Camera Function on app

Community Novice

I am a student that used the camera on the canvas app to upload written answers to an exam last week.  I submitted (there was no prompt that any questions had not been answered like on the practice exam) but now my prof is saying I did not submit anything.  She wants the pictures I took with their timestamps, but since I used the canvas app they were never saved to my phone.  How do I access them via canvas?