I frequently turn my phone on silent while I'm at work and then forget to turn silent mode off when I get home. If this is also you, or if you have a hard time hearing your alerts, you may want to set your LED flashlight to light up every time a new message or alert comes in.
To turn on this feature, go to Settings and select General>Accessibility. Then scroll down to the Hearing section, and toggle LED Flash for Alerts to On.
You might want to consider turning this feature off before going to the movies though...
Have an awesome tip to share with your fellow iPhone Life readers? Email me at sarah@iphonelife.com.