For automatic iCloud Backup, iPhone must be locked and connected to Wi-Fi. Apple also commonly notes that the device should be connected to power.

Activation Lock helps protect Apple devices by requiring the Apple Account credentials associated with the device before it can be reactivated or used after being erased. This helps prevent someone else from using a lost or stolen device.

Turn on firewall protection
On your Mac, choose Apple menu > System Settings, click Network in the sidebar, then click Firewall. (You may need to scroll down.) Turn on Firewall.

Removing the enrollment profile unenrolls the iPhone from device management and removes managed configuration settings. That can cause the device to lose required security controls and fall out of organizational compliance. Apple states that when an enrollment profile is removed, configuration profiles and their settings are removed