EC25-EUX No service

[kmyg]

Hello,

we have 3 devices with modems Quectel EC25-EUX.

Unfortunately we have problem with working at Windows 10 x64 (Newest).

After install drivers Quectel_LTE&5G_Windows_USB_Driver_V2.2.2 and V2.1 at “Mobile Networks” operator sometimes is detected but i always see “No Service”.

1. Module blinking all the time BLUE / 3 seconds.

2. I tried change SIM card and operator, add APN, go outside, reinstall etc.

3. Antenna connection is OK.

Maybe module is not supported at Poland, European frequency or need set it?

/* Start AT SYNC: Send AT every 500ms, if receive OK, SYNC success, if no OK return after sending AT 10 times, SYNC fail */
[2020-06-11 23:55:39:811_S:] AT
[2020-06-11 23:55:39:827_R:] AT

[2020-06-11 23:55:39:827_R:] OK

/* Use ATV1 to set the response format */
[2020-06-11 23:55:39:842_S:] ATV1
[2020-06-11 23:55:39:858_R:] ATV1

[2020-06-11 23:55:39:873_R:] OK

/* Use ATE1 to enable echo mode */
[2020-06-11 23:55:39:889_S:] ATE1
[2020-06-11 23:55:39:905_R:] ATE1

[2020-06-11 23:55:39:905_R:] OK

/* Use AT+CMEE=2 to enable result code and use verbose values */
[2020-06-11 23:55:39:936_S:] AT+CMEE=2
[2020-06-11 23:55:39:952_R:] AT+CMEE=2

[2020-06-11 23:55:39:952_R:] OK

/* Get the baudrate, if the value is 0 (auto baudrate), then it will be set to 115200 (fixed baudrate) to assure reliable communication and avoid any problems caused by undetermined baudrate between DCE and DTE, value of IPR should be saved with AT&W */
[2020-06-11 23:55:39:983_S:] AT+IPR?
[2020-06-11 23:55:39:998_R:] AT+IPR?

[2020-06-11 23:55:40:014_R:] +IPR: 115200

[2020-06-11 23:55:40:014_R:] OK

/* Use ATI to get module information of Manufacturer ID, Device module and Firmware version */
[2020-06-11 23:55:40:030_S:] ATI
[2020-06-11 23:55:40:045_R:] ATI

[2020-06-11 23:55:40:061_R:] Quectel
[2020-06-11 23:55:40:061_R:] EC25
[2020-06-11 23:55:40:061_R:] Revision: EC25EUXGAR08A02M1G

[2020-06-11 23:55:40:061_R:] OK

/* Use AT+GSN to query the IMEI of module */
[2020-06-11 23:55:40:077_S:] AT+GSN
[2020-06-11 23:55:40:092_R:] AT+GSN

[2020-06-11 23:55:40:108_R:] 862506040028808

[2020-06-11 23:55:40:108_R:] OK
[2020-06-11 23:55:40:108_S:] ATI
[2020-06-11 23:55:40:123_R:] ATI

[2020-06-11 23:55:40:123_R:] Quectel
[2020-06-11 23:55:40:123_R:] EC25
[2020-06-11 23:55:40:123_R:] Revision: EC25EUXGAR08A02M1G

[2020-06-11 23:55:40:123_R:] OK

/* Use AT+CPIN? to query the SIM card status : SIM card inserted or not, locked or unlocked */
[2020-06-11 23:55:40:155_S:] AT+CPIN?
[2020-06-11 23:55:40:170_R:] AT+CPIN?

