Apple posted a document outlining exactly what its
controversial «power
management» feature does, and announced its $ 29
battery replacement program has begun.
First of all, iOS 11.3 brings Apple's promised
battery health feature which lets you disable the
controversial battery performance
management feature, iMessages in iCloud, the iMessage cloud syncing feature we were promised at WWDC 2017, new Animoji, and better ARKit features.