Modem RM530N-GL AT command Network scan only work one time

IoT Modules 5G Module
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1

I am Using RM530N-GL for 4G and 5G network when I am Scan the network around me using AT command of "AT+ QSCAN =3,1 its work first time but I send it again it not work only give ok not give network info.
Please look below log and give solution.

my modem and send command example is below :
/* Use ATI to get module information of Manufacturer ID, Device module and Firmware version */
[2025-11-27 10:42:41:702_S:] ATI
[2025-11-27 10:42:41:718_R:] ATI

[2025-11-27 10:42:41:718_R:] Quectel
[2025-11-27 10:42:41:718_R:] RM530N-GL
[2025-11-27 10:42:41:718_R:] Revision: RM530NGLAAR05A01M4G

[2025-11-27 10:42:41:718_R:] OK

/* Use AT+GSN to query the IMEI of module */
[2025-11-27 10:42:41:733_S:] AT+GSN
[2025-11-27 10:42:41:749_R:] AT+GSN

[2025-11-27 10:42:41:764_R:] 867978050016566

[2025-11-27 10:42:41:764_R:] OK
[2025-11-27 10:42:41:764_S:] ATI
[2025-11-27 10:42:41:780_R:] ATI

[2025-11-27 10:42:41:780_R:] Quectel
[2025-11-27 10:42:41:780_R:] RM530N-GL
[2025-11-27 10:42:41:780_R:] Revision: RM530NGLAAR05A01M4G

[2025-11-27 10:42:41:780_R:] OK
[2025-11-27 10:42:41:796_S:] AT+QURCCFG=“URCPORT”,“usbat”
[2025-11-27 10:42:41:811_R:] AT+QURCCFG=“URCPORT”,“usbat”

[2025-11-27 10:42:41:811_R:] OK

/* Use AT+CPIN? to query the SIM card status : SIM card inserted or not, locked or unlocked */
[2025-11-27 10:42:41:827_S:] AT+CPIN?
[2025-11-27 10:42:41:843_R:] AT+CPIN?

[2025-11-27 10:42:41:853_R:] +CME ERROR: SIM not inserted

/* Make sure SIM card is unlocked */

[2025-11-27 10:42:42:275_R:] +CPIN: NOT INSERTED
[2025-11-27 10:42:45:019_S:] AT+QSCAN =3,1
[2025-11-27 10:42:45:035_R:] AT+QSCAN =3,1

[2025-11-27 10:43:30:591_R:] +QSCAN: “LTE”,404,11,3601,486,-111,-19,13,15,6E0230C,CDE9,50,8
[2025-11-27 10:43:30:591_R:] +QSCAN: “LTE”,404,10,39150,455,-92,-11,32,23,9C8F80D,936,100,40
[2025-11-27 10:43:30:591_R:] +QSCAN: “LTE”,404,10,39294,453,-97,-9,27,25,9C8F815,936,50,40
[2025-11-27 10:43:30:591_R:] +QSCAN: “NR5G”,404,10,629952,723,-86,-11,19,1,35A473D38,936,273,78,248,12,-
[2025-11-27 10:43:30:591_R:] +QSCAN: “NR5G”,405,872,634080,530,-93,-11,28,1,1054BC000,2C,273,78,36,2,-

[2025-11-27 10:43:30:591_R:] OK
[2025-11-27 10:43:39:185_S:] AT+QSCAN =3,1
[2025-11-27 10:43:39:200_R:] AT+QSCAN =3,1

[2025-11-27 10:43:40:263_R:] OK
[2025-11-27 10:43:44:481_S:] AT+QSCAN =3,1
[2025-11-27 10:43:44:497_R:] AT+QSCAN =3,1

[2025-11-27 10:43:45:559_R:] OK
[2025-11-27 10:43:47:059_S:] AT+QSCAN =3,1
[2025-11-27 10:43:47:075_R:] AT+QSCAN =3,1

[2025-11-27 10:43:48:122_R:] OK
[2025-11-27 10:43:49:731_S:] AT+QSCAN =3,1
[2025-11-27 10:43:49:746_R:] AT+QSCAN =3,1

[2025-11-27 10:43:50:809_R:] OK
[2025-11-27 10:43:52:637_S:] AT+QSCAN =3,1
[2025-11-27 10:43:52:637_R:] AT+QSCAN =3,1

[2025-11-27 10:43:53:699_R:] OK
[2025-11-27 10:43:54:871_S:] AT+QSCAN =3,1
[2025-11-27 10:43:54:871_R:] AT+QSCAN =3,1

[2025-11-27 10:43:55:934_R:] OK
[2025-11-27 10:43:57:543_S:] AT+QSCAN =3,1
[2025-11-27 10:43:57:558_R:] AT+QSCAN =3,1

[2025-11-27 10:43:58:605_R:] OK
[2025-11-27 10:43:59:386_S:] AT+QSCAN =3,1
[2025-11-27 10:43:59:402_R:] AT+QSCAN =3,1

[2025-11-27 10:44:00:449_R:] OK
[2025-11-27 10:44:02:042_S:] AT+QSCAN =3,1
[2025-11-27 10:44:02:058_R:] AT+QSCAN =3,1

[2025-11-27 10:44:03:105_R:] OK
[2025-11-27 10:44:03:433_S:] AT+QSCAN =3,1
[2025-11-27 10:44:03:433_R:] AT+QSCAN =3,1
[2025-11-27 10:44:03:792_S:] AT+QSCAN =3,1

