OneNote Gem Add-Ins

AND: How does Android OneNote Add Rule Line or Grid Line to a Page?

How do I add rule line or grid line to a page in Android phone's OneNote to help draw?

You can adjust your Android phone's OneNote to the tablet mode, which will give you more and more full functionality.
Detail: Use OneNote Tablet Mode on Android Phone for More Full Functionality
Then, in the Android OneNote tablet mode, go to the “View” tab -> “Paper”, you will find the Rule Line and Grid Line feature.