Why do a few Knox SDK APIs not work on some devices?

To use an API, your device must support the SDK version in which the API was implemented or later.

To check the Knox SDK version that is supported on your device, you can use this API method.

You can find the SDK version from which the API is supported in Javadoc.

For example, the allowDeveloperMode() API method is available since MDM 5.0.

If the value returned on your device is 5.0 or later, you can successfully use the allowDeveloperMode() API method.