Apple’s support forum is lighting up with complaints from iPhone users that iOS 11.4 is hammering their battery life hard.
See also : iOS 11.4 tip: How to enable Messages in iCloud (and why you might want to keep this feature turned off)
Devices across the line, from the iPhone 6 to the iPhone X, seem to be sporadically affected. One commonality seems to be seeing the battery drain rapidly overnight.
Some users are claiming that disabling the Handoff feature alleviates the issue, but others are reporting no change after making this tweak. Some of those affected say that restating their iPhone fixed the problem (since this is simple and non-destructive, it might be worth a try).
Battery degradation doesn’t seem to…