In the middle of the night, the last thing that I want to hear is my phone ringing, vibrating, or doing a combination of those two things. However, I do want to be alerted when I get a phone call or a text message.
Now there is a way! Instead of having your iPhone ring and/or vibrate when you get a call or message, it can emit a LED flash. Go to Settings > General > Accessibility, then scroll down and turn on “LED Flash for Alerts.”
Be warned this is bright! It allows you to be alerted to an incoming call or text message without the noise involved with a ring tone or vibration.