How does oppoa9 turn off the advertisement promoted by 2345 Weather King?

Advertising pop-ups on mobile phones are usually caused by downloading software with malicious plug-ins, or the phone is poisoned. If this situation occurs, you can try the following operations:

1. Check whether the mobile phone has downloaded software before this situation occurs, and then uninstall the corresponding software.

2. Connect the mobile phone to the computer for anti-virus.

3. After backing up important data (contacts, multimedia files, etc.), then restore factory settings.

This answer applies to all OPPO models.