Photo upload from mobile device into conversation is not shown in "Files"

[PisethLim]

I have uploaded photo from my mobile phone into a conversation; however, the photo is not appeared in "Files" as when I uploaded the same photo from my computer. 

Why is that so? Is that anyway I can have the photo uploaded from my phone stored in "Files"?

[#2]

Have you actually checked if the photo arrived to your OneDrive for Business?

[#3]

@Juan Carlos González Martín - Nope, I did not checked. However, when I uploaded the photo from my computer into the conversation, the photo then get stored in the "Files". Only the photo uploaded from mobile device that doesn't get stored. I can't even download the photo from the conversation, if the photo was uploaded from mobile device.