[2025-11-27 10:44:04:495_R:] OK

2

Dear @Vinod_Malik
Did it occur everytime? 100% fail rate?
Do you check with other tool? like QCOM？

3

It occur every time only work if I disconnect device ad plug again then work for first time send at command only after that same issue.

I test in QCOM also it not work below is result :
[2025-11-28_11:19:28:315]AT+QSCAN =3,1

[2025-11-28_11:20:14:562]+QSCAN: “LTE”,404,11,3601,268,-101,-17,23,17,6DFEB0B,CDE9,50,8
[2025-11-28_11:20:14:562]+QSCAN: “LTE”,404,10,39294,453,-93,-14,31,20,9C8F815,936,50,40
[2025-11-28_11:20:14:562]+QSCAN: “LTE”,404,10,39150,453,-95,-9,29,21,9C8F80B,936,100,40
[2025-11-28_11:20:14:562]+QSCAN: “NR5G”,404,10,629952,723,-85,-11,20,1,35A473D38,936,273,78,248,12,-
[2025-11-28_11:20:14:578]+QSCAN: “NR5G”,405,872,634080,530,-92,-11,29,1,1054BC000,2C,273,78,36,2,-
[2025-11-28_11:20:14:578]
[2025-11-28_11:20:14:578]OK
[2025-11-28_11:20:25:234]AT+QSCAN =3,1

[2025-11-28_11:20:26:312]OK
[2025-11-28_11:20:28:030]AT+QSCAN =3,1

[2025-11-28_11:20:29:108]OK
[2025-11-28_11:20:30:514]AT+QSCAN =3,1

[2025-11-28_11:20:31:592]OK
[2025-11-28_11:20:33:202]AT+QSCAN =3,1

[2025-11-28_11:20:34:280]OK
[2025-11-28_11:20:35:748]AT+QSCAN =3,1

[2025-11-28_11:20:36:826]OK
[2025-11-28_11:20:38:139]AT+QSCAN =3,1

[2025-11-28_11:20:39:201]OK
[2025-11-28_11:20:40:186]AT+QSCAN =3,1

[2025-11-28_11:20:41:264]OK
[2025-11-28_11:20:42:482]AT+QSCAN =3,1

[2025-11-28_11:20:43:560]OK
[2025-11-28_11:20:45:123]AT+QSCAN =3,1

[2025-11-28_11:20:46:201]OK

4

My current firmware version is :
[2025-12-02 10:12:51:018_S:] AT+QGMR
[2025-12-02 10:12:51:018_R:] AT+QGMR

[2025-12-02 10:12:51:033_R:] RM530NGLAAR05A01M4G_01.201.01.201

[2025-12-02 10:12:51:033_R:] OK

5

Dear @Vinod_Malik
This AT commands need time to report, why did you execute frequently？

6

We need in some case in our application find which tower is best for working and which company service good so we select accordingly. It worked fine from last 1 year but these days not working spicily in 5G case in 4G/LTE it working every time fine. Can you provide the latest firmware may be work fine. My current version is RM530NGLAAR05A01M4G_01.201.01.201.

7

Dear @Vinod_Malik
Currently, your firmware is the latest one.

8

ok thanks for reply.
For LTE AT + QSCAN = 1,1 is working every time.
for LTE AT + QSCAN = 2,1 in not working have any suggestion why it happened.
If I do not execute frequently try after wait of 1 hour result is same.
please look out the problem.

9

Dear @Vinod_Malik
For 2, it is Search only for NR5G cells.

image
image1069×316 18.7 KB

10

I know sir I want to say that only 5G network scan is creating issue LTE 4G working every time good. Need to solution for NR5G Scan.

11

Dear @Vinod_Malik
Do you insert SIM card in device? For this command, it is not recommended to test with SIM card.

12

I am testing without sim.

13

Dear @Vinod_Malik
It is strange, for 405,872, I didn’t found this in network.
It seems it is not stable. Or operator had changed some logic.
It is recommended to confirm the 5G network.

14

Hello, I am having the same issue, where 5g qscan works only once in a while, does not work on continuous scans, and only returns OK. I am using the qscan for a monitoring exercise and would appreciate it, if it could behave the way the LTE QSCAN works, consistently returning results. Is there a way to fix this behavior?

15

Dear @anon_123
Please share your current firmware.
Did you test without SIM card?