Sometimes if a job gets to a certain stage and cannot continue or there are other special notes that are needed for internal use only, then these can be added by the mobile when certain job status options are selected.
The Job status options which allow internal notes are set in the admin -> configuration -> configure job status options: Add / Edit Job Status Options
If the job status requiring a note is selected, then the mobile user can add a note as below. The internal notes can be viewed in the admin area, job edit screen
