Apple's iOS 9 Wi-Fi Assist feature for iPhones and iPads has been roundly criticised for rapidly consuming mobile data allowances.
Wi-Fi Assist was added in iOS 9 and is native to the iPhone 6S/6S Plus. It is designed to use a mobile broadband connection to bolster internet connectivity when WiFi is weak or unstable.
The tool automatically supplements a WiFi connection if it is running poorly to ensure that internet browsing and the use of apps that rely on a connection remain undisrupted.
However, the feature has caused some iOS 9 users to end up chewing through their mobile data allowances at an accelerated rate.
I usually use 1-2GB of mobile data a month, this month I’m up to 7. I suspect iOS 9 wifi assist, anybody else? pic.twitter.com/7T3J0bQf8m— Jim Ray (@jimray) September 24, 2015
Others voiced their disapproval of Wi-Fi Assist on Twitter.
"Wifi assist" is the worst thing Apple have ever introduced, wondered why my data was going so quick !!!— beth :-) (@bethritchiexxx) September 29, 2015
Some were more positive about Wi-Fi Assist, but were not overly enamoured with iOS 9 as a whole, despite Apple's latest mobile operating system receiving a strong review score from V3.
Right, time to update iPhone to iOS9. Not much changes really (or ones that I will use anyway) but like idea of Wifi assist— Andrew Yee (@andrewyee) September 29, 2015
Part of the problem stems from apps updating in the background of iOS 9, which can sap mobile data without users realising, potentially landing them with a costly bill at the end of the month. But there are controls in place to tailor how apps tap into a cellular connection.
Wi-Fi Assist is enabled by default in iOS 9 and the iPhone 6S/6S Plus. It can be switched off, but the controls are so buried away in the settings that some people may end up unwittingly using the service to the detriment of their mobile data package.
Accessing the controls for Wi-Fi Assist requires going into the Mobile Data menu in the settings for iOS 9, and scrolling down through the various options until reaching the button to toggle the feature on or off.
The recently released iOS 9 came with a host of tweaks and features, including improved battery life, a smarter version of Siri, shored-up security and better photo searching.
Apple then pushed out iOS 9.0.1 to squash several bugs in the software that came to light when the initial version went live.
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