Conditional Access Policies will be the cheapest way to achieve this capability. More advanced MDM capabilities are available through Intune, Basic Device Security Policies and App Protection Policies.
Disable logging in from smartphones

Francesco Della Morte
40
Reputation points
Hi,
we're using a Business Standard license of 150 people. We have huge amount of data on every single OneDrive and SharePoint but we would block access to this data outside the Organization.
I red a lot of articles about Conditional Access, but our license doesn't support this feature. In order to avoid data loss, we're considering to block at least access to 365 applications from Android and iOS. Is Conditional Access the ONLY way to block users, or does exist any other available "free" option that does not require a license upgrade?
Thanks in advance
Accepted answer