MDM provides various on-device feature restrictions along with the capability to block all outgoing calls. In organizations where corporate handheld devices are used by employees, restricting outgoing calls can cut down the telecom expenses occurring from personal cellular usage. Refer the following steps to block outgoing calls on Android devices.
NOTE: You can block outgoing calls on Samsung devices and Android devices provisioned as fully managed devices (Device Owner)
Additionally Mobile Device Manager Plus provides you with options to block incoming and outgoing SMS and MMS besides calls. To do so, follow the steps mentioned above and restrict the appropriate option.
Blocking outgoing calls is also possible by making the phone/dialer app inaccessible by the users. MDM facilitates this with the following features.
With App blacklisting, you can blacklist undesirable apps which you don't want you employees to access. Blacklist the phone/dialer app on managed Android devices to make it inaccessible by your employees. This way you can block all outgoing calls from the devices.
Kiosk mode is an advanced security feature supported by Mobile Device Manager Plus which lets you lock down Android devices to run specific apps. As long as you don't select the phone/dialer app to be available in Kiosk mode, it will be inaccessible by your employees. Similarly, outgoing calls can be blocked this way.