[2020-06-11 23:55:40:186_R:] +CPIN: READY

[2020-06-11 23:55:40:186_R:] OK

/* Use AT+CIMI to query the IMSI of SIM card */
[2020-06-11 23:55:40:202_S:] AT+CIMI
[2020-06-11 23:55:40:217_R:] AT+CIMI

[2020-06-11 23:55:40:233_R:] 260032000129391

[2020-06-11 23:55:40:233_R:] OK

/* Use AT+QCCID to query ICCID number of SIM card */
[2020-06-11 23:55:40:248_S:] AT+QCCID
[2020-06-11 23:55:40:264_R:] AT+QCCID

[2020-06-11 23:55:40:264_R:] +QCCID: 8948031852001293918F

[2020-06-11 23:55:40:264_R:] OK

/* Use AT+CSQ to query current signal quality */
[2020-06-11 23:55:40:295_S:] AT+CSQ
[2020-06-11 23:55:40:311_R:] AT+CSQ

[2020-06-11 23:55:40:311_R:] +CSQ: 99,99

[2020-06-11 23:55:40:311_R:] OK

/* Use AT+CREG? /AT+CGREG? to query the network registration status. */
[2020-06-11 23:55:40:327_S:] AT+CREG?
[2020-06-11 23:55:40:342_R:] AT+CREG?

[2020-06-11 23:55:40:358_R:] +CREG: 0,0

[2020-06-11 23:55:40:358_R:] OK
[2020-06-11 23:55:40:373_S:] AT+CGREG?
[2020-06-11 23:55:40:373_R:] AT+CGREG?

[2020-06-11 23:55:40:373_R:] +CGREG: 0,0

[2020-06-11 23:55:40:373_R:] OK

/* Use AT+CREG? /AT+CGREG? to query the network registration status. */
[2020-06-11 23:55:41:420_S:] AT+CREG?
[2020-06-11 23:55:41:436_R:] AT+CREG?

[2020-06-11 23:55:41:436_R:] +CREG: 0,0

[2020-06-11 23:55:41:436_R:] OK
[2020-06-11 23:55:41:452_S:] AT+CGREG?
[2020-06-11 23:55:41:467_R:] AT+CGREG?

[2020-06-11 23:55:41:467_R:] +CGREG: 0,0

[2020-06-11 23:55:41:467_R:] OK

/* Use AT+CREG? /AT+CGREG? to query the network registration status. */
[2020-06-11 23:55:42:483_S:] AT+CREG?
[2020-06-11 23:55:42:498_R:] AT+CREG?

[2020-06-11 23:55:42:498_R:] +CREG: 0,0

[2020-06-11 23:55:42:498_R:] OK
[2020-06-11 23:55:42:514_S:] AT+CGREG?
[2020-06-11 23:55:42:530_R:] AT+CGREG?

[2020-06-11 23:55:42:530_R:] +CGREG: 0,0

[2020-06-11 23:55:42:530_R:] OK

/* Use AT+CREG? /AT+CGREG? to query the network registration status. */
[2020-06-11 23:55:43:545_S:] AT+CREG?
[2020-06-11 23:55:43:561_R:] AT+CREG?

[2020-06-11 23:55:43:561_R:] +CREG: 0,0

[2020-06-11 23:55:43:561_R:] OK
[2020-06-11 23:55:43:576_S:] AT+CGREG?
[2020-06-11 23:55:43:576_R:] AT+CGREG?

[2020-06-11 23:55:43:592_R:] +CGREG: 0,0

[2020-06-11 23:55:43:592_R:] OK

/* Use AT+CREG? /AT+CGREG? to query the network registration status. */
[2020-06-11 23:55:44:623_S:] AT+CREG?
[2020-06-11 23:55:44:654_R:] AT+CREG?

[2020-06-11 23:55:44:654_R:] +CREG: 0,0

[2020-06-11 23:55:44:654_R:] OK
[2020-06-11 23:55:44:654_S:] AT+CGREG?
[2020-06-11 23:55:44:670_R:] AT+CGREG?

[2020-06-11 23:55:44:670_R:] +CGREG: 0,0

[2020-06-11 23:55:44:670_R:] OK

/* Make sure the Antenna is connected and the network is normal */

More commands:

[2020-06-12 00:17:45:479_S:] AT+CSQ
[2020-06-12 00:17:45:495_R:] AT+CSQ

[2020-06-12 00:17:45:510_R:] +CSQ: 99,99

[2020-06-12 00:17:45:510_R:] OK
[2020-06-12 00:17:56:401_S:] AT+COPS?
[2020-06-12 00:17:56:416_R:] AT+COPS?

