Have you noticed your data usage going up on your iPhone? The new iOS9 system has a new feature that will sky-rocket your phone bill if you are not careful. Here's how to turn off the Wi-Fi feature on your phone.

This feature will use your mobile data when it thinks your wireless signal is too low. It's a cool feature, however, as WYRK points out, it can cost you a lot of your data. Here's how to turn it off:

 

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