Set up LED flash alerts on your iPhone

To get started, tap the "Settings" app on your home screen.

Under settings, you will then want to tap the "General" tab to open up the general settings on the phone. Under the General tab, you'll also find information about your specific iPhone and your usage, settings for things like date, time, and your keyboard, as well as options to reset your phone.

Once you are under the General tab, the next step is to tap on the "Accessibility" tab. While in Accessibility, you can alter settings that have to do with hearing or vision assistance and change some of the ways you interact with your phone.

Finally, to enable the light notification on your iPhone, tap or slide the slider next to the phrase "LED Flash for Alerts," which you will find on the "Hearing" header. Sliding the button right, turning it green, will enable the feature, while sliding the button right will disable the feature.

Once you have the feature enabled, you can back out to the home screen and a expect a brilliant flash on the back of your phone the next time you receive a call or text.

This feature is available on an iPhone 4 or later, running iOS 5 and later. There are no customizable settings, but the LED will flash three times when you receive a standard notification, like for text message, and it will flash non-stop along with an incoming call until the call is answered or the caller hangs up.