Can phones be locked automatically at lights-out in a hostel?
Yes. A night window in the schedule switches the device to a short list at lights-out, usually calls and a clock, and back again in the morning. It runs on the device by itself, even offline, and windows can run overnight. Hostel night mode keeps calls allowed so students can still reach home in an emergency.
The usual rule is simple: at a set time phones stop being entertainment devices. Skie enforces it with a schedule window attached to the hostel group. The window has the days, a start time such as 10 pm, an end time such as 6 am, and the apps allowed inside it.
In a typical night window the allowed list is just the dialer and the clock. Games, video, social apps and browsers are hidden for those hours and reappear when the window closes. Calls stay open, so a homesick or unwell student can still ring a parent or the warden. If you prefer, the window can be stricter or looser by day, for example later lights-out on weekends.
The schedule is stored on the phone, so a poor signal in the dormitory makes no difference. The clock is locked to automatic time and time zone, so changing the date does not skip a window. Settings that could undo the rule, such as safe mode, factory reset and airplane mode, are blocked or locked.
Because the first matching window wins, you can layer windows: a study block in the evening, then lights-out, then morning. Different floors can have different times if a junior block goes to sleep earlier.
Per-app time limits and daily screen time limits are not available yet, and the team is working on them. Windows are the tool today.
A practical tip: introduce the lock with a week of notice, and tell students that calls always work. A lock that students believe is safe for emergencies meets far less resistance.