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. If the network access point is misconfigured, resulting in slow Internet access, you can enter "Settings >"; (mobile network) SIM card and traffic management >: select SIM card > access point name, and click ":"in the upper right corner to try to reset the access point.
3. If the data module of the SIM card is damaged or the SIM card is in arrears, resulting in slow Internet access, please contact the SIM card operator for handling.
4. If you are in a special area (bus station, high-speed railway station, basement, elevator), the cell phone signal will be affected. I suggest you leave such an area for a distance and try again.
5. It is recommended to use the original protective case of mobile phone instead of metal or gold-plated protective case.
6. Try to turn on the flight mode and then turn it off, search the network again, and upgrade the mobile phone version to the latest.
If the above methods still can't solve your problem, it is recommended that you bring your mobile phone and purchase certificate to the nearest official OPPO service center for testing by professional engineers.