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    <p>Have you checked <code>+[MFMessageComposeViewController canSendText]</code>?</p> <p>From the <a href="http://developer.apple.com/library/ios/documentation/MessageUI/Reference/MFMessageComposeViewController_class/Reference/Reference.html" rel="noreferrer">MFMessageComposeViewController Class Reference</a>,</p> <blockquote> <p>Before presenting a message composition view, call the <code>canSendText</code> class method to ensure that the user’s device is appropriately configured. Do not attempt to present a message composition view if the canSendText method returns NO. If SMS delivery isn’t available, you can notify the user or simply disable the SMS features in your application.</p> <p>Starting in iOS 5, you can register to be notified of changes to the availability of text message sending by way of the <code>MFMessageComposeViewControllerTextMessageAvailabilityDidChangeNotification</code> notification.</p> </blockquote> <p>Reasons it might be returning <code>nil</code>:</p> <ul> <li>Device isn't running iOS 4.</li> <li>Device is an iPod Touch/iPad without iMessage enabled.</li> <li>No SIM card? (The view now shows in iOS 6; the app is not notified of the message send failure.)</li> <li>"Device" is actually the simulator. (Perhaps this works in iOS 6 too.)</li> </ul> <p>Similarly, <code>[[MFMailComposeViewController alloc] init]</code> returns <code>nil</code> when no mail accounts are enabled (you can quickly test this by disabling accounts in Settings), but also shows a "No mail accounts configured" alert for you. MFMessageComposeViewController does not do this.</p>
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    1. COExcellent, thanks. I probably should have been more clear in that the issue arises using the simulator, which obviously doesn't have SMS capability.
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    2. COIf there is no SIM card, the app exits. why? it just gives a pop up message "no sim card present". it event send a SMS sent result to the delegate method. then exits. is there any way to prevent it from exiting?
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    3. COHave you checked the console for messages? Does it crash or exit "normally"? Is there a crash log? Does attaching a debugger help?
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A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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