Good Day,

I recently purchased an Archer NX200, but none of the Iranian mobile carrier SIM cards are getting a signal on this modem. Other TP-Link routers, like the MR6400, work without any issues.

I tried manual network search, band selection, and forcing 4G, but none of these methods worked.

I also checked the system log and noticed that the SIM registers on the network briefly, then it shows as unplugged and plugged in again. This cycle repeats several times and eventually the modem stops searching.

Could anyone please help me resolve this issue?