How do I increase the font for a device running iOS 10?

To increase the font size in the OverDrive app on iOS 10, you'll need to use the Libby app, as it's the recommended reading platform. Within Libby, you can adjust the font size by tapping the screen to reveal the menu, then tapping the "A" icon to access font options and adjust the text scale. 

 
Here's a step-by-step guide:
  1. Open the Libby App: Libby is the OverDrive app for reading ebooks and audiobooks. 
     
  2. Open the ebook: Browse your loans and open the ebook you want to read. 
     
  3. Access the menu: Tap the center of the screen to display the navigation bar and timeline. 
     
  4. Adjust font options: Tap the "A" icon (usually near the top of the screen). 
     
  5. Adjust text scale: Use the slider to increase the font size. 
     

Choose font style: You can also select different font styles, including a dyslexic-friendly font. 

By following these steps, you can easily customize the font size and style to suit your needs while reading ebooks and audiobooks in the Libby app, which is the recommended OverDrive app experience for iOS 10.