Oppo mobile phone information and contacts can't be opened. Oppo opens the SMS, and the contact flashes back and forth.

Hello, in this case of your mobile phone, I suggest you go to official website to download the firmware package, and then brush the system for your mobile phone to see if it can be improved.

Operating Steps: Back up the data first, then download the firmware package, copy it to the root directory stored in the mobile phone, turn it off, press and hold the power button and the volume down button to enter the engineering mode, clear the data and cache, manually select the installation file, and restart the mobile phone.

If official website doesn't have a brush machine package, it is recommended to go to the local customer service center to brush the machine. Address of National Customer Service Center: /service/network

If you have any other questions, you can enter the OPPO enterprise platform to ask the customer service!