When the phone dialer sends an sms, it will use the Messaging app. That way the sent messages will end up in the messaging provider db and sending will be more reliable. Currently, the phone dialer uses the SmsManager directly. For now, the feature is only available to system apps and the permission is private. Bug 4563486 Change-Id: I10f7e1042683164ee61d01a2aaf738d19084da72