@Timbo78 Do you mean 4G signal strength on the router and your mobile phone? or WiFi signal strength on the phone? Actually the 4G signal strength on your mobile phone is related to the phone itself,...

@Simone1978 Hi, I've replied you in another post, please have a check: https://community.tp-link.com/en/home/forum/topic/643474?replyId=1284000

@Simone1978 Hi, we are unable to control the device remotely since it has been offline from the cloud, if it doesn't recover automatically, I am afraid you will need to reboot it when you are there...

@CasaPatrizi Hi, when you login the web interface via 192.168.1.1 to make it online again, may I know if you are using local password to login, or use TP-Link ID to login? And if you restart the...

@JorgeSan Please make sure you are only connected to MR3420 router and also try tplinkwifi.net to login the web management page, if still doesn't work, please follow this guide to troubleshoot: What...

@CoaBoa Hi, is your MR600 working as 3G/4G Router mode with SIM card inserted? When the TL-R470T+ disconnected from MR600, please try connecting a client device to the MR600 via LAN or WiFi to see if...