Oppo mobile phone sends a message when changing the mobile phone card. How did it come from? How can it stop sending information?

This is caused by the mobile phone software being turned on for anti-theft. For example, 360 security guards have turned on the anti-theft card replacement tracking function, just turn it off.

Reasons and solutions for the failure of sending and receiving short messages: Reasons: wrong number in information center, number arrears, abnormal reception and forwarding in network base station, and mobile phone failure. Solution: 1 Correct the information center number. First, check whether the information center number of "SMS-SMS Settings-Information Center Number Settings" in the mobile phone is correct (compare it with similar local cards or consult the operator to confirm the information center number); 2. Information centers are stored in mobile phone cards. You can change a mobile phone card and restore the factory settings (Settings-System "More"-Restore the factory settings, please do not check "Clear completely") to eliminate the contrast; Determine whether it is a mobile phone card problem or a mobile phone problem; 3. Change the observation and comparison in different time periods; 4. Exclude the phone bill balance of the consulting mobile phone card; If the above methods fail to solve your problem, please take the purchase invoice, warranty card and mobile phone to the nearest OPPO customer service center for testing and handling.