@Holchu Hi，thank you very much for the feedback. Do you mean Tether App cannot detect your TP-Link device in the “Device” Page? If so, please refer to the instruction below to troubleshoot:...

@Rdeeps Hi， thank you very much for the feedback. Are you still using the original power adapter? please check the specification of the power adapter. The MR600 V2 needs power supply with 12V 1.5A....

@yatesk Hi，do you have the same issue when using the original LTE antennas? If the signal and speed changes a lot, please pay attention to the network type and band displayed on Advanced->Status...

@ukko12 Hi, thank you very much for the feedback. May I know the Carrier name of your SIM card? and how often usually does the problem happen? Besides, please check if there is any changes on the...

@LeeCC Hi, thank you very much for the feedback. Sorry for that the MR6400 V4 doesn't support dvrdyndns, it is recommended to use DynDNS or No-IP DNS if necessary. We will also record your feedback.

@Akkeyzetsu Hi, please make sure the LTE antennas are installed properly, if still 0% signal strength, please try to move the device into another location such as near a window to see if the LTE...