@Deniel Just to confirm, is the issue that the internet connection not stable on the MR600, or there is no internet at all when you manually select band 40? Can you confirm?

@Anshuman_5 This seems you can get the internet access when you choose the default profile, am I right? If that is the case, may I know the reason why you create the profile manually?

@Sherif_Marak480 Is it MR200? Please refer to this article to troubleshoot: https://community.tp-link.com/en/home/forum/topic/261882

@ranjbar If you have already tried all the suggestions listed on this thread, but the router still cannot detect the SIM card, you need to contact the local support to be advised on the following...

@Somersetboy May I know the hardware version of the M7350? Is it V5 or V6.20 or the older version? If it is V5 or V6.20, you can login to the modem web GUI to change the wireless security settings,...

@Hildimar Nope, I mean configuring a static IP address manually on the security camera, not on the router. Let's say, if the router LAN IP address is 192.168.0.1, and all the devices in the network...