Iphone 16 pro battery draining so fast
My iPhone 16 Pro battery is draining very fast. For example, when I charge my 16 Pro to 80%, it drops to 79 after a long time like 20 minutes, but after that, it decreases by 1% every 5 minutes. Is this normal? Another problem is that I left my 16 Pro at 66% at night, and when I checked it in the morning, it had dropped to %60. I have applied everything Apple recommends to extend battery life. Can this problem be fixed with software?
iPhone 16 Pro, iOS 18