Samsung SM-G970F User Manual page 257

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Appendix
Interaction control
Activate interaction control mode to restrict the device's reaction to inputs while using apps.
Launch the Settings app and tap Accessibility → Interaction and dexterity →
1
Interaction control.
2
Tap the switch to activate it.
3
Press and hold the Power key and the Volume Up key simultaneously while using an app.
4
Adjust the size of the frame or draw a line around an area that you want to restrict.
5
Tap Done.
The device displays the restricted area. The restricted area will not react when you touch
it and the device's keys will be disabled. However, you can enable functions for the Power
key, Volume key, and keyboard in interaction control mode.
To deactivate interaction control mode, press and hold the Power key and the Volume Up key
simultaneously.
To set the device to lock the screen after deactivating interaction control mode, launch the
Settings screen, tap Accessibility → Interaction and dexterity → Interaction control, and
then tap the Lock when deactivated switch to activate it.
Touch and hold delay
Set the recognition time for tapping and holding the screen.
Launch the Settings app, tap Accessibility → Interaction and dexterity → Touch and hold
delay, and then select an option.
Tap duration
Set the duration you must touch the screen for the device to recognise it as a tap.
Launch the Settings app, tap Accessibility → Interaction and dexterity → Tap duration,
tap the switch to activate it, and then set the time.
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