10 Hidden iPhone Features You Didn't Know Existed

Guided Access - Limit your iPhone to a single app and disable certain features with Guided Access.

Shake to undo - Shake your iPhone to undo the last action you took, like typing or deleting text.

Scan QR codes - Use the default Camera app to scan QR codes without needing a third-party app.

Medical ID - In the Health app, set up a Medical ID that can be accessed from the Lock screen in case of an emergency.

One-handed keyboard - In the Keyboard settings, enable the one-handed keyboard for easier typing on larger iPhones.

Hidden trackpad - On iPhones with 3D Touch, press and hold the keyboard to turn it into a trackpad for precise cursor control.

Battery usage by app - In the Battery settings, see which apps are using the most battery and adjust your usage accordingly.

Bedtime mode - In the Clock app, enable Bedtime mode to get reminders to go to bed and wake up, and to track your sleep.

Siri shortcuts - Use the Shortcuts app to create custom voice commands that automate tasks, like sending a message or starting a workout.

Emergency SOS - Press and hold the Side button and either volume button to quickly call emergency services and notify your emergency contacts.