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Why does my iphone use data every night at 00.00 when I am connected to wifi? This happens on days when I have not left the house, therefore I've been on wifi all day so it can't be data catch up. It is becoming very annoying as I am now running out of data. I have always had wifi assist turned off. Can someone please explain or direct me to where I can get an explaination. Thank you
Have you checked the cellular data usage (Settings App > Cellular > Cellular Data Usage) on the phone to see if the total data used on phone matches total data recorded by Telstra? If they don't match there could be a fault with the way Telstra is measuring your data usage.