It may be caused by incorrect router construction, network problems, and third-party software problems. You are advised to troubleshoot the problem in the following ways:
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1, if you use a home network, to check whether there are multiple routers cascaded together to use, you can separately connect the main router to see whether the Internet can be normal, if yes, you need to check whether the cascaded network is correctly built.
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2, if other mobile phones can access the Internet normally, it is recommended to restart the phone and try again. If other mobile phones can not access the Internet, you can check whether the wireless router network is normal.
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3. If a third-party VPN software is installed, the WLAN connection may be abnormal. Uninstall it.
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5, it is recommended to restart the router or disconnect other devices after trying to check the router Settings (wireless routers can limit the MAC address IP end of the access device, the number of allowed access devices, and the network speed).
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6. Try to restore factory Settings or restart the router.
When the router and network cable are connected but can not access the Internet, then it may be directly related to our Settings, we click the Microsoft button in the lower left corner of the computer, the pop-up interface, we click set;
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Pop-up interface, we click on the network and Internet;
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The pop-up interface, we click change adapter options;
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The interface pops up, we right-click Ethernet, and then click Properties;
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The pop-up interface, we double-click Internet protocol version 4;
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On the pop-up interface, we set the IP address and DNS address to be automatically obtained, and then click OK.