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Create a post, upload your profile photo to the post, copy the url that is generated (between the parentheses), cancel the post, go to your profile settings and paste the URL field for your profile image. Done. Instructions below:

https://steemit.com/newbie/@dwells/how-to-upload-a-display-pic-response-to-dirtdiver

Some of us use a PC and not a "smartphone" for PC matters.

Same thing for a PC. It's actually easier on a PC. @ironshield

Good to know.
I guess I have better ways to pass my time than to upload a pic to here.
Also, I am more cautious since this is still an immutable blockchain.