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112 Appendix B Tips and Troubleshooting
 AA (audible.com spoken word, formats 2, 3, and 4)
 AIFF
The following video file formats are supported by iPhone:
 H.264 (Baseline Profile Level 3.0)
 MPEG-4 (Simple Profile)
A song encoded using Apple Lossless format has full CD-quality sound, but takes up
only about half as much space as a song encoded using AIFF or WAV format. The same
song encoded in AAC or MP3 format takes up even less space. When you import music
from a CD using iTunes, it is converted to AAC format by default.
Using iTunes for Windows, you can convert nonprotected WMA files to AAC or MP3
format. This can be useful if you have a library of music encoded in WMA format.
iPhone does not support WMA, MPEG Layer 1, MPEG Layer 2 audio files, or audible.com
format 1.
If you have a song or video in your iTunes library that isn’t supported by iPhone, you
may be able to convert it to a format iPhone supports. See iTunes Help for more
information.
If you can’t open an attachment in an email
The file type may not be supported. iPhone supports the following email attachment
file formats:
 .c, .cpp, .diff, .doc, .docx, .h, .hpp, .htm, .html, .m, .mm, .patch, .pdf, .txt, .xls, .xlsx
If email couldn’t be delivered because the connection to the server on port 25
timed out
You may need to change the port setting on an outgoing mail server for one of your
email accounts. For information, go to www.apple.com/support/iphone and search for
“I can receive email on iPhone but can’t send it.”
If you can’t remember your passcode
You must restore the iPhone software. See “Updating and Restoring iPhone Software”
on page 114.
If you entered data on iPhone that you don’t want to sync to your computer
Replace contacts, calendars, mail accounts, or bookmarks on iPhone with information
from your computer.
1 Open iTunes.
2 As you connect iPhone to your computer, press and hold Command-Option (if you’re
using a Mac) or Shift-Control (if you’re using a PC) until you see iPhone in the iTunes
Source pane. This prevents iPhone from syncing automatically.