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How do I programmatically lock and unlock the main screen (i.e. the device itself) of an iPhone?
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From the Keychain, select the Home the lock is associated with. Navigate to Settings and select the Lock from the House Settings. Go to Auto-Unlock. Toggle Enabled Auto-Unlock to ON.
To lock the iPhone immediately, press the Sleep/Wake button. To unlock it, press the Sleep/Wake button again. Or, press the Home button on the front of the screen.
A pattern lock is a screen-lock that you can unlock by drawing a predetermined pattern, like a shape or an arrow, on the screen. You can put a pattern lock on an iPhone using a tweaked app extracted from a package manager. The tweaked apps are third-party apps that you can download, which are not available on iPhone.
It's not possible. However, you can "prevent" your phone from locking when your app is running. [UIApplication sharedApplication].idleTimerDisabled = YES should do it.
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