Guided Access - Locking an app
Use Guided Access with iPhone and iPad.
Guided Access limits your iOS device to a single app and lets you control which features are available. You can turn on Guided Access when you let a child use your device, or when accidental gestures might distract you.
Set up Guided Access
1. Go to Settings > General > Accessibility > Guided Access.
2. Turn on Guided Access.
3. Tap Passcode Settings, then tap Set Guided Access Passcode.
4. Enter a passcode, then reenter it. From here, you can also turn on Face ID or Touch ID as a way to end a Guided Access session.
Start a Guided Access session
- Open the app that you want, then triple-click the Home button. For iPhone X, triple-click the side button.
- If you want parts of your screen to stop responding to touch, use one finger to circle those areas. You can move or resize the circle, or tap the X to remove it.
- Tap Start.
Or to start a Guided Access session with Siri*, open the app that you want, then tell Siri "Turn on Guided Access."
*Siri features might vary by country or region.
Control which features are available
- To turn off features or set a time limit, triple-click the Home or side button, then tap Options. If you don't see Options, triple-click the Home or side button again and enter your passcode.
- Turn on the options that you want, then tap Done.
Sleep/Wake Button: To turn off the Sleep/Wake button on your device, turn this off.
Volume Buttons: To turn off the volume buttons on your device, turn this off.
Motion: To limit how your device responds to motion, turn this off. For example, your screen won't respond when shaken, and the screen won't rotate no matter how you hold your device.
Keyboards: To turn off the keyboard so that it does not appear, turn this off.
Touch: If you want your device to ignore screen touches, turn this off.
Dictionary Lookup: To use the Look-Up feature when you select text, turn this on.
Time Limit: To choose a time limit for your Guided Access session, turn this on.
End a Guided Access session
Triple-click the Home button or side button, enter your Guided Access passcode, then tap End. Or if you turned on Touch ID or Face ID for Guided Access, double-click the Home or side button.
Taken from Apple's Support Page