Update to iOS 17: Ensure your iPhone is updated to the latest iOS version, iOS 17.
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Open Messages: Launch the Messages app on your iPhone.
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Select a Contact: Choose the person you want to notify when you reach your destination, or create a new message with them.
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Tap the '+' Icon: Look for the '+' icon next to the message box and tap it.
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Select Check In: From the options that appear, select "Check In."
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Send the Check In: Type a message if you like, then hit send. This will notify your chosen contact.
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Check Compatibility: If you receive a message saying, "Check In is not available to send to this recipient," make sure both devices are running on iOS 17 or later.
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Adjust Notification Settings (Optional): You can customize when the notification is sent. Tap 'Edit' and choose between a time-based notification or one triggered by reaching a specific location.
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Add More Time if Needed: If your plans change (for example, due to traffic), tap 'Details' and then 'Add Time' to extend the notification.
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Ending the Check In: When you've reached your destination, you can end the Check In. Your contact will receive a notification about this as well.
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