@Kathir To locate this issue and try to fix it, we would like to follow up on your case via email. Please check your inbox and provide the information that we need.

@Suvajit Hi, you can install the beta firmware we provided on this thread to manually select the band, then confirm if the speed is better: https://community.tp-link.com/en/home/forum/topic/241534

@Manash When you chose band 40, did it show disconnect on the Status page? Can we have the screenshot? Any other details would be highly appreciated.

@RSBasera When you chose band 40, did it show disconnect on the Status page? Can we have the screenshot? Did you also try Jio and Airtel Sim card?

@JemyBoy I found you have a support ticket opened previously about the speed issue, which is TKID210302822, you can continue discussing the issue with the support engineers, I think they will be able...

@davidbrok1 I'm afraid not. The Onemesh routers cannot support to build a mesh network via an Ethernet/wired connection. We currently only have Deco support Ethernet backhaul. For more questions...