You can use any device to access and upload content to Workflow.
It is our recommendation to use a computer or tablet when adding and editing content.
If you use a phone to upload content to Workflow please read the following guide
Workflow and Mobile Devices Guide PDF 

• Use this page to share your Unit 3 documents.
• Please upload all documents in PDF format.
• For guidance on how to upload and edit content see Workflow section on Moodle