[2020-06-12 00:17:56:416_R:] +COPS: 0

[2020-06-12 00:17:56:416_R:] OK
[2020-06-12 00:18:07:900_S:] AT+QNWINFO
[2020-06-12 00:18:07:916_R:] AT+QNWINFO

[2020-06-12 00:18:07:916_R:] +QNWINFO: No Service

[2020-06-12 00:18:07:916_R:] OK
[2020-06-12 00:18:31:414_S:] AT+QCFG="BAND"
[2020-06-12 00:18:31:430_R:] AT+QCFG="BAND"

[2020-06-12 00:18:31:430_R:] +QCFG: "band",0x93,0x44,0x1

[2020-06-12 00:18:31:430_R:] OK
[2020-06-12 00:19:09:897_S:] AT+QCFG="NWSCANMODE"
[2020-06-12 00:19:09:912_R:] AT+QCFG="NWSCANMODE"

[2020-06-12 00:19:09:912_R:] +QCFG: "nwscanmode",3

[2020-06-12 00:19:09:912_R:] OK
[2020-06-12 00:19:25:661_S:] AT+CFUN?
[2020-06-12 00:19:25:677_R:] AT+CFUN?

[2020-06-12 00:19:25:693_R:] +CFUN: 1

[2020-06-12 00:19:25:693_R:] OK
[2020-06-12 00:19:32:489_S:] AT+CREG?
[2020-06-12 00:19:32:505_R:] AT+CREG?

[2020-06-12 00:19:32:521_R:] +CREG: 0,0

[2020-06-12 00:19:32:521_R:] OK
[2020-06-12 00:19:39:770_S:] AT+CEREG?
[2020-06-12 00:19:39:786_R:] AT+CEREG?

[2020-06-12 00:19:39:786_R:] +CEREG: 0,0

[2020-06-12 00:19:39:786_R:] OK
[2020-06-12 00:19:58:207_S:] AT+QENG="SERVINGCELL"
[2020-06-12 00:19:58:207_R:] AT+QENG="SERVINGCELL"

[2020-06-12 00:19:58:222_R:] +QENG: "servingcell","SEARCH"

[2020-06-12 00:19:58:222_R:] OK

[Kyson]

Dear Kmyg,
Thanks for your inquiry in Quectel forum.
Our EC25EUX module can support following bands:
LTE FDD: B1/B3/B7/B8/B20/B28A
LTE TDD: B38/B40/B41
WCDMA: B1/B8
GSM: B3/B8
and it should return the following value when you use AT+QCFG=“BAND” to check it. But it return the wrong value in your test log. Please double check when you have change any parameters setting. And please change the band setting if you want to test the module. Thanks!

[kmyg]

@kmyg

Quectel EC25-EUX

How to change it to correctly?
Can you write me command?
Actually i changed it to .0x93,0x0,0x1

[Kyson]

please use the following command. Thanks!
AT+QCFG=“BAND”,0,1a0080800c5,0

[kmyg]

Dear Kyson,
i can’t change to 0x0.
How to do it?

[2020-06-12 10:10:35:136_S:] AT+QCFG="band",0,1a0080800c5,0
[2020-06-12 10:10:35:152_R:] AT+QCFG="band",0,1a0080800c5,0

[2020-06-12 10:10:35:167_R:] OK
[2020-06-12 10:10:41:745_S:] AT+QCFG="band"
[2020-06-12 10:10:41:761_R:] AT+QCFG="band"

[2020-06-12 10:10:41:776_R:] +QCFG: "band",0x93,0x1a0080800c5,0x1

[2020-06-12 10:10:41:776_R:] OK

[Kyson]

Reboot the module and test again. If still have any issue, please provide your test AT log as the above. Thanks!

