50% Battery drain overnight on my iPhone SE after recent update to 13.4. And it is because of Siri. I disabled “press home for siri” and also keyboard dictation. Siri still uses
iOS 13.4 Review: A friendly update for iPhone - All Things How
Apple iOS 13.4.1 Release: Should You Upgrade?
Apple Releases iOS and iPadOS 13.4.1 With Fix for FaceTime Bug - MacRumors
Massive battery drain after updating to i… - Apple Community
Apple releases first developer betas of iOS 13.4, watchOS 6.2, more - 9to5Mac
If you updated to iOS 13.5.1, there's a reason your battery is draining fast
iOS 13.4 Review: A friendly update for iPhone - All Things How
Iphone 7 battery issues ios 13.4, siri 10… - Apple Community
iOS 13.4.1 battery life tests (Video) - Geeky Gadgets