Originally Posted by
ajGoes
You should probably switch it to the front camera (as if you were taking a selfie) so you're safely facing away from the sun.
Originally Posted by
ajGoes
I'd face away from the sun, remove my eclipse glasses, and frame the image on the phone using its front (selfie) camera.
Originally Posted by
italdesign
Is that just to be cautious about protecting the back (better) camera, or is there another reason?
It's to avoid looking at the corona with your unprotected eyes, which could be seriously damaged. With your back to the sun and the phone set to use its front camera, you can look at the image on your phone without risking your eyesight. You can then put the eclipse glasses back on and look directly at the eclipse safely.