Have you gone into the setting and disabled background app refresh? Also go into settings -> Cellular-> and uncheck any apps you don't use that would require data. I had that issue a year ago and didn't understand why all of a sudden I was consuming so much extra data. That worked for me.
I rarely use all my allocated 500mb of data a month unless I am on holiday. However this month by the 10th Feb is used it all. I increased my data allowance in 14th Feb and in 1 minute I’d used 500mb. What could be wrong.
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Have you gone into the setting and disabled background app refresh? Also go into settings -> Cellular-> and uncheck any apps you don't use that would require data. I had that issue a year ago and didn't understand why all of a sudden I was consuming so much extra data. That worked for me.
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Hi
Go to settings down to apps check each app that using data change to wifi only
On each app that doesn't need to use data just to wifi.
Go to books download ios 11 user guide it.s Free.
Cheers
Brian 🇬-1F1E7;
All of a sudden my phone has started using lots of data