I am not getting proper replay of this command AT+CPSI? i am getting Error like "invalid command"

Technical Subjects Open Solution
1

i am working on `EC200U-CN AA and EC200U-CN AC so i tried means ran in both model using Qnavigator , i am getting same error .

2025-10-09 13:54:48:113_S:] AT+CEREG?
[2025-10-09 13:54:48:176_R:] AT+CEREG?
[2025-10-09 13:54:48:176_R:] +CEREG: 0,1

[2025-10-09 13:54:48:176_R:] OK
[2025-10-09 13:56:36:568_S:] AT+CGDCONT=1,“IP”,“airtelgprs.com”
[2025-10-09 13:56:36:627_R:] AT+CGDCONT=1,“IP”,“airtelgprs.com”
[2025-10-09 13:56:36:627_R:] OK
[2025-10-09 13:57:26:659_S:] AT+CCID
[2025-10-09 13:57:26:717_R:] AT+CCID
[2025-10-09 13:57:26:717_R:] +CCID: 8991000923340444400F

[2025-10-09 13:57:26:717_R:] OK
[2025-10-09 13:57:45:135_S:] AT+CREG?
[2025-10-09 13:57:45:200_R:] AT+CREG?
[2025-10-09 13:57:45:200_R:] +CREG: 0,1

[2025-10-09 13:57:45:200_R:] OK
[2025-10-09 13:57:53:293_S:] AT+CEREG?
[2025-10-09 13:57:53:349_R:] AT+CEREG?
[2025-10-09 13:57:53:349_R:] +CEREG: 0,1

[2025-10-09 13:57:53:349_R:] OK
[2025-10-09 13:58:08:666_S:] AT+CSQ
[2025-10-09 13:58:08:724_R:] AT+CSQ
[2025-10-09 13:58:08:724_R:] +CSQ: 17,99

[2025-10-09 13:58:08:724_R:] OK
[2025-10-09 13:58:16:266_S:] AT+CGATT?
[2025-10-09 13:58:16:325_R:] AT+CGATT?
[2025-10-09 13:58:16:325_R:] +CGATT: 1

[2025-10-09 13:58:16:325_R:] OK
[2025-10-09 13:58:23:908_S:] AT+CPSI?
[2025-10-09 13:58:23:966_R:] AT+CPSI?
[2025-10-09 13:58:23:966_R:] +CME ERROR: invalid command line
[2025-10-09 14:01:34:618_S:] AT+CPSI?
[2025-10-09 14:01:34:683_R:] AT+CPSI?
[2025-10-09 14:01:34:683_R:] +CME ERROR: invalid command line
[2025-10-09 14:01:43:384_S:] AT+CPIN?
[2025-10-09 14:01:43:449_R:] AT+CPIN?
[2025-10-09 14:01:43:449_R:] +CPIN: READY

[2025-10-09 14:01:43:449_R:] OK
[2025-10-09 14:01:45:720_S:] AT+CSQ
[2025-10-09 14:01:45:785_R:] AT+CSQ
[2025-10-09 14:01:45:785_R:] +CSQ: 17,99

[2025-10-09 14:01:45:785_R:] OK
[2025-10-09 14:01:51:482_S:] AT+CSQ
[2025-10-09 14:01:51:547_R:] AT+CSQ
[2025-10-09 14:01:51:547_R:] +CSQ: 18,99

[2025-10-09 14:01:51:547_R:] OK
[2025-10-09 14:01:53:665_S:] AT+CGATT?
[2025-10-09 14:01:53:729_R:] AT+CGATT?
[2025-10-09 14:01:53:729_R:] +CGATT: 1

[2025-10-09 14:01:53:729_R:] OK
[2025-10-09 14:01:56:149_S:] AT+CPSI?
[2025-10-09 14:01:56:214_R:] AT+CPSI?
[2025-10-09 14:01:56:214_R:] +CME ERROR: invalid command line
[2025-10-09 14:01:57:794_S:] AT+CPSI?
[2025-10-09 14:01:57:859_R:] AT+CPSI?
[2025-10-09 14:01:57:859_R:] +CME ERROR: invalid command line
[2025-10-09 14:01:58:744_S:] AT+CPSI?
[2025-10-09 14:01:58:809_R:] AT+CPSI?
[2025-10-09 14:01:58:809_R:] +CME ERROR: invalid command line

EC200U-CN AA :- EC200UCNAAR03A09M08
EC200U-CN AC :- EC200UCNAAR03A11M08

   anyone could give solution exactly what is the solution of problem?
2

pls run for Quectel

AT+QENG=“servingcell”

3

Thank you.
but i ran this command so i got this log

[2025-10-10 10:56:17:935_S:] AT
[2025-10-10 10:56:17:996_R:] AT
[2025-10-10 10:56:17:996_R:] OK
[2025-10-10 10:56:18:951_S:] AT+CPIN?
[2025-10-10 10:56:19:014_R:] AT+CPIN?
[2025-10-10 10:56:19:014_R:] +CPIN: READY

[2025-10-10 10:56:19:014_R:] OK
[2025-10-10 10:56:19:968_S:] AT+CSQ
[2025-10-10 10:56:20:031_R:] AT+CSQ
[2025-10-10 10:56:20:031_R:] +CSQ: 16,99

[2025-10-10 10:56:20:031_R:] OK
[2025-10-10 10:56:20:986_S:] AT+CREG?
[2025-10-10 10:56:21:048_R:] AT+CREG?
[2025-10-10 10:56:21:048_R:] +CREG: 0,1

[2025-10-10 10:56:21:048_R:] OK
[2025-10-10 10:56:22:021_S:] AT+CGATT?
[2025-10-10 10:56:22:080_R:] AT+CGATT?
[2025-10-10 10:56:22:080_R:] +CGATT: 1

[2025-10-10 10:56:22:080_R:] OK
[2025-10-10 10:56:23:045_S:] AT+QENG=“servingcell”
[2025-10-10 10:56:23:109_R:] AT+QENG=“servingcell”
[2025-10-10 10:56:23:109_R:] +CME ERROR: Operation not allowed
[2025-10-10 10:56:24:063_S:] AT+CPSI?
[2025-10-10 10:56:24:129_R:] AT+CPSI?
[2025-10-10 10:56:24:129_R:] +CME ERROR: invalid command line

4

Hi Trupti,

You can try

AT+QNWINFO
and
AT+QCSQ

5

AT+QENG=“servingcell”
Please pay attention to the quotation marks.