You can modify the operator name in the oppo mobile phone settings. Here, taking oppo r9 as an example, the specific steps are as follows:

1. Click Open Settings on the phone desktop.

2. Click Dual Card and Mobile Network on the Settings page.

3. Click the operator that needs to be modified (take China Mobile as an example here), and then open it.

4. Click the SIM card name option to enter the next step.

5. You can modify the name of the SIM card in the pop-up window.

6. Fill in your favorite name in the input box, and then click Save.

7. The operator name has been successfully modified.