi-Fi (WLAN) in China.
About the security content of Safari 6.2 and Safari 7.1
This document describes the security content of Safari 6.2 and Safari 7.1.
About the security content of the iOS 3.2.2 Update for iPad
This document describes the security content of the iOS 3.2.2 Update for iPad, which can be downloaded and installed using iTunes.
AppleCare Pro Video Support Agreement: How to find the registration number
Learn how to find the registration number of your AppleCare Pro Video Support Agreement.
Apple Deployment Programs: Upgrade account to access all programs
Since February 2014, Apple Deployment Programs offers new programs in addition to the Volume Purchase Program (VPP). If you enrolled in the VPP prior to this date, you will need to upgrade your account to an Apple Deployment Programs account. … Continue reading
iPhone: Understanding the TTY symbol in the status bar
Learn how to identify the Teletype (TTY) symbol in your iPhone status bar, and how to turn TTY on or off.
If your third-party display or projector doesn’t work in OS X
Some third-party displays or display software might not work in OS X Lion or later OS X versions.
Apple ID: About the temporary support PIN
This article provides information about the temporary support PIN, a security measure used to verify your identity when contacting Apple Support.
If you see an "Incorrect Apple ID or Password" alert when you set up iCloud in the Setup Assistant
Use these steps if you can’t sign in to iCloud using the Setup Assistant after you update iOS on your iPhone, iPad, or iPod touch.
Use iBooks with PDF documents on your iPhone, iPad, and iPod touch
With iBooks for iOS, you can view, sync, save, share, and print PDFs on your iPhone, iPad, and iPod touch.
