Enlarge / The control center has a new interface for adjusting brightness.
Apple’s new iOS 11 software for iPhones and iPads rolled out yesterday, but its adoption is slightly slower than that of its predecessor, and as is often the case, various issues have been reported by early adopters.
iOS 11 had been installed on just over 10 percent of supported devices in the 24 hours after it went live, according to data from Mixpanel.

That’s slightly slower than adoption of iOS 10 at launch (which was just over 14 percent after 24 hours).

Tech wisdom has long held that people are generally wise to hold off installing major new OS releases until a couple of iterations in. However, Apple has always prided itself on its users’ rapid adoption rate of new software releases, citing it as a metric in past conference keynotes and reports.

This is still a good pace of adoption for the industry, but a handful of issues could explain the slower movement.
In fact there may be one big issue, and a few smaller ones. Most of the issues are likely to be resolved in a short time, but there are a few that we’ll have to get used to. You’ve probably already read about the Apple Watch Series 3’s LTE connectivity problems—that’s an example of something that will get fixed for later adopters. What follows are some of the iOS 11 problems on iPhones and iPads.
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