Don’t believe you can. Desirable feature: As batch rename, using templates like you can in Classic (eg batch rename to YYYYMMDD_HHMMSS_Filename_text.extn where datetime comes from EXIF). Would love this feature.
I would also appreciate a rename on import feature for Lightroom CC Mobile. Sometimes I like to get started on photo editing while still out in the field, so I use an SD card reader with my iPhone to import photos.
Being able to rename the photos at the start will allow for a consistent workflow and provide an additional and permanent means of identifying and sorting photos if the organizational structure or metadata search fails.
My naming preference is YYYYMMDD_Client_Event_###.
