I actually broke an old school flip phone doing that once lol

I don’t think the person who made the comic has used a foldy phone or used an old school flip phone. The reason we did that with the old school flip phones was because it was easy to do one handed and absent-mindedly, kinda like one of those spinner toy things

You can’t actually get Foldy phones to do that, I’ve tried. I can only get it to close one handed, not open again