How does Telecom 4G check the traffic without delay?

If the mobile phone uses mobile data to surf the Internet slowly, please solve it as follows:

1. The phone is turned off and restarted.

2. Clear the history and cache of mobile phone surfing: Apply-surf the Internet-click the five-pointed star icon on the screen-History-Menu button-Clear the history.

3. This situation may be caused by a problem with the Internet application, so it is recommended to reset the browser settings. Operation: Applications-Internet-Menu Keys-Settings-Content Settings-Reset Settings.

4. If the problem cannot be solved after the above operation, it is recommended that you try to replace another SIM/USIM card.