[kmyg]

Hi,
I rebooted module.
Command still can’t change 0x1 to 0x0.

[2020-06-12 11:02:28:627_S:] AT+QCFG="BAND",0,1a0080800c5,0
[2020-06-12 11:02:28:643_R:] AT+QCFG="BAND",0,1a0080800c5,0

[2020-06-12 11:02:28:659_R:] OK
[2020-06-12 11:02:34:257_S:] AT+QCFG="BAND"
[2020-06-12 11:02:34:273_R:] AT+QCFG="BAND"

[2020-06-12 11:02:34:273_R:] +QCFG: "band",0x93,0x1a0080800c5,0x1

[2020-06-12 11:02:34:273_R:] OK

AT COMMANDS:

/* Start AT SYNC: Send AT every 500ms, if receive OK, SYNC success, if no OK return after sending AT 10 times, SYNC fail */
[2020-06-12 10:50:43:502_S:] AT
[2020-06-12 10:50:43:502_R:] AT

[2020-06-12 10:50:43:502_R:] OK

/* Use ATV1 to set the response format */
[2020-06-12 10:50:43:533_S:] ATV1
[2020-06-12 10:50:43:533_R:] ATV1
[2020-06-12 10:50:43:533_R:] OK

/* Use ATE1 to enable echo mode */
[2020-06-12 10:50:43:549_S:] ATE1
[2020-06-12 10:50:43:549_R:] ATE1

[2020-06-12 10:50:43:549_R:] OK

/* Use AT+CMEE=2 to enable result code and use verbose values */
[2020-06-12 10:50:43:564_S:] AT+CMEE=2
[2020-06-12 10:50:43:564_R:] AT+CMEE=2

[2020-06-12 10:50:43:564_R:] OK

/* Get the baudrate, if the value is 0 (auto baudrate), then it will be set to 115200 (fixed baudrate) to assure reliable communication and avoid any problems caused by undetermined baudrate between DCE and DTE, value of IPR should be saved with AT&W */
[2020-06-12 10:50:43:580_S:] AT+IPR?
[2020-06-12 10:50:43:580_R:] AT+IPR?

[2020-06-12 10:50:43:580_R:] +IPR: 115200

[2020-06-12 10:50:43:580_R:] OK

/* Use ATI to get module information of Manufacturer ID, Device module and Firmware version */
[2020-06-12 10:50:43:596_S:] ATI
[2020-06-12 10:50:43:596_R:] ATI

[2020-06-12 10:50:43:596_R:] Quectel
[2020-06-12 10:50:43:596_R:] EC25
[2020-06-12 10:50:43:596_R:] Revision: EC25EUXGAR08A02M1G

[2020-06-12 10:50:43:596_R:] OK

/* Use AT+GSN to query the IMEI of module */
[2020-06-12 10:50:43:596_S:] AT+GSN
[2020-06-12 10:50:43:611_R:] AT+GSN

[2020-06-12 10:50:43:611_R:] 862506040028808

[2020-06-12 10:50:43:611_R:] OK
[2020-06-12 10:50:43:611_S:] ATI
[2020-06-12 10:50:43:627_R:] ATI

[2020-06-12 10:50:43:627_R:] Quectel
[2020-06-12 10:50:43:627_R:] EC25
[2020-06-12 10:50:43:627_R:] Revision: EC25EUXGAR08A02M1G

[2020-06-12 10:50:43:627_R:] OK

/* Use AT+CPIN? to query the SIM card status : SIM card inserted or not, locked or unlocked */
[2020-06-12 10:50:43:658_S:] AT+CPIN?
[2020-06-12 10:50:43:674_R:] AT+CPIN?

