Wechat scan code shows that the mobile network is unavailable. What's wrong with oppo phone?

Bad signal can be solved by the following measures: Take OPPOReno6 series and ColorOS 1 1 as examples: 1. If you wear a metal or plastic gold-plated protective case, it will shield the mobile phone signal, resulting in the interruption of receiving and sending signals. It is recommended to use the original protective case; 2. If the mobile phone is used in a special area of the network, it may lead to the interruption of signal reception or transmission, resulting in weak signal. It is suggested to use mobile phones in areas with relatively stable network environment; The network is quite special in areas such as 1. There are many people in bus stations, bus stations, classrooms and stadiums. 2. There are few network resources in basements, underground garages, elevators and high floors. 3. Cars, trains and high-speed trains move faster and frequently switch network base stations.

3. If the hardware of SIM card is damaged, it may also lead to abnormal signal. It is recommended to replace the SIM card and try again. Comparison method of whether the SIM card is abnormal: You can change the SIM card to other mobile phones for comparison. If there is a problem with the SIM card on other mobile phones, it means that the SIM card is abnormal and needs to be replaced.

4. Please compare other mobile phones (the same operator's 4G network) in the same place to see if there is any abnormality. If yes, the network of an operator is temporarily abnormal, and it is recommended to feedback to the local operator. 5. If the version of the mobile phone system is low, the network compatibility may be abnormal, and it is recommended to upgrade the latest system; If the problem cannot be solved through the above steps, it is recommended that you take the mobile phone purchase voucher to the local OPPO customer service center for testing and processing.

This answer applies to all OPPO models.