Apple offers a feedback page that lets you submit a bug report if you notice that a feature on your iPhone does not work properly or if you're experiencing crashes when performing a specific task. While Apple may not reply to all received messages, it uses bug reports to find and solve problems with the iPhone hardware and its iOS operating system.
Navigate to the Apple iPhone Feedback website (see Resources).
Type your name, email address and a subject for the message. Select "Bug Report" from the "Feedback Type" drop-down list and type information on the bug in the "Comments" box. Select the version of iOS that your iPhone uses under "Which operating system are you running?"
Click "Submit Feedback" to send your bug report.
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