CLIR is not Working for LTE under VIVO Brazlian network

Mauricio_Bertucci · February 14, 2026, 2:47am

I am facing the following problem, clir is not working.

I have 8 quectel modules:
EC25 - Revision: EC25AUGCR06A03M1G

I dial using code ATD#31#+number , to restrict CallerID identification, but the opposite part received the calling part number.

I tried to use the command AT+CLID=1 to set the restriction manually;

I dial once more without #311 , only ATD+number and did not work again.

So I changed the Quectel module from LTE to WCDMA, and CLIR worked. The problem occurs only in LTE mode,

So I back to LTE mode.

Using at command:+QENG=“servingcell”, I confirmed that I was running in LTE mode.
+QENG: “servingcell”,“NOCONN”,“LTE”,“FDD”,724,10,DBE32C9,2,500,1,5,5,C3C0,-86,-18,-48,-4,35

So I did the following test:
I dial out wirh a number without semicolon
ATD40092407
The system freeze with no answer and keep the line like this:
2026-02-13 20:07:32 TX:[atd#31#40092407]
So I dial in sequence the same number with semicolon:

2026-02-13 20:08:43 TX:[atd#31#40092407;]
2026-02-13 20:08:43 OK

+QIND: “csq”,13,99

+QIND: “csq”,12,99
And the CLIR worked!! But I check the mobile status and the system switch from LTE to WCDMA automatically (very confused because i did not asked to do this)
2026-02-13 20:08:47 TX:[AT+QENG=“servingcell”]
2026-02-13 20:08:47 +QENG: “servingcell”,“CONNECT”,“WCDMA”,724,10,9CB0,2C85526,10737,13,1,-87,-13,0,5,8,6,0

Atfer a answer the call and hang-up , I check the mobile status:
2026-02-13 20:12:59 TX:[AT+QENG=“servingcell”]
2026-02-13 20:12:59 +QENG: “servingcell”,“NOCONN”,“LTE”,“FDD”,724,10,DBE32C9,2,500,1,5,5,C3C0,-86,-17,-48,-4,35
How could this happen??? The system switch back to LTE without any command.

So I have tried to check CLIR status:
2026-02-13 20:14:12 TX:[AT+CLIR?]
Freezes over this line and there is no answer. The line freezer forever.
So I have sent another command over this freeze line:
2026-02-13 20: 20:15:11 TX:[AT+COPS?]
2026-02-13 20: 20:15:11 +COPS: 1,0,“Vivo VIVO”,7

I have confirmed that VIVO is my local network provider.

And my final test was to check if VIVO was listed for VOLTE:

2026-02-13 20:17:34 TX:[AT+QMBNCFG=“List”]
2026-02-13 20:17:34 +QMBNCFG: “List”,0,0,0,“TW_Mobile_China_VoLTE”,0x05800301,201805021
2026-02-13 20:17:34 +QMBNCFG: “List”,1,0,0,“Bouygues_France_VoLTE”,0x05800101,201705111
2026-02-13 20:17:34 +QMBNCFG: “List”,2,0,0,“VF_Germany_VoLTE”,0x05010415,201705111
+QMBNCFG: “List”,3,0,0,“Reliance_India_VoLTE”,0x05800204,201712141
2026-02-13 20:17:34 +QMBNCFG: “List”,4,0,0,“Commercial-Smartfren”,0x05012509,201801081
+QMBNCFG: “List”,5,0,0,“Telstra-Commercial_VoLTE”,0x05800713,201803091
+QMBNCFG: “List”,6,1,1,“TIM_Brasil_VoLTE”,0x05800B02,201806061

There is VIVO or Generic VOlte into list.

Could you help me how to figure out what is happening?

Mauricio

aghelan_loga · March 2, 2026, 9:51am

Dear @Mauricio_Bertucci ,

Thank you for providing the detailed information regarding this issue.

What you’re encountering is consistent with how voice and supplementary services behave on LTE when VoLTE is not properly in use for the current operator profile.

This happens due to:

CLIR is a network supplementary service that is applied to the voice call setup. On LTE, CLIR will only behave “as LTE voice” if the call is truly VoLTE/IMS. If VoLTE is not active for the current SIM/operator configuration, the module will place voice calls by falling back to the circuit-switched domain (CSFB), typically to WCDMA/2G.
Your log confirms exactly that. When you dial with the semicolon, the call succeeds, CLIR works, and the serving cell immediately becomes WCDMA. That is CSFB in action. After the call ends, the module returns to LTE automatically, this is normal, and it explains why you see LTE again without sending any RAT command.
The “freeze” you see when dialing without the semicolon is because a dial string without “;” is not handled as a normal voice call in the same way. For voice calls you should always use the “;” suffix (voice call setup). Without it, the behavior can look like the terminal is stuck because you are not entering the voice-call path cleanly.
Your MBN list shows TIM_Brasil_VoLTE, but there is no Vivo VoLTE profile shown. Without the correct operator VoLTE configuration (and operator provisioning), the module will not establish VoLTE on Vivo, so voice will continue to be handled via CSFB, and CLIR behavior will follow CS rules (working on WCDMA/2G, not reliably on “LTE-only” expectations).

