The problem with network registration. RG500Q-EA

AT+QENG=“servingcell”
+QENG: “servingcell”,“NOCONN”,“LTE”,“TDD”,413,12,4F1207,408,39990,41,5,5,AB2E,-99,-11,-68,14,15,10,-
OK

Why does this says NOCONN?
The modem receives data now. But serving cell says NOCONN. further more it doesn’t connect to CA

That’s normal for packet-mode sessions. What you don’t have is a circuit-switched connection. They are potentially available on 2G and 3G only.

Does the RG500Q-AE support LTE CA with B41 as the serving cell? I can’t find a spec with the CA combinations.

Does your provider support CA on B41 with the cell you’re camped on?

Hi, When I run AT+CREG? it returns following

AT+CREG?
+CREG: 0,3

OK

According to reference manual 3 means registration denied.

However, when I run AT+CEREG? it returns,

AT+CEREG?
+CEREG: 0,1

OK

Which means Registered Home network.

I don’t understand why. Any help to clarify is highly appreciated.

+CEREG is the command specifically for 4G/LTE, just as +C5GREG is for 5G/NR.

See 3GPP 27.007, section 7.2.