Troubleshooting external factors:
1, the data traffic packet will accelerate after reaching the upper limit, which will slow down the Internet access. It is recommended that you open the traffic packet according to the actual situation.
2. It is recommended to use the original protective case of mobile phone instead of metal or gold-plated protective case.
3. If you are in a special area (bus stop, high-speed railway station, basement, elevator) or the data network server is overloaded (school dormitory, super-large business circle, etc.). ), it may also cause slow data network speed. I suggest you leave such an area for a distance and try again.
Check phone settings:
1. It is recommended that you check whether a third-party security software model is installed to control the network speed.
2. If you connect to VPN and use virtual private network, the network speed may be affected. It is recommended that you close the VPN connection and try.
Check the change of machine and card:
It is recommended that you change your phone and card to test whether it is affected by factors such as SIM card damage or package restrictions. If the SIM card of the original mobile phone is normal, I suggest you change your mobile phone and use the same SIM card:
(1) If you switch to another mobile phone, the Internet will be slow, which may be because the network in your area is abnormal, or the application and function are abnormal.
(2) If surfing the Internet with other mobile phones is normal, I suggest you try to clean up the application cache of your mobile phone or download and reinstall third-party software.
If the above methods still fail to solve the problem, it is recommended that you bring your mobile phone and purchase certificate to the local OPPO official authorized service experience center for testing and handling.