I have an iPad Air 3 (2019) and it’s still 4:3 ratio. In contrast, my older iPhone 6s+ has perfect crisp mirroring. This is using the AV lightning connector with HDMI
The issue is that the app doesn’t support true mirroring capabilities. Many other apps have had this feature for years. Consider YouTube, Google Slides, and I believe Real Racing 3.
In YouTube, for example, when you mirror over the adapter and HDMI, it sends a full res, full screen video to the monitor while having a control panel on the iPad. You can even close the iPad and it still runs the video.
- Allow Mirroring at full 16:9 aspect ratio over HDMI
- Allow it to continue to run while the iPad is locked or closed.
This would open up the viewing options and make the iOS experience more enjoyable.