Why can't Redmi Unicom 1s automatically standardize traffic?

Find the "security center" that opens Xiaomi's mobile phone, and you can see that there is a "network assistant" icon inside, click to enter;

Click "Traffic Correction", select the operator and attribution of your mobile phone card among the mobile phone operators, and then select "Finish";

Click the SMS template update, and after the update is completed, turn on the "automatic correction" switch;

Finally, click the "Check with Operator" button and confirm! Everything is done, so that the mobile phone will automatically check your traffic from the operator every day, which is much more accurate than the mobile phone itself.