A solution for iPad is ForScore, which is basically a PDF reader and annotator with the ability to advance the music automatically when you set up timing for each page. Typically the tablet is in landscape orientation and it displays a page in two passes (top and bottom). You can also get bluetooth foot pedal to trigger when to advance. I don't know of any equivalent app on Android.
However there are some 12" Android tablets (e.g.
Samsung NotePro 12.2), and that might be big enough for full page display (especially with a little cropping), and again you could get bluetooth foot pedals to control page turns.