Vivo X9 How to detect the background steal flow application? Vivo X9 detect the use of the background of the stolen traffic method

1 Open the phone with the "I housekeeper" application, open and click the "Flow Monitoring" option. (pictured below)

2 then select "Speed Details", you can see the network is now connected to the application of the speed of the Internet connection, if there is clearly not open, but connected to the net and network connection speed is very fast, it must be in the background to steal the flow of the application, at the same time can be combined with the (pictured below)

3 Flow Ranking Open method is the previous interface click "Flow Ranking", you can see. (pictured below)