I want to set the top of the mobile phone to display the name of the operator, but I can't find that the mobile phone is oppo r 15x in the settings. The mobile phone of OPPO R 15x cannot display the name of the communication operator, because the mobile phone of OPPO R 15x is the system version of ColorOS 5.2, and the display of the name of the communication operator has been cancelled in the OPPO mobile phone of ColorOS 5.0 and above.