In order to resolve this kindly:

A) Use the correct dialing format for voice calls

Always dial voice with semicolon:
ATD#31#;
Or enable CLIR permanently and dial normally:
AT+CLIR=1
ATD;

Do not use AT+CLID for this purpose, AT+CLID controls presentation of the called party number to you (incoming call line ID), not suppression of your own outgoing caller ID.

B) Confirm whether the call is VoLTE or CSFB

Before and during the call, check the serving cell as you did:
AT+QENG=“servingcell”
If it switches to WCDMA/2G during the call, it is CSFB. In that case, CLIR is applied in CS domain (and your test already proves it works there).

C) If you need CLIR to work while staying on LTE (VoLTE case)

You will need VoLTE to be enabled and working on Vivo for your SIM, and the module must be using a Vivo-compatible VoLTE configuration/profile.
Since Vivo is not shown in your current VoLTE MBN list, the practical next step is to upgrade to a firmware package that includes the correct Brazil/Vivo VoLTE configuration (or obtain the correct MBN package for Vivo), and ensure the SIM line is provisioned by Vivo for VoLTE and CLIR.

D) About AT+CLIR? freezing

If this happens consistently in idle state, it points to a firmware behavior issue around the CLIR query path. The best corrective action is to upgrade to the latest EC25AUGCR06Ax firmware and retest AT+CLIR? right after network registration (before any call attempts). If it still hangs on the latest build, we will need to reproduce with a full AT log and confirm internally.

To proceed efficiently, please share:

The full AT output of ATI and AT+QGMR
Whether VoLTE is enabled/provisioned on the Vivo SIM (from the operator side)
A short full log from power-on → registration → AT+CLIR? → one call attempt using ATD#31#;

Once we have that, we can confirm whether you are operating in CSFB only (expected behavior) or if there is a firmware issue.

Best Regards,
Aghelan

Mauricio_Bertucci · March 2, 2026, 11:55am

Dear Aghelan,

Good morning.

Thank you for answer and help me with this issue.

I will forward the asked information:
2026-03-02 18:15:01 Quectel
EC25
Revision: EC25AUGCR06A03M1G

2026-03-02 18:16:01 TX:[AT+QGMR]
2026-03-02 18:16:01 EC25AUGCR06A03M1G_01.001.01.001

Power on log:
2026-03-02 10:07:38 TX:[AT]
2026-03-02 10:07:38 Card inserted
2026-03-02 10:07:38 TX:[AT]
2026-03-02 10:07:38 OK
2026-03-02 10:07:38 TX:[AT]
2026-03-02 10:07:38 OK
2026-03-02 10:07:38 TX:[AT]
2026-03-02 10:07:38 OK
2026-03-02 10:07:38 TX:[ATZ]
2026-03-02 10:07:38 OK
2026-03-02 10:07:40 TX:[ATH]
2026-03-02 10:07:40 OK
2026-03-02 10:07:40 TX:[ATE0]
2026-03-02 10:07:40 OK
2026-03-02 10:07:40 TX:[AT+CMEE=2]
2026-03-02 10:07:40 OK
2026-03-02 10:07:40 TX:[AT+CGMM]
2026-03-02 10:07:40 EC25

OK
2026-03-02 10:07:40 TX:[AT+CGMI]
2026-03-02 10:07:40 Quectel

OK
2026-03-02 10:07:40 TX:[AT+CGMR]
2026-03-02 10:07:40 EC25AUGCR06A03M1G

OK
2026-03-02 10:07:40 TX:[AT]
2026-03-02 10:07:40 OK
2026-03-02 10:07:40 TX:[AT+CGSN]
2026-03-02 10:07:40 861585044229449

OK
2026-03-02 10:07:40 TX:[AT+CFUN=0]
2026-03-02 10:07:42 OK

+CREG: 0
2026-03-02 10:07:42 TX:[AT+CFUN=1]
2026-03-02 10:07:43 OK
2026-03-02 10:07:43 TX:[AT+CPIN?]
2026-03-02 10:07:43 +CPIN: READY

