Call Screen Lock is an Android app developed by Duckbone Apps (2129 North A StreetElwood, Indiana 46036).

Call Screen Lock first became available on 08 Mar 2013. It is estimated that Call Screen Lock has been downloaded between 100000 and 500000 times from the Play Store.

Call Screen Lock 3.6 requires the following permissions:

Allows applications to open network sockets.

Allows an application to see the number being dialed during an outgoing call with the option to redirect the call to a different number or abort the call altogether.

Allows read only access to phone state, including the phone number of the device, current cellular network information, the status of any ongoing calls, and a list of any PhoneAccounts registered on the device.

Allows an app to create windows using the type TYPE_SYSTEM_ALERT, shown on top of all other apps. Very few apps should use this permission; these windows are intended for system-level interaction with the user.