[2020-06-12 10:50:43:689_R:] +CPIN: READY

[2020-06-12 10:50:43:689_R:] OK

/* Use AT+CIMI to query the IMSI of SIM card */
[2020-06-12 10:50:43:705_S:] AT+CIMI
[2020-06-12 10:50:43:721_R:] AT+CIMI

[2020-06-12 10:50:43:721_R:] 260032000129391

[2020-06-12 10:50:43:721_R:] OK

/* Use AT+QCCID to query ICCID number of SIM card */
[2020-06-12 10:50:43:752_S:] AT+QCCID
[2020-06-12 10:50:43:752_R:] AT+QCCID

[2020-06-12 10:50:43:768_R:] +QCCID: 8948031852001293918F

[2020-06-12 10:50:43:768_R:] OK

/* Use AT+CSQ to query current signal quality */
[2020-06-12 10:50:43:783_S:] AT+CSQ
[2020-06-12 10:50:43:799_R:] AT+CSQ

[2020-06-12 10:50:43:799_R:] +CSQ: 99,99

[2020-06-12 10:50:43:799_R:] OK

/* Use AT+CREG? /AT+CGREG? to query the network registration status. */
[2020-06-12 10:50:43:814_S:] AT+CREG?
[2020-06-12 10:50:43:814_R:] AT+CREG?

[2020-06-12 10:50:43:830_R:] +CREG: 0,0

[2020-06-12 10:50:43:830_R:] OK
[2020-06-12 10:50:43:846_S:] AT+CGREG?
[2020-06-12 10:50:43:846_R:] AT+CGREG?

[2020-06-12 10:50:43:846_R:] +CGREG: 0,0

[2020-06-12 10:50:43:846_R:] OK

/* Use AT+CREG? /AT+CGREG? to query the network registration status. */
[2020-06-12 10:50:44:877_S:] AT+CREG?
[2020-06-12 10:50:44:892_R:] AT+CREG?

[2020-06-12 10:50:44:892_R:] +CREG: 0,0

[2020-06-12 10:50:44:892_R:] OK
[2020-06-12 10:50:44:908_S:] AT+CGREG?
[2020-06-12 10:50:44:924_R:] AT+CGREG?

[2020-06-12 10:50:44:924_R:] +CGREG: 0,0

[2020-06-12 10:50:44:924_R:] OK

/* Use AT+CREG? /AT+CGREG? to query the network registration status. */
[2020-06-12 10:50:45:939_S:] AT+CREG?
[2020-06-12 10:50:45:955_R:] AT+CREG?

[2020-06-12 10:50:45:955_R:] +CREG: 0,0

[2020-06-12 10:50:45:955_R:] OK
[2020-06-12 10:50:45:971_S:] AT+CGREG?
[2020-06-12 10:50:45:986_R:] AT+CGREG?

[2020-06-12 10:50:45:986_R:] +CGREG: 0,0

[2020-06-12 10:50:45:986_R:] OK

/* Use AT+CREG? /AT+CGREG? to query the network registration status. */
[2020-06-12 10:50:47:002_S:] AT+CREG?
[2020-06-12 10:50:47:017_R:] AT+CREG?

[2020-06-12 10:50:47:017_R:] +CREG: 0,0

[2020-06-12 10:50:47:017_R:] OK
[2020-06-12 10:50:47:033_S:] AT+CGREG?
[2020-06-12 10:50:47:033_R:] AT+CGREG?

[2020-06-12 10:50:47:033_R:] +CGREG: 0,0

[2020-06-12 10:50:47:033_R:] OK

/* Use AT+CREG? /AT+CGREG? to query the network registration status. */
[2020-06-12 10:50:48:064_S:] AT+CREG?
[2020-06-12 10:50:48:080_R:] AT+CREG?

[2020-06-12 10:50:48:080_R:] +CREG: 0,0

[2020-06-12 10:50:48:080_R:] OK
[2020-06-12 10:50:48:095_S:] AT+CGREG?
[2020-06-12 10:50:48:095_R:] AT+CGREG?

