Dear all,
I’m testing EC800M-CN in Vietnam, the module can’t register the network, i use sim of Mobifone, AT+CEREG? response +CEREG: 0,0
I have attached the log below for reference
AT+QPOWD=0
00>
00> OK
00>
00> POWERED DOWN
00>
00> 01/01/70 01:11:20 > TRACKER: GET NEW DATA 0->0
00>
00>
00> 01/01/70 01:11:20 > TRACKER: time not synchronized
00>
00>
00> RDY
00>
00> 01/01/70 01:11:21 > synch AT commnand…
00>
00> AT
00> AT
00>
00> OK
00>
00> 01/01/70 01:11:21 > OK
00>
00>
00> 01/01/70 01:11:22 > Set all current parameters to manufacturer defaults
00>
00> AT&F0
00> AT&F0
00>
00> OK
00> ATE0
00>
00> 01/01/70 01:11:22 > turn off echo
00>
00> ATE0
00>
00> OK
00>
00> 01/01/70 01:11:23 > Query (U)SIM status
00>
00> AT+CPIN?
00>
00> +CPIN: READY
00>
00> OK
00> ATI
00>
00> Quectel
00> EC800M
00> Revision: EC800MCNLCR06A04M04
00>
00> OK
00>
00> 01/01/70 01:11:24 > Disable network registration URC
00>
00> AT+CEREG=0
00>
00> OK
00> AT+GSN
00>
00> 867387067742364
00>
00> OK
00>
00> 01/01/70 01:11:25 > get IMEI 867387067742364
00>
00> AT+CMGF=1
00>
00> OK
00> AT&D0
00>
00> OK
00>
00> 01/01/70 01:11:26 > get CICCID
00>
00> AT+QCCID
00>
00> +QCCID: 8984012002501124159F
00>
00> OK
00> AT+CREG=0
00>
00> OK
00> AT+CFUN?
00>
00> +CFUN: 1
00>
00> OK
00>
00> 01/01/70 01:11:28 > Query Network Information
00>
00> AT+QNWINFO
00>
00> +QNWINFO: “FDD LTE”,“45201”,“LTE BAND 3”,1501
00>
00> OK
00>
00> 01/01/70 01:11:28 > Read Operator Names
00>
00> AT+COPS=?
00>
00> +COPS:(1,“”,“”,“45201”,7), (1,“”,“”,“45202”,7),(0-4),(0-2)
00>
00> OK
00>
00> 01/01/70 01:11:30 > TRACKER: GET NEW DATA 0->0
00>
00>
00> 01/01/70 01:11:30 > TRACKER: time not synchronized
00>
00> AT+COPS?
00>
00> +COPS: 0
00>
00> OK
00>
00> 01/01/70 01:11:30 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 29,99
00>
00> OK
00>
00> AT+CEREG?
00>
00> 01/01/70 01:11:32 > Check network registration
00>
00>
00> +CEREG: 0,0
00>
00> OK
00>
00> 01/01/70 01:11:33 > +CREG: 0 → count 0
00>
00>
00> 01/01/70 01:11:33 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 29,99
00>
00> OK
00> AT+CEREG?
00>
00> 01/01/70 01:11:35 > Check network registration
00>
00>
00> +CEREG: 0,0
00>
00> OK
00>
00> 01/01/70 01:11:35 > +CREG: 0 → count 1
00>
00>
00> 01/01/70 01:11:35 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 31,99
00>
00> OK
00> AT+CEREG?
00>
00> 01/01/70 01:11:37 > Check network registration
00>
00>
00> +CEREG: 0,0
00>
00> OK
00>
00> 01/01/70 01:11:38 > +CREG: 0 → count 2
00>
00>
00> 01/01/70 01:11:38 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 31,99
00>
00> OK
00>
00> 01/01/70 01:11:40 > TRACKER: GET NEW DATA 0->0
00>
00>
00> 01/01/70 01:11:40 > TRACKER: time not synchronized
00>
00> AT+CEREG?
00>
00> 01/01/70 01:11:40 > Check network registration
00>
00>
00> +CEREG: 0,0
00>
00> OK
00>
00> 01/01/70 01:11:40 > +CREG: 0 → count 3
00>
00>
00> 01/01/70 01:11:40 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 31,99
00>
00> OK
00> AT+CEREG?
00>
00> 01/01/70 01:11:42 > Check network registration
00>
00>
00> +CEREG: 0,0
00>
00> OK
00>
00> 01/01/70 01:11:42 > +CREG: 0 → count 4
00>
00>
00> 01/01/70 01:11:42 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 31,99
00>
00> OK
00> AT+CEREG?
00>
00> 01/01/70 01:11:45 > Check network registration
00>
00>
00> +CEREG: 0,0
00>
00> OK
00>
00> 01/01/70 01:11:45 > +CREG: 0 → count 5
00>
00>
00> 01/01/70 01:11:45 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 31,99
00>
00> OK
00> AT+CEREG?
00>
00> 01/01/70 01:11:47 > Check network registration
00>
00>
00> +CEREG: 0,0
00>
00> OK
00>
00> 01/01/70 01:11:47 > +CREG: 0 → count 6
00>
00>
00> 01/01/70 01:11:47 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 31,99
00>
00> OK
00>
00> 01/01/70 01:11:50 > TRACKER: GET NEW DATA 0->0
00>
00>
00> 01/01/70 01:11:50 > TRACKER: time not synchronized
00>
00> AT+CEREG?