+QUSIM: 1
2026-03-02 10:07:43 TX:[AT+CPIN?]
2026-03-02 10:07:43 +CPIN: READY

OK
2026-03-02 10:07:44 TX:[AT+CIMI]
2026-03-02 10:07:44 +CPIN: READY

OK

+QIND: SMS DONE
2026-03-02 10:07:44 TX:[AT+CIMI]
2026-03-02 10:07:44 724106804996199

OK

+QIND: PB DONE
2026-03-02 10:07:45 TX:[AT+QCFG=“nwscanmode”,0,1]
2026-03-02 10:07:45 724106804996199

OK
2026-03-02 10:07:45 TX:[AT+CIMI]
2026-03-02 10:07:45 OK
2026-03-02 10:07:45 TX:[AT+QCFG=“nwscanmode”,0,1]
2026-03-02 10:07:45 OK
2026-03-02 10:07:46 TX:[AT+QCFG=“band”,2ff,80080000df,0,1]
2026-03-02 10:07:46 OK
2026-03-02 10:07:46 TX:[AT+CREG=1]
2026-03-02 10:07:46 OK
2026-03-02 10:07:46 TX:[AT+CREG?]
2026-03-02 10:07:46 +CREG: 1,0

OK
2026-03-02 10:07:48 +CREG: 1
2026-03-02 10:07:50 TX:[AT+CREG?]
2026-03-02 10:07:50 +CREG: 1,1

OK
2026-03-02 10:07:50 TX:[AT+COPS=3,0]
2026-03-02 10:07:50 OK
2026-03-02 10:07:50 TX:[AT+COPS?]
2026-03-02 10:07:50 +COPS: 1,0,“Vivo VIVO”,7

OK
2026-03-02 10:07:50 TX:[AT+CLIP=1]
2026-03-02 10:07:50 OK
2026-03-02 10:07:50 TX:[AT+CLIR=2]
2026-03-02 10:07:50 OK
2026-03-02 10:07:50 TX:[AT+CCWA=1]
2026-03-02 10:07:50 OK
2026-03-02 10:07:50 TX:[AT+QINDCFG=“csq”,1]
2026-03-02 10:07:50 OK
2026-03-02 10:07:50 TX:[AT]
2026-03-02 10:07:50 OK
2026-03-02 10:07:50 TX:[AT+CNMI=2,2,0,0,0]
2026-03-02 10:07:50 OK
2026-03-02 10:07:50 TX:[ATX4]
2026-03-02 10:07:50 OK
2026-03-02 10:07:50 TX:[AT+CSCS=“GSM”]
2026-03-02 10:07:50 OK
2026-03-02 10:07:50 TX:[AT+CSCA?]
2026-03-02 10:07:51 +CSCA: “+550112102010”,145

OK
2026-03-02 10:07:51 TX:[AT+QNWINFO]
2026-03-02 10:07:51 +QNWINFO: “FDD LTE”,“72410”,“LTE BAND 28”,9510

OK
2026-03-02 10:07:51 TX:[AT+QAUDMOD=1]
2026-03-02 10:07:51 OK
2026-03-02 10:07:51 TX:[AT+QMIC=11172,11172]
2026-03-02 10:07:51 OK
2026-03-02 10:07:51 TX:[AT+QRXGAIN=60000]
2026-03-02 10:07:51 OK
2026-03-02 10:07:51 TX:[AT+QSIDET=0]
2026-03-02 10:07:51 OK
2026-03-02 10:07:51 TX:[AT+QURCCFG=“urcport”,“uart1”]
2026-03-02 10:07:51 OK
2026-03-02 10:07:51 TX:[AT&W]
2026-03-02 10:07:51 OK
2026-03-02 10:07:51 TX:[AT+CSQ]
2026-03-02 10:07:51 +CSQ: 31,99

OK
2026-03-02 10:07:54 +QIND: “csq”,23,99
2026-03-02 10:08:01 TX:[AT+CSQ]
2026-03-02 10:08:01 +CSQ: 23,99

OK
2026-03-02 10:08:06 +QIND: “csq”,20,99
2026-03-02 10:08:11 TX:[AT+CSQ]
2026-03-02 10:08:11 +CSQ: 20,99
2026-03-02 10:08:11 OK
2026-03-02 10:08:21 TX:[AT+CSQ]
2026-03-02 10:08:21 +CSQ: 20,99

OK
2026-03-02 10:08:27 +QIND: “csq”,23,99
2026-03-02 10:08:31 TX:[AT+CSQ]
2026-03-02 10:08:31 +CSQ: 23,99
2026-03-02 10:08:31 OK
2026-03-02 10:08:39 +QIND: “csq”,26,99
2026-03-02 10:08:41 TX:[AT+CSQ]
2026-03-02 10:08:41 +CSQ: 26,99