[2020-06-12 10:50:48:095_R:] +CGREG: 0,0

[2020-06-12 10:50:48:095_R:] OK

/* Make sure the Antenna is connected and the network is normal */ 

More commands:

[2020-06-12 10:54:05:132_S:] AT+CSQ
[2020-06-12 10:54:05:132_R:] AT+CSQ

[2020-06-12 10:54:05:147_R:] +CSQ: 99,99

[2020-06-12 10:54:05:147_R:] OK
[2020-06-12 10:54:17:022_S:] AT+COPS?
[2020-06-12 10:54:17:022_R:] AT+COPS?

[2020-06-12 10:54:17:022_R:] +COPS: 0

[2020-06-12 10:54:17:022_R:] OK
[2020-06-12 10:54:31:037_S:] AT+QNWINFO
[2020-06-12 10:54:31:052_R:] AT+QNWINFO

[2020-06-12 10:54:31:068_R:] +QNWINFO: "WCDMA","26001","WCDMA 900",3030

[2020-06-12 10:54:31:068_R:] OK
[2020-06-12 10:55:12:488_S:] AT+QCFG="band"
[2020-06-12 10:55:12:488_R:] AT+QCFG="band"

[2020-06-12 10:55:12:503_R:] +QCFG: "band",0x93,0x1a0080800c5,0x1

[2020-06-12 10:55:12:503_R:] OK
[2020-06-12 10:55:46:955_S:] AT+QCFG="NWSCANMODE"
[2020-06-12 10:55:46:970_R:] AT+QCFG="NWSCANMODE"

[2020-06-12 10:55:46:986_R:] +QCFG: "nwscanmode",0

[2020-06-12 10:55:46:986_R:] OK
[2020-06-12 10:56:04:844_S:] AT+CFUN?
[2020-06-12 10:56:04:860_R:] AT+CFUN?

[2020-06-12 10:56:04:875_R:] +CFUN: 1

[2020-06-12 10:56:04:875_R:] OK
[2020-06-12 10:56:12:625_S:] AT+CREG?
[2020-06-12 10:56:12:641_R:] AT+CREG?

[2020-06-12 10:56:12:641_R:] +CREG: 0,2

[2020-06-12 10:56:12:641_R:] OK
[2020-06-12 10:56:19:187_S:] AT+CEREG?
[2020-06-12 10:56:19:203_R:] AT+CEREG?

[2020-06-12 10:56:19:203_R:] +CEREG: 0,4

[2020-06-12 10:56:19:203_R:] OK
[2020-06-12 10:56:47:326_S:] AT+QENG="SERVINGCELL"
[2020-06-12 10:56:47:342_R:] AT+QENG="SERVINGCELL"

[2020-06-12 10:56:47:342_R:] +QENG: "servingcell","SEARCH"

[2020-06-12 10:56:47:342_R:] OK
[2020-06-12 10:56:54:076_S:] AT+QENG="SERVINGCELL"
[2020-06-12 10:56:54:092_R:] AT+QENG="SERVINGCELL"

[2020-06-12 10:56:54:092_R:] +QENG: "servingcell","SEARCH"

[2020-06-12 10:56:54:092_R:] OK

[Kyson]

Please refer to the AT command manual to check the command explanantion, the third parameters is tdsbandval, as you know that EC25EUX cannot support tdscdma, so thay the reason why you cannot set it. Thanks!

Please double check that whether the SIM card is normal, and you also can fix the module to LTE mode to have a try. Thanks!

[kmyg]

I know that it not support TDSCDMA.
But is set to 0x1 (TDS BCA) and i can’t disable it to 0x0.

I still have “No service” and cant’ register to the network.
Set only to LTE mode not help.
I tried SIM cards from 3 operators.

My AT commands is ok?
Maybe need flash with new firmware?

Best Regards,

[Kyson]

Dear Kmyg,
Please check the AT command Manual to find the AT command AT+QCFG=“nwscanmode”, 3,1.
About flash new firmware, you can email to support@quectel.com to get the firmware package and flash tool. Thanks!