If you experience an issue where the iPhone suddenly refuses to deliver audio through the earpiece (you can't hear phone calls, speaker not working, earpiece not working), only delivering audio when the speakerphone option is turned on, or an issue where no audio is delivered through headphones or the Apple stereo headset, there is a simple fix that we also noted as part of our iPhone Update 1.0.2 coverage: unplug then re-plug headphones or any other compatible device into the iPhone's audio jack several times. This simple routine has solved the problem for countless iPhone Atlas readers.
At root, the problem appears to be that the iPhone "forgets" which mode it is in, erroneously thinking that it should still send audio through the audio jack instead of the earpiece. Failing this fix, try the following:
- Reset your iPhone by holding down the sleep and home buttons until the Apple logo appears;
- Restore your iPhone: Click the Restore button under the Summary tab. Restoring the phone will erase contacts, calendars, photos and other data on the phone, but will restore automatically backed-up information including text messages, notes, call history, contact favorites, sound settings, widget settings, etc.