Why is the oppo mobile phone still unable to access the Internet when the mobile data is turned on?

If you are using an OPPO mobile phone (ColorOS system) and cannot access the Internet with data traffic, please confirm that one or all (multiple) applications cannot access the Internet:

Multiple/all applications can't access the Internet 1. Remove metal or gold-plated protective case to use traffic.

Electroplated, metal and magnetic protective shells can shield signals to a certain extent. I suggest you take off the protective shell and try it. ?

2. Confirm whether it is in a special area.

If you are in a crowded place or a bad signal, you may not be able to use the data network. It is recommended that you leave such an area and try again.

3. Test comparison between changing machine and changing card.

If the same SIM card is plugged into another mobile phone, you can surf the Internet through the data network, which may be because there is something wrong with the mobile phone. It is recommended that you bring your purchase voucher and mobile phone to the official service center of OPPO for testing and handling by professional engineers.

If the same SIM card is plugged into another mobile phone, but the data network can't be used, it may be caused by mobile phone traffic restriction or SIM card problems. It is recommended that you contact the SIM card operator for handling.

4, check the phone status

(1) Confirm whether the mobile data service of the SIM card is normal, such as whether the Internet access function is turned on, whether there is arrears, whether the mobile phone can recognize the SIM card normally, and whether the SIM card is in poor contact with the card slot.

(2) Confirm that the mobile data switch is turned on. You can draw a status bar from the top of the mobile phone to check whether the mobile data is turned on; If the SIM card is not a local card, you can set it >; SIM card and traffic management (mobile network) >: Select SIM card > Enable data roaming.

(3) Check whether the traffic packet limit is set. You can set it in "settings > SIM card and traffic management (mobile network) >: traffic management > traffic limit" to see if traffic limit is set.

(4) If using 5G, turn off 5G and try, and enter "Settings >"; SIM card and traffic management (mobile network) >: Select the SIM card to be used > Enable 5G "off switch.

(5) Confirm whether the current-saving switch is turned on, and you can enter "Settings >"; SIM card and traffic management (mobile network) >: traffic management > traffic saving ",try to turn off the switch.

(6) enter "Settings >; System settings > date and time > automatic time setting turns on the automatic time setting switch.

(7) If the mobile phone is connected to a private (VPN) network, it is recommended that you turn off the private network.

5. Reset APN access point.

Go to settings > SIM card and traffic management (mobile network) >: select SIM card > access point name > click "reset access point" in the upper right corner.

A single/partial application cannot use traffic to surf the Internet. 1. Check whether the software is prohibited from accessing the Internet.

You can go to Settings > (Mobile Network) SIM Card and Traffic Management >: Traffic Management > Application Networking Management, and click the corresponding application to view the network permission settings.

There are four options for this setting:

WLAN and mobile data: Applications can use mobile data and WLAN networks;

WLAN: Applications can use WLAN network, but cannot use mobile data;

Mobile data: applications can use mobile data, but not WLAN networks;

Disable network: Mobile data and WLAN networks are not allowed for this application.

2. Confirm whether other mobile phones can use the software.

If other mobile phones can't access the Internet normally by using this software, it can be confirmed that it is a problem of the software itself, and it is suggested that you contact the customer service of this software for feedback.

3. Uninstall and reinstall the application

After uninstalling and reloading the application that can't surf the Internet normally, restart the mobile phone to confirm whether it is restored (uninstalling the software will cause data loss, so it is recommended to be cautious). If the mobile phone is installed with three-party security, network, accelerator and other applications, it is recommended to close or uninstall the attempt.

If the above methods can't solve your problem, I suggest you back up your mobile phone data, take your mobile phone and purchase certificate to the official service center of OPPO, and let professional engineers detect and handle it.