@Michalon Hi, you could consider setting up the parental control for this device: Time limit for 24 hours and use whitelist but did not put any key words; Thank you very much and wait for your reply.

@Whatdoyouwant Hi, for the Archer MR600, there is only one administrator that could log into the web interface at the same time. Thank you very much.

@nniieezzaamm Hi, if you change the internet mode to 4G only or 4G preferred, will you see the band selection option? Thank you very much.

@OwnStorm Hi, would changing the wireless channel on the MR600, like channel 11 for 2.4ghz, channel 48 for 5ghz improve the speed a little bit? Can I have a picture of the status page when it used...

@Baud21 Hi, did you mean all the 4G sim cards are not detected on the Archer MR600 and M7350, or the sim cards are all detected but no internet on the two routers? --I suppose it was the second one?...

@Russa Hi, was there any internet IPv4 address under the status page, or it is 0.0.0.0? --if possible, could you please send me a picture of the status page? Have you tried to manually create an APN...