Data - Notifications
Notifications are retrievable from both iOS and Android devices. Application-specific notifications gathered from iOS devices include notifications that are no longer active and can contain otherwise unobtainable information such as emails and messages from applications that haven't been stored in databases.
A jailbreak is required to get more notificaiton data such as, title, source, subtitle, message, timestamp, URL links & pictures.
On Android, only active Notifications can have data extracted, due to notifications being cleared after they are dismissed by the user.