Why can't I see all the Activities' saved searches from Sales in the mobile app?

In Oracle CX Sales Mobile, only some types of Activities' saved searches are supported. These are: Tasks, Calls to Log, and Call Reports. And, generally, the records need to be set as that particular type of record. For example, tasks need to be of Task type, Call Reports need to be of type Call Report, and so on.

For calls to log, the app shows only the My Calls To Log saved search.

Appointments saved search isn't support in the mobile app.