Originally Posted by
SeAAttle
The battery in my iPhone 6S Plus "suddenly" started draining very quickly. Checked the apps responsible and found nothing unusual. Then I remembered that I had turned up the screen brightness to show a few photos. Restored brightness to a moderate level and the problem seems to be solved. Does this make sense?
This also happens to me with the added quirk that the phone randomly resets itself to maximum brightness. I can't see anything I'm going to cause it.