There appears to be significant gaps in the image controls in Powerapps which I understand are being looked at... What I have found is I can attach the image, and manually copy and paste the attachment url in Sharepoint (or I also have an access query which can do the same) to display the image on mobile and desktop apps, however if I could use flow to extract this url from [Attachments].[FileUrl] would mean we had an immediate solution to this problem... Cheers