Oppo mobile phone can't receive SMS. How to open it and how to deal with it?

When the OPPO mobile phone is registered, the verification code can't receive the short message, which is caused by the occasional fluctuation of the mobile network signal of the OPPO mobile phone. We can try to solve the problem in the following ways: 1. Turn off the OPPO phone, then wait for the restart, and check whether you can receive the SMS verification code after normal startup. Second, change other mobile phone numbers that normally receive SMS to see if you can receive SMS with verification code. Third, upgrade the OPPO mobile phone system, wait for the system upgrade to be completed, and check whether the SMS is received normally. 1. Take OPPOR 15 as an example, find the "Settings" option in the standby interface of the mobile phone, and click Open to enter the next step. 2. On the setting page, find the option of "System Update" and click Open to enter the next step. 3. On the system update page, OPPO mobile phone automatically retrieves the version of the mobile phone system in the server. If a new version of the mobile phone system is released, the mobile phone will automatically download and install the latest version. 4. If the above methods can't solve the problem, you can take your mobile phone and warranty card to the official repair center of OPPO mobile phone for inspection and maintenance.