@Ame180 Hi, Thanks for your update. So you mean all the devices have the unstable issue now? Please try the troubleshooting suggestion we provided earlier and switch the LAN port before testing...

@artcza Hi, Please check if the SIM card works normally in devices like another 4G router or cell phone. Besides, if the router can get an Internet IP normally, you can also change the LAN DNS to...

@Edik13 Hi, Please refer to this thread to do the troubleshooting steps.

@Moon80 Hi, It would not affect, please do not worry.

@Marco_Varanda Hi, May I confirm where did you purchase the router? EX220 is a service provider customized model, so you can confirm the local support directly for more information about whether this...

@Konstantin2002 Hi, Thank you so much for taking the time to post the issue on the TP-Link community! To better assist you, I've created a support ticket via your registered email address, and...