\"General\".(2) pull up the page, the penultimate line is \"equipmen" />
① "Settings"-> "General".
(2) pull up the page, the penultimate line is "equipment management".
③ The top line of "equipment management" is "VPN" and the bottom line is "supervision". Note: In systems above iOS9.0, applications that have not been downloaded and installed through the AppStore or have no authenticated digital signature must first enter "Device Management", click the publisher of the application under "Enterprise Applications" and click "Trust" to open the application.