9 
When a red cross and “Connection failed.” are shown between the Internet and the Router, it 
indicates that the internet connection is abnormal. 
 
Try the following solutions: 
−  Navigate to Internet Settings, and ensure that the Mobile Data and Data Roaming 
functions are enabled, and the mobile data option is set to 4G Preferred. 
−  Navigate to Internet Settings, and ensure that the dial-up settings parameters are 
identified by the router automatically. If not, check whether the SIM card is inserted 
properly, or refer to create an APN profile manually to access the internet to 
configure the router. 
−  If the SIM card is identified successfully but no internet access is available, your Sim 
card may have run out of money. Contact your ISP for more help. 
When a red cross and “Please unlock the SIM card” are shown between the Internet and the 
Router, it indicates that the SIM card is locked. Refer to Unlock the SIM card in the web UI.