To resolve this issue, try the following steps:

1. Restart your phone.


2. Make sure your device is connected to a strong network.


3. Check your device's Wi-Fi settings.


4. Reset your phone's network settings.


5. Check if your device is out of storage.


6. Try switching your network band.


7. Update the firmware and software version.


8. Replace the SIM card.


9. Contact Your Network Provider.