After connecting your PC, you are unable to access the Internet？

1) When using the default 3G/4G mode, you must install a SIM card with valid tariff plans. After ensuring that the SIM card is properly loaded with valid tariff plans and is in a normal operating status, navigate to the "Web Management – Current Status" page to check the 4G status information. Verify that the following four items – signal strength, SIM card status, 4G service status, and 4G network type – are all displaying correctly. If any of these items appears abnormal, check whether the SIM card is properly inserted or whether its tariff plan is valid.

2) Check whether the computer's network interface card has been configured with a static IP address and whether the device is not on the same network segment; also verify whether no DNS address has been configured or whether an invalid DNS address has been set.

3) Is protective software installed on the computer and are features such as network interception or filtering enabled?