OK
2026-03-02 10:08:42 +QIND: “csq”,23,99
2026-03-02 10:08:51 TX:[AT+CSQ]
2026-03-02 10:08:51 +CSQ: 23,99

OK
2026-03-02 10:09:01 TX:[AT+CSQ]
2026-03-02 10:09:01 +CSQ: 23,99

OK
2026-03-02 10:09:09 +QIND: “csq”,26,99
2026-03-02 10:09:11 TX:[AT+CSQ]
2026-03-02 10:09:11 +CSQ: 26,99

OK
2026-03-02 10:09:12 +QIND: “csq”,23,99
2026-03-02 10:09:21 TX:[AT+CSQ]
2026-03-02 10:09:21 +CSQ: 23,99

OK
2026-03-02 10:09:31 TX:[AT+CSQ]
2026-03-02 10:09:31 +CSQ: 23,99

OK
2026-03-02 10:09:41 TX:[AT+CSQ]
2026-03-02 10:09:41 +CSQ: 23,99

OK
2026-03-02 10:09:51 TX:[AT+CSQ]
2026-03-02 10:09:51 +CSQ: 23,99

OK
2026-03-02 10:10:01 TX:[AT+CSQ]
2026-03-02 10:10:01 +CSQ: 23,99

OK
2026-03-02 10:10:11 TX:[AT+CSQ]
2026-03-02 10:10:11 +CSQ: 23,99

OK
2026-03-02 10:10:21 TX:[AT+CSQ]
2026-03-02 10:10:21 +CSQ: 23,99

OK
2026-03-02 10:10:31 TX:[AT+CSQ]
2026-03-02 10:10:31 +CSQ: 23,99

OK
2026-03-02 10:10:39 +QIND: “csq”,20,99
2026-03-02 10:10:41 TX:[AT+CSQ]
2026-03-02 10:10:41 +CSQ: 20,99

OK
2026-03-02 10:10:51 TX:[AT+CSQ]
2026-03-02 10:10:51 +CSQ: 20,99

OK
2026-03-02 10:11:01 TX:[AT+CSQ]
2026-03-02 10:11:01 +CSQ: 20,99

OK
2026-03-02 10:11:11 TX:[AT+CSQ]
2026-03-02 10:11:11 +CSQ: 20,99

OK
2026-03-02 10:11:21 TX:[AT+CSQ]
2026-03-02 10:11:21 +CSQ: 20,99

OK
2026-03-02 10:11:31 TX:[AT+CSQ]
2026-03-02 10:11:31 +CSQ: 20,99

OK
2026-03-02 10:11:41 TX:[AT+CSQ]
2026-03-02 10:11:41 +CSQ: 20,99

OK
2026-03-02 10:11:51 +QIND: “csq”,24,99
2026-03-02 10:11:51 TX:[AT+CSQ]
2026-03-02 10:11:51 +CSQ: 24,99

OK
2026-03-02 10:12:01 TX:[AT+CSQ]
2026-03-02 10:12:01 +CSQ: 24,99

OK
2026-03-02 10:12:11 TX:[AT+CSQ]
2026-03-02 10:12:11 +CSQ: 24,99

OK
2026-03-02 10:12:21 TX:[AT+CSQ]
2026-03-02 10:12:21 +CSQ: 24,99

OK
2026-03-02 10:12:31 TX:[AT+CSQ]
2026-03-02 10:12:31 +CSQ: 24,99

OK
2026-03-02 10:12:41 TX:[AT+CSQ]
2026-03-02 10:12:41 +CSQ: 24,99

OK
2026-03-02 10:12:42 +QIND: “csq”,21,99
2026-03-02 10:12:51 TX:[AT+CSQ]
2026-03-02 10:12:51 +CSQ: 21,99

OK
2026-03-02 10:13:01 TX:[AT+CSQ]
2026-03-02 10:13:01 +CSQ: 21,99

OK
2026-03-02 10:13:11 TX:[AT+CSQ]
2026-03-02 10:13:11 +CSQ: 21,99

OK
2026-03-02 10:13:21 TX:[AT+CSQ]
2026-03-02 10:13:21 +CSQ: 21,99
2026-03-02 10:13:21 OK
2026-03-02 10:13:24 +QIND: “csq”,25,99
2026-03-02 10:13:30 +QIND: “csq”,21,99
2026-03-02 10:13:31 TX:[AT+CSQ]
2026-03-02 10:13:31 +CSQ: 21,99

