ios 11.3 feature

Why iOS 11.3 reports battery status 'Maintenance'?
after upgrading to ios 11.3, many of you wonder about the performance reduction feature when the battery is in maintenance status. so why is this message and what does it mean?
Instructions for iOS 11.3 official update to turn off the iPhone slowing feature
if you are looking forward to this update, you can proceed to upgrade ios 11.3 now, and the following article will show you how to update ios 11.3 officially.