Before 618, the iPhone actually had major system bugs and even "pocketed money". According to the news from iPhone maintenance professional @ maizijun I, recently, many users reported that the background traffic of IOS 15.5 would sneak away. According to the screening, the culprit behind this was the [time and place] function**
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According to the feedback from many netizens, the bug problem is very common this time. Many users have been "eating" more than a dozen GB of traffic. If they are not careful, they will cause excessive traffic and deduction of fees.
If there are users upgrading to IOS 15.5, you can call the [cellular network] - [system service] - [time and place] path to check whether you have encountered the problem of sneaking traffic**
The blogger revealed that at present, they are testing the feasibility of three methods. The first is to turn off the positioning, the second is to turn off the set networking permission, and the third is to give up the data brush 15.6b.
However, it is still under test. It can only be determined after detailed testing with the above methods. If you encounter similar situations, you can also try the more serious ones. However, the forced brushing method is not recommended for most users.