OK
2026-03-02 10:13:39 +QIND: “csq”,26,99
2026-03-02 10:13:41 TX:[AT+CSQ]
2026-03-02 10:13:41 +CSQ: 26,99

OK
2026-03-02 10:13:42 +QIND: “csq”,22,99
2026-03-02 10:13:48 +QIND: “csq”,25,99
2026-03-02 10:13:51 +QIND: “csq”,22,99
2026-03-02 10:13:51 TX:[AT+CSQ]
2026-03-02 10:13:51 +CSQ: 22,99

OK
2026-03-02 10:14:01 TX:[AT+CSQ]
2026-03-02 10:14:01 +CSQ: 22,99

OK
2026-03-02 10:14:11 TX:[AT+CSQ]
2026-03-02 10:14:11 +CSQ: 22,99

OK
2026-03-02 10:14:21 TX:[AT+CSQ]
2026-03-02 10:14:21 +CSQ: 22,99

OK
2026-03-02 10:14:31 TX:[AT+CSQ]
2026-03-02 10:14:31 +CSQ: 22,99

OK
2026-03-02 10:14:41 TX:[AT+CSQ]
2026-03-02 10:14:41 +CSQ: 22,99

OK
2026-03-02 10:14:51 TX:[AT+CSQ]
2026-03-02 10:14:51 +CSQ: 22,99

OK
2026-03-02 10:15:01 TX:[AT+CSQ]
2026-03-02 10:15:01 +CSQ: 22,99

OK
2026-03-02 10:15:11 TX:[AT+CSQ]
2026-03-02 10:15:11 +CSQ: 22,99

OK
2026-03-02 10:15:21 TX:[AT+CSQ]
2026-03-02 10:15:21 +CSQ: 22,99

OK
2026-03-02 10:15:31 TX:[AT+CSQ]
2026-03-02 10:15:31 +CSQ: 22,99

OK
2026-03-02 10:15:41 TX:[AT+CSQ]
2026-03-02 10:15:41 +CSQ: 22,99

OK
2026-03-02 10:15:51 TX:[AT+CSQ]
2026-03-02 10:15:51 +CSQ: 22,99

OK
2026-03-02 10:16:01 TX:[AT+CSQ]
2026-03-02 10:16:01 +CSQ: 22,99

OK
2026-03-02 10:16:11 TX:[AT+CSQ]
2026-03-02 10:16:11 +CSQ: 22,99

OK
2026-03-02 10:16:21 TX:[AT+CSQ]
2026-03-02 10:16:21 +CSQ: 22,99
2026-03-02 10:16:21 OK
2026-03-02 10:16:31 TX:[AT+CSQ]
2026-03-02 10:16:31 +CSQ: 22,99
2026-03-02 10:16:31 OK
2026-03-02 10:16:41 TX:[AT+CSQ]
2026-03-02 10:16:41 +CSQ: 22,99

OK
2026-03-02 10:16:51 TX:[AT+CSQ]
2026-03-02 10:16:51 +CSQ: 22,99
2026-03-02 10:16:51 OK
2026-03-02 10:17:01 TX:[AT+CSQ]
2026-03-02 10:17:01 +CSQ: 22,99

OK
2026-03-02 10:17:11 TX:[AT+CSQ]
2026-03-02 10:17:11 +CSQ: 22,99

OK
2026-03-02 10:17:21 TX:[AT+CSQ]
2026-03-02 10:17:21 +CSQ: 22,99

OK
2026-03-02 10:17:31 TX:[AT+CSQ]
2026-03-02 10:17:31 +CSQ: 22,99

OK
2026-03-02 10:17:41 TX:[AT+CSQ]
2026-03-02 10:17:41 +CSQ: 22,99

OK
2026-03-02 10:17:51 TX:[AT+CSQ]
2026-03-02 10:17:51 +CSQ: 22,99

OK
2026-03-02 10:18:01 TX:[AT+CSQ]
2026-03-02 10:18:01 +CSQ: 22,99

OK
2026-03-02 10:18:11 TX:[AT+CSQ]
2026-03-02 10:18:11 +CSQ: 22,99

OK
2026-03-02 10:18:21 TX:[AT+CSQ]
2026-03-02 10:18:21 +CSQ: 22,99

OK
2026-03-02 10:18:31 TX:[AT+CSQ]
2026-03-02 10:18:31 +CSQ: 22,99

OK
2026-03-02 10:18:41 TX:[AT+CSQ]
2026-03-02 10:18:41 +CSQ: 22,99

OK
2026-03-02 10:18:51 TX:[AT+CSQ]
2026-03-02 10:18:51 +CSQ: 22,99
2026-03-02 10:18:51 OK
2026-03-02 10:19:01 TX:[AT+CSQ]
2026-03-02 10:19:01 +CSQ: 22,99
2026-03-02 10:19:01 OK
2026-03-02 10:19:11 TX:[AT+CSQ]
2026-03-02 10:19:11 +CSQ: 22,99

