Apple iPhone/iPhone 3G (User manual) - Manual (Page 142)

142 Appendix A Troubleshooting
4 Click “Check for Update.” iTunes tells you if there’s a newer version of the iPhone
software available.
5 Click Update to install the latest version of the software. Or click Restore to restore.
Follow the onscreen instructions to complete the restore process.
For more information about updating and restoring iPhone software, see support.
apple.com/kb/HT1414.
iPhone Accessibility Features
The following features may make it easier for you to use iPhone if you have a disability.
TTY Support (Available in Some Areas)
Use iPhone in TTY mode with the iPhone TTY Adapter (available separately) to use
a Teletype (TTY) machine. See “Using iPhone with a Teletype (TTY) Machine” on
page 113.
Closed Captioning
When available, you can turn on closed captioning for videos. See “Video” on page 116.
Minimum Font Size for Mail Messages
To increase readability, set a minimum font size for Mail message text to Large, Extra
Large, or Giant. See “Mail” on page 111.
Large Keypad
Make phone calls simply by tapping entries in your contacts and favorites lists. When
you need to dial a number, iPhone’s large numeric keypad makes it easy. See “Phone
Calls” on page 35.
Zooming
Double-tap or pinch webpages, photos, and maps to zoom in. See “Zooming In or
Out” on page 25.
Visual Voicemail
The play and pause controls in visual voicemail let you control the playback of
messages. Drag the playhead on the scrubber bar to repeat a portion of the message
that is hard to understand. See “Checking Voicemail” on page 39.
Downloadable, Assignable Ringtones
You can download and assign distinctive ringtones to individuals in your contacts
list for audible caller ID. Create and download additional ringtones of your favorite
songs from the iTunes store (sold separately). See “Setting Ringtones” on page 41 and
“Creating Ringtones” on page 42.