same issue here, I have an iPhone 11, I upgraded to ios 14 on Saturday and was everthing is fine, but two days ago my iPhone started heat a lot and the battery was drain so fast. I checked the battery status and shows the health app is on 93% of usage but I don't use it. I check the storage and the health app was "11,02 PB". Not GB, but "PB"?!?!