Apple iphone 3g 16gb Guida Utente

Troubleshooting 

Sound, Music, and Video 

  

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 “Music” on page 117. 

 

Make sure you are using the latest version of iTunes (go to www.apple.com/itunes). 

  

If you are using the optional dock’s line out port, make sure your external speakers 
or stereo are turned on and working properly. 

iPhone goes to sleep after music has been paused for five minutes. Press the Home 
or Sleep/Wake button to wake up iPhone. 

iPhone supports third-party headsets and headphones with a standard 3.5 millimeter 
stereo miniplug. If you have an original iPhone, some headsets and headphones 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. 

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  

 

AA (audible.com spoken word, formats 2, 3, and 4)  

 

AAX (audible.com spoken word, AudibleEnhanced format)  

 

AIFF  

The following video file formats are supported by iPhone:

 

H.264 (Baseline Profile Level 3.0)

 

MPEG-4 (Simple Profile)