@JimDaniels I am also having the same issue with my MR400 router and no one seems to have a solution. Their local support team, support.sg@tp-link.com, stopped respond to me after their first email....

@Ermu The MR400 got disconnected from the internet again. Today I returned, reboot the router and tried switching to 3G only but the router will not connect to internet. So I switched back to 4G and...

@Ermu Though I just bought it in Nov 2019, is this a very old router already? Because other than the user manual there's nothing for me to download on the page....

@Ermu The router replied "Your firmware is up to date" After I click Check for Upgrades.

@Kevin_Z Hi, will you help to checkout my log file too? Thanks. I saved it from the MR400 today. The MR400 internet connection was dropped at about 3am this morning.

Hello, I'm facing same issue on my MR400 as well. Connection to internet will drop like every two to three days. This morning, I had to reboot the router again and decided to come here for some...