If you have encountered this exception while you are trying to run IT Staff App UnI, please go to the Settings and trust Hospital Authority by the steps below.
Go to Setting page and then select General
Select Device Management
Select Hospital Authority
Select Trust "Hospital Authority"
Select Trust
Go to the Setting screen and then select security related setting. (Screen is different in different Android Device, for example, Samsung is "Lock screen and security").
Enable "Unknown sources" in the security section
Select OK. You can disabled "Unknown sources" setting after installation has completed.
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