Mobile: XBlock Support
Visit the 
Content Components database to see XBlock support levels. Within that database, we have added columns to show: Mobile Support and Mobile Offline Support.
This is still in review. There are five levels of support:
native implementation (only videos and discussions)
full support with injections: webview support that has been validated with injections to make content render correctly for mobile
full support without injections: webview support that has been validated and did not require injections
unsupported: blocks that will not render. will instead render a fallback image
untested: blocks that must be tested; not yet validated. may or may not render correctly.