As an administrator, you can enable the display of users' photos or avatars in various controls in the SAP Fiori launchpad, such as the shell header and Me Area.
This functionality is currently provided by SAP Jam and the collaboration features of its ABAP Social Media Integration (ABAP SMI) component.
For information about integrating SAP Jam, see Connecting to SAP Jam with ABAP SMI.
Once SAP Jam is integrated and set up as described and users have uploaded a photo to their SAP Jam profile, they will see their photo instead of the default icon.