SkieDo schedules and policies keep working when a device is offline?
Yes. Skie caches the signed policy, app list and schedule on the device, and the device applies them from its own locked clock, so schedules keep switching with no internet. When the network returns it syncs straight away and picks up any changes. Offline mode with its own allowed apps also exists.
A managed device does not need a live connection to follow rules. The policy bundle is signed and stored on the device, and the device rejects anything that does not verify. The schedule, being part of it, runs from the stored copy against the device's clock.
Because date and time are locked to automatic, going offline does not let a student shift the clock to cheat a window. Automatic time and time zone are forced on and the setting is locked.
There is a separate idea, the sync gate. If a device has not synced within the Due limit, an overlay on unlock tries to sync first and only gates the device if the sync does not finish. Thresholds called Due, Overdue, Offline unusual and Breach are all editable, as is the sync interval.
Offline mode is a deliberate setting with its own allowed apps and an organisation maximum. It ends automatically when the network returns. When the device reconnects it syncs instantly, and a repeating alarm about every four minutes reports its presence. A missing check-in counts as a breach, so a silent device shows up. A practical tip: set the offline apps to what a student genuinely needs for a day of work, and pick thresholds that match your connectivity. A rural school will want a longer Due limit than a city office.