Try, if you can, to power your router with another 12V/2A power supply. I had a similar problem with an old TP-Link router, the power supply seemed to provide (good?) 12v but the router would not...

@Forgttn if I'm not mistaken, the band 8 is in 900 MHz, reserved for 3G and can't be aggregated with band 20 for 4G LTE. When you select band 8 alone, you still in 3G, not 4G! Try to check all the...

Maybe it's just a Placebo effect, but I find that I get a better 4G+ reception when disposing my ARCHER MR-600 vertically. The router uses the beta firmware that allows the manual selection of 4G LTE...

What tp link device that support sim call? @Firdaousz Coming soon? The TL-MR6500v https://www.tp-link.com/en/home-networking/3g-4g-router/tl-mr6500v/ But only 2.4 GHz WiFi, no gigabit LAN ports, no...

@Centopino It's possible to change DNS setting in ARCHER MR-600. You have just to go to: Advanced tab --> Network --> LAN settings Provider DNS setting are not really accessible. But if you change...