Just another follow-up on this. I've been dealing with this issue via Apple (via an ongoing bug report) a lot over the last few weeks. I get out of the studio every day in the afternoon for a lunchtime walk. And with the cold weather up here in Canada, battery drains a lot faster than normal outside, so I've been able to hit that 50% mark pretty consistently to monitor the issue . And on an average day, with sunglasses on, the force-dimming at 50% drain makes viewing the phone nearly impossible. Even without sunglasses, it's not much better. So, been testing this almost daily and updating Apple about the issue.
Well, looks like I've been wasting my time. Last night, after filing an update regarding 10.3 beta6, Apple came back with the following:
This issue behaves as intended.
We are now closing this bug report.
So, I guess that's it. We're stuck with it. I'd rather my battery drain faster and still be able to use my phone, then have the battery last longer, but not be able to use it. Very frustrating.