There is a lot going on inside the iPhone Settings app. Most people stick to the basics — setting up Bluetooth devices, connecting to Wi-Fi, and checking for software updates.

There’s so much more you can do within the Settings app, and a lot of it is really, really cool. You adjust one of hundreds of different settings and completely change the way your iPhone looks, feels, and operates.

Our Settings Glossary articles will help guide you when you take a deeper dive into the Settings app and define terms that you don’t quite understand.