Quick! Turn off this iOS 9 setting or risk data hell

I’ve been using iOS 9, Apple’s new mobile operating system, for a week, and it’s been great. Many users over on Twitter have been reporting that their data usage has escalated from the usual 1 GB a month to 3 GB and in some cases, even as much as 7 GB.

Some people online have reported having their mobile data allocations chewed through far faster than normal, and that can naturally come as a surprise – especially if you didn’t know the feature existed and you thought you were safely using Wi-Fi connectivity.

iPhone and 4G-enabled iPad users who’ve upgraded to iOS 9 could be in for a bit of a shock when it comes to their next phone bill.

Simply navigate to Settings Mobile Data then scroll to the bottom of the list and toggle Wifi Assist off.

So if this is likely to be a problem for you, simply turn “Wi-Fi Assist” off.

While on the surface this seems like a handy feature which makes sure you’re always connected to fast internet, it can also catch you out if you have limited mobile data limits.

Thankfully, Apple has included a quick an easy way to switch off the feature. When it’s activated, the iPhone will use cellular data-from your cell phone plan-to supplement the Wi-Fi if the router signal is weak.

Of course if you generally find yourself swimming in extra data allocation at the end of each month, or frequently find your phone clutches on to your home Wi-Fi well beyond the point of being useless as you walk down the street, this feature could be a great way to avoid buffering.