Locking of band 28

Please which command to lock band 28. Also which command to revert to default set up.

hi,Kizsmart_Ventures:
If you have a 4G modem built into your device, you can perform the following instructions to lock band28

AT+QOPSCFG=“scancontrol”,2,0,0x8000000,0

When you are done, restart the device and the parameters will be restored to their default values

How can I revert to the default setup after band 28 lock

hi,Kizsmart_Ventures:
If you have already set up other bands, after you execute the above AT command, you will need to reconfigure the bands parameters according to the same AT command as above,because the terminal default is full band scanning if it reboot or reset.

AT+QOPSCFG=“scancontrol”,2,0,0x8000000,0
You just need to configure the frequency band you set before, as shown in the screenshot below

This is not working. AT+QOPSCFG=“scancontrol”,2,0,0x8000000,0
It’s returning error message

The band 28 code you suggested returned error. Please assist me with code to lock b28

After locking, how can I restore to default

hi,Kizsmart_Ventures:
I’m very sorry, I made a mistake, please refer to the following AT Command:

AT+QOPSCFG=“scancontrol”,2,0,8000000,0
or
AT+QCFG=“band”,0,8000000,0

AT+QCFG=“band”,5af0,2000001e0bb1e39df,0,1

Is this the default code after locking to a particular band

AT+QOPSCFG=“scancontrol”,2,0,8000000,0
or
AT+QCFG=“band”,0,8000000,0

Please explain better. Either of those can be used to lock band 28?

Please this is not working. Give me the AT command to lock band 28. The previous code you gave me return error message.

Below is the error message

+QTEMP: “tsens_tz_sensor2”,“51”
+QTEMP: “tsens_tz_sensor3”,“52”
+QTEMP: “tsens_tz_sensor4”,“52”
AT+CNMI=0,0
OK

Fri Jul 23 07:34:41 2021 : /dev/ttyUSB2 AT+CPMS=“SM”
+CPMS: 3,30,3,30,3,30
OK

Fri Jul 23 07:34:44 2021 : /dev/ttyUSB2 AT+QOPSCFG=“scancontrol”,2,0,8000000,0
ERROR

Fri Jul 23 07:34:48 2021 : /dev/ttyUSB2 AT+CREG=2;+CREG?;+CREG=0
+CREG: 2,1,“1FE0”,“113B50D”,7
OK
AT+CEREG=2;+CEREG?;+CEREG=0
+CEREG: 2,1,“1FE0”,“113B50D”,7
OK
AT+C5GREG=2;+C5GREG?;+C5GREG=0
ERROR

Fri Jul 23 07:34:54 2021 : /dev/ttyUSB2 AT+CSQ
+CSQ: 28,99
OK
AT+QENG=“servingcell”
+QENG: “servingcell”,“NOCONN”,“LTE”,“FDD”,621,20,113B50D,254,2850,7,5,5,1FE0,-88,-9,-59,16,-,-,-
OK
AT+QNWINFO
+QNWINFO: “FDD LTE”,“62120”,“LTE BAND 7”,2850
OK
AT+QCAINFO
+QCAINFO: “pcc”,2850,100,“LTE BAND 7”,1,254,-88,-9,-53,16
+QCAINFO: “scc”,1723,50,“LTE BAND 3”,1,254,-79,-8,-61,9,DL
OK
AT+QCFG=“nwscanmode”
+QCFG: “nwscanmode”,0
OK
AT+QTEMP
OK
+QTEMP: “xo_therm_buf”,“49”
+QTEMP: “mdm_case_therm”,“49”
+QTEMP: “pa_therm1”,“48”
+QTEMP: “tsens_tz_sensor0”,“52”
+QTEMP: “tsens_tz_sensor1”,“52”
+QTEMP: “tsens_tz_sensor2”,“51”
+QTEMP: “tsens_tz_sensor3”,“51”
+QTEMP: “tsens_tz_sensor4”,“52”
AT+CNMI=0,0
OK

hi,Kizsmart_Ventures:
Please try using this command:

AT+QCFG=“band”,0,8000000,0

In the meantime, congratulations on the carrier aggregation of the terminal.

Below is still the error message I get. I cannot lock band 28

+QCFG: “nwscanmode”,0
OK
AT+QTEMP
OK
+QTEMP: “xo_therm_buf”,“51”
+QTEMP: “mdm_case_therm”,“51”
+QTEMP: “pa_therm1”,“49”
+QTEMP: “tsens_tz_sensor0”,“56”
+QTEMP: “tsens_tz_sensor1”,“55”
+QTEMP: “tsens_tz_sensor2”,“55”
+QTEMP: “tsens_tz_sensor3”,“56”
+QTEMP: “tsens_tz_sensor4”,“55”
AT+CNMI=0,0
OK

Fri Jul 23 13:49:19 2021 : /dev/ttyUSB2 AT+QCFG=“band”,0,8000000,0
ERROR

Fri Jul 23 13:49:21 2021 : /dev/ttyUSB2 AT+CPMS=“SM”
+CPMS: 3,30,3,30,3,30
OK

Fri Jul 23 13:49:28 2021 : /dev/ttyUSB2 AT+CSQ
+CSQ: 29,99
OK
AT+QENG=“servingcell”
+QENG: “servingcell”,“NOCONN”,“LTE”,“FDD”,621,20,113B50D,254,2850,7,5,5,1FE0,-86,-9,-56,18,-,30,-
OK
AT+QNWINFO
+QNWINFO: “FDD LTE”,“62120”,“LTE BAND 7”,2850
OK
AT+QCAINFO
+QCAINFO: “pcc”,2850,100,“LTE BAND 7”,1,254,-86,-10,-55,19
+QCAINFO: “scc”,1723,50,“LTE BAND 3”,2,254,-76,-10,-46,19,DL
OK
AT+QCFG=“nwscanmode”
+QCFG: “nwscanmode”,0
OK
AT+QTEMP
OK
+QTEMP: “xo_therm_buf”,“51”
+QTEMP: “mdm_case_therm”,“52”
+QTEMP: “pa_therm1”,“49”
+QTEMP: “tsens_tz_sensor0”,“56”
+QTEMP: “tsens_tz_sensor1”,“55”
+QTEMP: “tsens_tz_sensor2”,“54”
+QTEMP: “tsens_tz_sensor3”,“55”
+QTEMP: “tsens_tz_sensor4”,“55”
AT+CNMI=0,0
OK

i have been able to lock band 28