iOS 7.1

Apple released iOS 7.1 this week, bringing new features, bug fixes and design changes. It may have also weakened the battery lives of some users' devices. (Salvador Rodriguez / Los Angeles Times / March 14, 2014)

Apple users have taken to Twitter and the company's website's forums to report weaker battery life after installing an update for their iPhones and iPads that was released this week.

The Cupertino tech giant released iOS 7.1 on Monday, the first major update for iOS 7, which was released last September. The update had been installed by nearly 18% of Apple iOS devices in the U.S. and Canada by Thursday, according to online ad firm Chitika.

The update brought with it new features, bug fixes and a few interface design changes. But many users have also said that the update is causing their device's batteries to drain faster than before.

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On the Apple Support Communities forums, one thread regarding the problem has received numerous complaints.

"My iPhone 5S has been draining like crazy since the iOS 7.1 Update," one user said.

And on Twitter, several users have posted about their device's weaker batteries.

However, the issue does not appear to be universal. Some users have tweeted that their battery life has improved, and the results on a poll on 9to5Mac shows that more users are reporting that their devices are doing just fine since installing iOS 7.1

Apple could not be reached for comment.

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