I really think it would make things better if I could easily expand and collapse all on the mobile app. It's too much to scroll through on a small screen, and also very time consuming to manually collapse each parent. Especially when it needs 2-5 seconds to save after each change.
Please add this feature. I' very fond of Smartsheet, but I'm trying to "sell" this in to my new employer, and small things like this is not helping my case.
Agreed, I was just struggling with navigating many expanded rows.
+1 for this! On one of my large sheets (3000+ rows) if I forget to collapse all when viewing on desktop, which is often the case when a filter is applied and then removed, it effectively renders the mobile app not worth using and I'm forced to wait until I have access to desktop again. Such a shame for functionality that has already been developed on the desktop/web experience!