If your device is used to connect to the business network or access any business information, the device is included in the scope for Cyber Essentials.
For example, if you use your mobile to view your work emails the device then becomes in scope of the Cyber Essentials.
In this scenario it is important the device has the following:
A secure lock / pin on the phone
Malware protection.
Phones can’t be jailbroken / rooted
Updates to the phone must be done within the 14 days