Dual_sim_Profile_sw on EC600U-CE

Technical Subjects Open Solution
1

I’m working on dual SIM profile switching on the EC600U-CE. In my case, the eSIM is working fine I’m able to publish data using it. However, when the eSIM’s CSQ value becomes invalid, I switch to the physical SIM using the AT+QDSIM=1 command. After switching, I encounter the errors shown in the attached log.

Please note that my hardware supports both eSIM and physical SIM.

Attempting QDSIM = 1 switch to physical SIM.
Switched to SIM slot 1 (0=eSIM USIM0, 1=Physical USIM1)
Raw rxBuffer for AT+QDSTYPE=0
AT+QDSTYPE=0
OK

AT+QDSIMCFG="dsss"T+QDSIMCFG= dsss:
+QDSIMCFG: “dsss”,1

OK

AT+QDSIMCFG=“dsss”,1QDSIMCFG= dsss,1:
OK

AT+CFUN=1,1r for AT+CFUN=1,1:
OK

Restarting EC600U.

AT+QDSIMCFG="dsss"T+QDSIMCFG= dsss:
+QDSIMCFG: “dsss”,1

OK

AT+QDSIM?fer for AT+QDSIM?:
+QDSIM: 1

OK

AT+QDSIM=1 for QDSIM:
OK

AT+CREG=1 for AT+CREG=1:
OK

AT+CREG? for AT+CREG?:
+CREG: 1,2

OK

AT+CREG? not registered (attempt 1).
AT+CREG?ffer for AT+CREG?:
+CREG: 1,2

OK

AT+CREG? not registered (attempt 2).
AT+CREG?ffer for AT+CREG?:
+CREG: 1,2

OK

2

pls run the AT command

AT+QENG=“servingcell”

3

(post deleted by author)

4

this is response = +QENG: “servingcell”,“LIMSRV”,“LTE”,“TDD”,04,223C0A2960,104,1,3FDE-7,10-8,0,4

5

LIMSRV indicates that the UE’s network registration has been rejected. Please check the validity of the SIM card.