OK
2026-03-02 10:19:12 +QIND: “csq”,28,99
2026-03-02 10:19:15 +QIND: “csq”,22,99
2026-03-02 10:19:21 TX:[AT+CSQ]
2026-03-02 10:19:21 +CSQ: 22,99
2026-03-02 10:19:21 OK
2026-03-02 10:19:31 TX:[AT+CSQ]
2026-03-02 10:19:31 +CSQ: 22,99

OK
2026-03-02 10:19:41 TX:[AT+CSQ]
2026-03-02 10:19:41 +CSQ: 22,99

OK
2026-03-02 10:19:51 TX:[AT+CSQ]
2026-03-02 10:19:51 +CSQ: 22,99

OK
2026-03-02 10:20:01 TX:[AT+CSQ]
2026-03-02 10:20:01 +CSQ: 22,99

OK
2026-03-02 10:20:11 TX:[AT+CSQ]
2026-03-02 10:20:11 +CSQ: 22,99

OK
2026-03-02 10:20:21 TX:[AT+CSQ]
2026-03-02 10:20:21 +CSQ: 22,99

OK
2026-03-02 10:20:31 TX:[AT+CSQ]
2026-03-02 10:20:31 +CSQ: 22,99

OK
2026-03-02 10:20:41 TX:[AT+CSQ]
2026-03-02 10:20:41 +CSQ: 22,99

OK
2026-03-02 10:20:51 TX:[AT+CSQ]
2026-03-02 10:20:51 +CSQ: 22,99

OK
2026-03-02 10:21:01 TX:[AT+CSQ]
2026-03-02 10:21:01 +CSQ: 22,99
2026-03-02 10:21:01 OK
2026-03-02 10:21:11 TX:[AT+CSQ]
2026-03-02 10:21:11 +CSQ: 22,99

OK
2026-03-02 10:21:21 TX:[AT+CSQ]
2026-03-02 10:21:21 +CSQ: 22,99

OK
2026-03-02 10:21:31 TX:[AT+CSQ]
2026-03-02 10:21:31 +CSQ: 22,99

OK
2026-03-02 10:21:33 +QIND: “csq”,25,99
2026-03-02 10:21:36 +QIND: “csq”,22,99
2026-03-02 10:21:41 TX:[AT+CSQ]
2026-03-02 10:21:41 +CSQ: 22,99

OK
2026-03-02 10:21:51 TX:[AT+CSQ]
2026-03-02 10:21:51 +CSQ: 22,99
2026-03-02 10:21:51 OK
2026-03-02 10:22:01 TX:[AT+CSQ]
2026-03-02 10:22:01 +CSQ: 22,99

OK
2026-03-02 10:22:11 TX:[AT+CSQ]
2026-03-02 10:22:11 +CSQ: 22,99

OK
2026-03-02 10:22:21 TX:[AT+CSQ]
2026-03-02 10:22:21 +CSQ: 22,99

OK
2026-03-02 10:22:31 TX:[AT+CSQ]
2026-03-02 10:22:31 +CSQ: 22,99

OK
2026-03-02 10:22:41 TX:[AT+CSQ]
2026-03-02 10:22:41 +CSQ: 22,99

OK
2026-03-02 10:22:51 TX:[AT+CSQ]
2026-03-02 10:22:51 +CSQ: 22,99

OK
2026-03-02 10:23:01 TX:[AT+CSQ]
2026-03-02 10:23:01 +CSQ: 22,99

OK
2026-03-02 10:23:11 TX:[AT+CSQ]
2026-03-02 10:23:11 +CSQ: 22,99

OK
2026-03-02 10:23:21 TX:[AT+CSQ]
2026-03-02 10:23:21 +CSQ: 22,99

OK
2026-03-02 10:23:31 TX:[AT+CSQ]
2026-03-02 10:23:31 +CSQ: 22,99

OK
2026-03-02 10:23:41 TX:[AT+CSQ]
2026-03-02 10:23:41 +CSQ: 22,99

OK
2026-03-02 10:23:51 TX:[AT+CSQ]
2026-03-02 10:23:51 +CSQ: 22,99

OK
2026-03-02 10:24:01 TX:[AT+CSQ]
2026-03-02 10:24:01 +CSQ: 22,99

OK
2026-03-02 10:24:11 TX:[AT+CSQ]
2026-03-02 10:24:11 +CSQ: 22,99

OK
2026-03-02 10:24:18 +QIND: “csq”,26,99
2026-03-02 10:24:21 TX:[AT+CSQ]
2026-03-02 10:24:21 +CSQ: 26,99

OK
2026-03-02 10:24:21 +QIND: “csq”,21,99
2026-03-02 10:24:27 +QIND: “csq”,24,99
2026-03-02 10:24:31 TX:[AT+CSQ]
2026-03-02 10:24:31 +CSQ: 24,99

