1. If you use data traffic, check whether the signal strength at your location is low, and try to adjust or move to a position with higher signal strength; Turn the phone on airplane mode, turn it off and try again.
2. If you use WiFi, check whether the device has abnormal phenomena in all WiFi environments. If no, delete the network or restart the phone to reconnect. At present, there are many devices working in the 2.4G band in the home scene, which may cause certain interference. If your router supports 5G band, you can connect to the 5G band to try.
3. If all network environments, regions, mobile phone network anomalies are very serious, it is recommended to change the mobile phone holding posture;
4. If the use of metal or too thick protective shell may affect the signal reception ability, you can remove the protective shell and try.