#iOS Tip 97 - Blink When Messaged

Get your iPhone's flash to blink when you get a message
If you find that the vibration or sound that your phone makes when you get a message is not always enough to attract your attention, there's another element that you can add to the alert – light. By going to Settings > General > Accessibility and scrolling down to the 'Hearing Aids' section you can turn on 'LED Flash for Alerts'. Now every time you get a notification, the flash next to your iPhone's rear-facing camera will blink.