OK
2026-03-02 10:24:41 TX:[AT+CSQ]
2026-03-02 10:24:41 +CSQ: 24,99

OK
2026-03-02 10:24:45 +QIND: “csq”,21,99
2026-03-02 10:24:48 +QIND: “csq”,25,99
2026-03-02 10:24:51 TX:[AT+CSQ]
2026-03-02 10:24:51 +CSQ: 25,99

OK
2026-03-02 10:24:54 +QIND: “csq”,21,99
2026-03-02 10:25:01 TX:[AT+CSQ]
2026-03-02 10:25:01 +CSQ: 21,99

OK
2026-03-02 10:25:11 TX:[AT+CSQ]
2026-03-02 10:25:11 +CSQ: 21,99

OK
2026-03-02 10:25:21 TX:[AT+CSQ]
2026-03-02 10:25:21 +CSQ: 21,99

OK
2026-03-02 10:25:31 TX:[AT+CSQ]
2026-03-02 10:25:31 +CSQ: 21,99

OK
2026-03-02 10:25:41 TX:[AT+CSQ]
2026-03-02 10:25:41 +CSQ: 21,99

OK
2026-03-02 10:25:51 TX:[AT+CSQ]
2026-03-02 10:25:51 +CSQ: 21,99
2026-03-02 10:25:51 OK
2026-03-02 10:26:01 TX:[AT+CSQ]
2026-03-02 10:26:01 +CSQ: 21,99
2026-03-02 10:26:01 OK
2026-03-02 10:26:11 TX:[AT+CSQ]
2026-03-02 10:26:11 +CSQ: 21,99

OK
2026-03-02 10:26:21 TX:[AT+CSQ]
2026-03-02 10:26:21 +CSQ: 21,99

OK
2026-03-02 10:26:31 TX:[AT+CSQ]
2026-03-02 10:26:31 +CSQ: 21,99

OK
2026-03-02 10:26:39 +QIND: “csq”,25,99
2026-03-02 10:26:41 TX:[AT+CSQ]
2026-03-02 10:26:41 +CSQ: 25,99

OK
2026-03-02 10:26:42 +QIND: “csq”,21,99
2026-03-02 10:26:51 TX:[AT+CSQ]
2026-03-02 10:26:51 +CSQ: 21,99
2026-03-02 10:26:51 OK
2026-03-02 10:27:01 TX:[AT+CSQ]
2026-03-02 10:27:01 +CSQ: 21,99

OK
2026-03-02 10:27:11 TX:[AT+CSQ]
2026-03-02 10:27:11 +CSQ: 21,99

OK
2026-03-02 10:27:21 TX:[AT+CSQ]
2026-03-02 10:27:21 +CSQ: 21,99

OK
2026-03-02 10:27:31 TX:[AT+CSQ]
2026-03-02 10:27:31 +CSQ: 21,99

OK
2026-03-02 10:27:41 TX:[AT+CSQ]
2026-03-02 10:27:41 +CSQ: 21,99

OK
2026-03-02 10:27:51 TX:[AT+CSQ]
2026-03-02 10:27:51 +CSQ: 21,99
2026-03-02 10:27:51 OK
2026-03-02 10:27:54 +QIND: “csq”,24,99
2026-03-02 10:28:01 TX:[AT+CSQ]
2026-03-02 10:28:01 +CSQ: 24,99

OK
2026-03-02 10:28:09 +QIND: “csq”,21,99
2026-03-02 10:28:11 TX:[AT+CSQ]
2026-03-02 10:28:11 +CSQ: 21,99

OK
2026-03-02 10:28:21 TX:[AT+CSQ]
2026-03-02 10:28:21 +CSQ: 21,99

OK
2026-03-02 10:28:31 TX:[AT+CSQ]
2026-03-02 10:28:31 +CSQ: 21,99

OK
2026-03-02 10:28:41 TX:[AT+CSQ]
2026-03-02 10:28:41 +CSQ: 21,99

OK
2026-03-02 10:28:51 TX:[AT+CSQ]
2026-03-02 10:28:51 +CSQ: 21,99

OK
2026-03-02 10:29:01 TX:[AT+CSQ]
2026-03-02 10:29:01 +CSQ: 21,99

OK
2026-03-02 10:29:11 TX:[AT+CSQ]
2026-03-02 10:29:11 +CSQ: 21,99
2026-03-02 10:29:11 OK
2026-03-02 10:29:21 TX:[AT+CSQ]
2026-03-02 10:29:21 +CSQ: 21,99

