This is the result of a test workflow on my phone to edit and upload a photo in WordPress.
Hopefully, it will be the correct size (ie 600px wide)
As it stands, the workflow is:
Take picture (duh!) > Edit in Photoshop Express app > Resize in Photo Resizer App > Embed in post via WordPress App.
A few more steps than would be ideal but it’s not a showstopper when the convenience of blogging on the move is taken into account. I don’t blog at all so it’s all kinda moot! 😀