It's worth noting that DEP settings for iOS devices are only applied at time of activation. An iOS device would have to be either new or erased/wiped then (re)activated for the settings to be applied.   There's a Meraki documentation article about DEP, with a couple videos that help walk through the process both on the Dashboard and on an iOS device. ... View more

Support for the Device Enrollment Program (DEP) has been live in Systems Manager for a few years now.   If you navigate to Organization > MDM in your Meraki Dashboard, you should be able to upload or update your DEP server token.   In case it's helpful, this Meraki documentation article goes into setting up DEP in Systems Manager.   Cheers, ... View more

Windows Phone MDM support has been available for several years in the licensed version of Systems Manager.    In case it helps, this Meraki documentation article outlines features available in the licensed version of Systems Manager which are not available in the legacy version of Systems Manager.   Cheers, ... View more

Apple Configurator 2+ is the way to do it without the Device Enrollment Program (DEP). It requires a Mac running Apple Configurator.    There's more information on this Meraki documentation article! ... View more