1. If you are using a home network, it is recommended to connect to other wifi or personal hotspots of your mobile phone for testing and troubleshooting:
1. If connecting other WiFi is normal.
(1) Please stay away from the router;
(2) Please check whether the broadband account has expired, restart the router, restart the mobile phone and try again;
(3) If the router has a black-and-white list, you need to check whether the mac address of the mobile phone is added to the router. If the black-and-white list is not set on the router, please turn off the router and restart it.
2. If you connect other WiFi, you can't surf the Internet.
(1) Please reopen the WLAN switch connection attempt;
(2) It is recommended to search and restore the network settings in the settings and restore them according to the screen prompts. (Note: This operation will delete WLAN and Bluetooth connection records).
Second, if you use the public network:
1. Try to use it in places with little traffic, and make sure that the hotspot can be used normally.
2. Before surfing the Internet, please confirm whether you need to log in to the website through a browser to register.
3. If individual applications cannot access the Internet:
Please open the settings, enter traffic management in the search box above, click to enter the traffic management page, and click Application Networking to see if individual applications check WLAN permissions. It is recommended to check the WLAN permissions of all applications that need to be used.
If the above methods fail to solve the problem, it is recommended to back up the data (WeChat /QQ and other applications need to be backed up separately) and bring the purchase voucher to Huawei customer service center for testing.