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Re:No internet connection
Good day.
Please refer to the following suggestions；
- please reset the router by holding the reset pinhole for 10s first;
- make sure the 3/4g LTE dongle is working properly;
- log into the router to check the internet status;
---if there is no IP address, please manually update the APN settings;
--If there is an IP address, please manually change the DNS server to be 8.8.8.8/8.8.4.4;
4. please always make sure the firmware is up to date:
https://www.tp-link.com/en/support/download/tl-mr3420/#Firmware
Thank you!