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Appendix B Tips and Troubleshooting 111
If iPhone isn’t playing sound
 Unplug and reconnect the headset. Make sure the connector is pushed in all the way.
 Make sure the volume isn’t turned down all the way.
 Music on iPhone might be paused. Try clicking the mic button on the headset to
resume playback. Or from the Home screen tap iPod, tap Now Playing, then tap .
 Check to see if a volume limit is set. From the Home screen choose Settings > iPod >
Volume Limit. For more information, see page 65.
 Make sure you are using iTunes 7.3 or later (go to www.apple.com/itunes). Songs
purchased from the iTunes Store using earlier versions of iTunes won’t play on
iPhone until you upgrade iTunes.
 If you are using the dock’s line out port, make sure your external speakers or stereo
are turned on and working properly.
If your headset or headphones don’t fit in the iPhone headset jack
iPhone supports third-party headsets and headphones with a standard 3.5 millimeter
stereo miniplug. Some of these may not connect properly to iPhone because the plug
body is too large to fit in the jack inset. Third-party adapters may be available.
If iPhone shows a message saying “This accessory is not made to work with iPhone”
If you connect iPhone to an accessory not specifically made for it, iPhone may ask if
you want to turn on airplane mode. This is to eliminate radio interference from cellular
signals coming from iPhone. You may be able to use iPhone with the accessory
whether or not you turn on airplane mode. If you turn on airplane mode, you won’t be
able to make calls, send or receive text messages, access the Internet, or use Bluetooth
devices with iPhone until you disconnect iPhone from the accessory or turn off airplane
mode.
If iPhone calls your voicemail service when you tap Voicemail in Phone
If the voice instructions prompt you, enter your voicemail password. Otherwise, wait
until you hear any voice instruction, then end the call. After a time, Voicemail should
become available again.
If you can’t add or play a song, video, or other item
The song may have been encoded in a format that iPhone doesn’t support. The
following audio file formats are supported by iPhone. These include formats for
audiobooks and podcasting:
 AAC (M4A, M4B, M4P, up to 320 Kbps)
 Apple Lossless (a high-quality compressed format)
 MP3 (up to 320 Kbps)
 MP3 Variable Bit Rate (VBR)
 WAV