I recently uploaded an incomplete answer (with working code) and I've been suggested to not do it since it could get deleted for being a code dump without an explanation.
I argued that I was working over my phone and there are lots of reason that might cause lost of content like System Updates (windows), miss click (close tab/window/navigating/back button), changing tabs in smartphones (forms content might be wiped), battery, etc.
After some talk in the comments (Js window.requestAnimFrame not functioning?) we agreed that if SO implemented a way to auto-save the incomplete answers in the browser storage, there would be no need for those uploads.
I found one question that seems related but it is really old (2011) and not exactly the same issue No auto-save feature in mobile design?
Seems like there's some kind of draft auto-save but I couldn't find a way to recover data with it. If this is already implemented, can someone please explain how it works? And if it's not implemented this seems like a good recommendation.