Allows read only access to phone state, including the current cellular network information, the status of any ongoing calls, and a list of any PhoneAccounts registered on the device.
android.permission.READ_PHONE_STATE
Allows an application to initiate a phone call without going through the Dialer user interface for the user to confirm the call.
android.permission.CALL_PHONE
Allows an application to read or write the system settings.
android.permission.WRITE_SETTINGS
Allows an application to collect component usage statistics.
android.permission.PACKAGE_USAGE_STATS
Allows an app to create windows using the type LayoutParams.TYPE_APPLICATION_OVERLAY, shown on top of all other apps.