OK
2026-03-02 10:29:31 TX:[AT+CSQ]
2026-03-02 10:29:31 +CSQ: 21,99

OK
2026-03-02 10:29:41 TX:[AT+CSQ]
2026-03-02 10:29:41 +CSQ: 21,99

OK
2026-03-02 10:29:51 TX:[AT+CSQ]
2026-03-02 10:29:51 +CSQ: 21,99

OK
2026-03-02 10:30:01 TX:[AT+CSQ]
2026-03-02 10:30:01 +CSQ: 21,99

OK
2026-03-02 10:30:11 TX:[AT+CSQ]
2026-03-02 10:30:11 +CSQ: 21,99

OK
2026-03-02 10:30:21 TX:[AT+CSQ]
2026-03-02 10:30:21 +CSQ: 21,99

OK
2026-03-02 10:30:31 TX:[AT+CSQ]
2026-03-02 10:30:31 +CSQ: 21,99
2026-03-02 10:30:31 OK
2026-03-02 10:30:41 TX:[AT+CSQ]
2026-03-02 10:30:41 +CSQ: 21,99

OK
2026-03-02 10:30:51 TX:[AT+CSQ]
2026-03-02 10:30:51 +CSQ: 21,99

OK
2026-03-02 10:31:01 TX:[AT+CSQ]
2026-03-02 10:31:01 +CSQ: 21,99

Dial with CLIR inactive:
2026-03-02 10:40:21 TX:[AT+QENG=“servingcell”]
2026-03-02 10:40:21 +QENG: “servingcell”,“NOCONN”,“LTE”,“FDD”,724,10,DBE32A1,2,1750,3,5,5,C3C0,-84,-16,-48,1,37

OK
2026-03-02 10:40:21 TX:[AT+CSQ]
2026-03-02 10:40:21 +CSQ: 31,99

OK
2026-03-02 10:40:31 TX:[AT+CSQ]
2026-03-02 10:40:31 +CSQ: 31,99

OK
2026-03-02 10:40:33 TX:[atd40092401;] → DIAL TO LANDLINE MOBILE PHONE
2026-03-02 10:40:33 OK
2026-03-02 10:40:41 TX:[AT+QENG=“servingcell”]
2026-03-02 10:40:41 +QENG: “servingcell”,“CONNECT”,“LTE”,“FDD”,724,10,DBE32A1,2,1750,3,5,5,C3C0,-87,-17,-49,-3,-

OK
2026-03-02 10:40:41 TX:[AT+CSQ]
2026-03-02 10:40:41 +CSQ: 31,99
During the call I checked the “servingcell”. Still LTE
OK
2026-03-02 10:40:46 TX:[AT+QENG=“servingcell”]
2026-03-02 10:40:46 +QENG: “servingcell”,“CONNECT”,“LTE”,“FDD”,724,10,DBE32A1,2,1750,3,5,5,C3C0,-84,-15,-45,-1,-

OK

Dial with #31#
2026-03-02 10:46:37 TX:[atd#31#40092401;]
2026-03-02 10:46:37 OK

+QIND: “csq”,24,99
2026-03-02 10:46:41 TX:[AT+CSQ]
2026-03-02 10:46:41 +CSQ: 24,99

OK
2026-03-02 10:46:50 TX:[AT+QENG=“servingcell”]
2026-03-02 10:46:50 +QENG: “servingcell”,“CONNECT”,“WCDMA”,724,10,9CB0,2C88EE5,4379,101,1,-67,-11,0,6,2,6,0

OK

Now I have 2 questions.

How can I upgrade the firmware to last firmware version?
How can I check if VoLTE is active? I installed the SIM Card into my iPhone and the VOLTE is active for calls. My iPhone only has 4G and 5G options so I user #31# and CLIR worked. So I was wondering that VIVO profile is loaded into it. Is there a way to push (force) the VIVO MBN to Quectel module or get from AT command?

Best Regards,

Mauricio

Mauricio_Bertucci · March 2, 2026, 5:33pm

I forgot to ask, the firmware that could add VIVO.

Best Regards,

Mauricio

aghelan_loga · March 4, 2026, 2:35am

Dear @Mauricio_Bertucci ,

Thank you for providing the Logs and raising few queries.
Kindly check your mail inbox.
I have provided the explanation and next steps to resolve this issue via mail.

Best Regards,
Aghelan