pages for ios widow/orphan settings

As far as I have ever found, no there are not explicit settings for widow/orphan in Pages for iOS. And yes, every single word processing app I’ve ever used in iOS that was adapted from a desktop app has limitations over the full featured desktop app. MS Word for iOS is no exception either.

MS Office apps for iOS are free if you wish to try them. However with iPad Pro models, MS requires an Office365 subscription to allow full editing features with them. But MS Word, Excel and PowerPoint for mobile devices do not offer the true full feature set that their desktop versions offer.

It's discussed here. I'm not sure if there's an explicit setting, but this will at least suggest where to look.

Pages for iPhone: Add line, page, and column breaks in a Pages document

Did you look in the iWorks for iOS forum?

Here: iWork for iOS