Built-in Feature: Android 6.0 (Marshmallow) - LG

Audio settings : Stereo / mono

Route both right and left channel audio source material into both earbuds, enabling users to hear both channels in each ear.

Detailson: Audio settings : Stereo / mono
Built-in Feature: Android 6.0 (Marshmallow) - LG

BrailleBack : Screen reading

Displays the content on the screen in braille. The application “Google BrailleBack” must be downloaded and installed from the Google Play Store. BrailleBack requires a refreshable braille display with Bluetooth compatibility to function.

Detailson: BrailleBack : Screen reading
Built-in Feature: Android 6.0 (Marshmallow) - LG

Large Text : Font size

Increase text size (up to 56pt) in Calendar, Contacts, Mail, messages and more.

Detailson: Large Text : Font size