Did you know that iOS 9 added new braille display commands? Check out Scott Davert's article for ten more tips on how to more efficiently use your braille display that is paired with an iDevice. To view the full article, go to 10 More Tips for Braille Display Users of iDevices which is posted on the AppleVis website. This article was posted in Oct. 2015.
Be sure to check out Scott's previous Ten Tips for Braille Users of iDevices that was posted in January 2014 - many of these tips are still applicable!
Here's Scott's general information podcast about iDevices with braille display: I Can Feel it: An Overview of Using Braille Display using iOS Devices.