@CYH Hi, welcome to our community. For the unstable connection, you may follow this guide to troubleshoot: TP-Link LTE Router keeps disconnecting If it does not help, please share the detailed...

@Willem_Mu Hi, welcome to our community. Here are some additional suggestions for your reference: 1. Check USB Ports Try Different Ports: Test the adapter in all available USB ports. Sometimes,...

@Archeens Hi, welcome to our community. Here are some potential causes and solutions for your reference: Power Management Settings: Go to Device Manager (right-click Start and select Device Manager)....

@Asgkn5ubfnvdnmb Hi, welcome to our community. You may refer to the guide to troubleshoot if you feel the speed got slow: What should I do if Internet/download speed is slow when the device is...

@Ricolino74 Hi, welcome to our community. Here are some suggestions for your reference: 1. Reboot the router and log into Tether app to check. 2. Update Tether app to latest from Google Play or Apple...

@Surafeb7 Hi, thanks for posting question here. As VX420-G2v/VX420-G2h is a customized model is by some ISPs only, we can know much less than common DSL modem routers. Here are some common guides for...