00>
00> 01/01/70 01:11:50 > Check network registration
00>
00>
00> +CEREG: 0,0
00>
00> OK
00>
00> 01/01/70 01:11:50 > +CREG: 0 → count 7
00>
00>
00> 01/01/70 01:11:50 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 31,99
00>
00> OK
00> AT+CEREG?
00>
00> 01/01/70 01:11:52 > Check network registration
00>
00>
00> +CEREG: 0,0
00>
00> OK
00>
00> 01/01/70 01:11:53 > +CREG: 0 → count 8
00>
00>
00> 01/01/70 01:11:53 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 31,99
00>
00> OK
00> AT+CEREG?
00>
00> 01/01/70 01:11:55 > Check network registration
00>
00>
00> +CEREG: 0,0
00>
00> OK
00>
00> 01/01/70 01:11:55 > +CREG: 0 → count 9
00>
00>
00> 01/01/70 01:11:55 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 31,99
00>
00> OK
00> AT+CEREG?
00>
00> 01/01/70 01:11:57 > Check network registration
00>
00>
00> +CEREG: 0,3
00>
00> OK
00>
00> 01/01/70 01:11:57 > +CREG: 3 → count 10
00>
00>
00> 01/01/70 01:11:57 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 99,99
00>
00> OK
00>
00> 01/01/70 01:12:00 > TRACKER: GET NEW DATA 0->0
00>
00>
00> 01/01/70 01:12:00 > TRACKER: time not synchronized
00>
00> AT+CEREG?
00>
00> 01/01/70 01:12:00 > Check network registration
00>
00>
00> +CEREG: 0,3
00>
00> OK
00>
00> 01/01/70 01:12:00 > +CREG: 3 → count 11
00>
00>
00> 01/01/70 01:12:00 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 99,99
00>
00> OK
00> AT+CEREG?
00>
00> 01/01/70 01:12:02 > Check network registration
00>
00>
00> +CEREG: 0,3
00>
00> OK
00>
00> 01/01/70 01:12:03 > +CREG: 3 → count 12
00>
00>
00> 01/01/70 01:12:03 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 99,99
00>
00> OK
00> AT+CEREG?
00>
00> 01/01/70 01:12:05 > Check network registration
00>
00>
00> +CEREG: 0,3
00>
00> OK
00>
00> 01/01/70 01:12:05 > +CREG: 3 → count 13
00>
00>
00> 01/01/70 01:12:05 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 99,99
00>
00> OK
00> AT+CEREG?
00>
00> 01/01/70 01:12:07 > Check network registration
00>
00>
00> +CEREG: 0,3
00>
00> OK
00>
00> 01/01/70 01:12:08 > +CREG: 3 → count 14
00>
00>
00> 01/01/70 01:12:08 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 99,99
00>
00> OK
00> AT+CEREG?
00>
00> 01/01/70 01:12:09 > Check network registration
00>
00>
00> +CEREG: 0,3
00>
00> OK
00>
00> 01/01/70 01:12:10 > TRACKER: GET NEW DATA 0->0
00>
00>
00> 01/01/70 01:12:10 > TRACKER: time not synchronized
00>
00>
00> 01/01/70 01:12:10 > +CREG: 3 → count 15
00>
00>
00> 01/01/70 01:12:10 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 99,99
00>
00> OK
00> AT+CEREG?
00>
00> 01/01/70 01:12:12 > Check network registration
00>
00>
00> +CEREG: 0,3
00>
00> OK
00>
00> 01/01/70 01:12:12 > +CREG: 3 → count 16
00>
00>
00> 01/01/70 01:12:12 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 99,99
00>
00> OK
00> AT+CEREG?
00>
00> 01/01/70 01:12:15 > Check network registration
00>
00>
00> +CEREG: 0,3
00>
00> OK
00>
00> 01/01/70 01:12:15 > +CREG: 3 → count 17
00>
00>
00> 01/01/70 01:12:15 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 99,99
00>
00> OK
00> AT+CEREG?
00>
00> 01/01/70 01:12:17 > Check network registration
00>
00>
00> +CEREG: 0,3
00>
00> OK
00>
00> 01/01/70 01:12:18 > +CREG: 3 → count 18
00>
00>
00> 01/01/70 01:12:18 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 99,99
00>
00> OK
00>
00> 01/01/70 01:12:20 > TRACKER: GET NEW DATA 0->0
00>
00>
00> 01/01/70 01:12:20 > TRACKER: time not synchronized
00>
00> AT+CEREG?
00>
00> 01/01/70 01:12:20 > Check network registration
00>
00>
00> +CEREG: 0,3
00>
00> OK
00>
00> 01/01/70 01:12:20 > +CREG: 3 → count 19
00>
00>
00> 01/01/70 01:12:20 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 99,99
00>
00> OK
00> AT+CEREG?
00>
00> 01/01/70 01:12:23 > Check network registration
00>
00>
00> +CEREG: 0,3
00>
00> OK
00>
00> 01/01/70 01:12:23 > +CREG: 3 → count 20
00>
00>
00> 01/01/70 01:12:23 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 99,99
00>
00> OK
00> AT+CEREG?
00>
00> 01/01/70 01:12:24 > Check network registration
00>
00>
00> +CEREG: 0,3
00>
00> OK
00>
00> 01/01/70 01:12:25 > +CREG: 3 → count 21
00>
00>
00> 01/01/70 01:12:25 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 99,99
00>
00> OK
00> AT+CEREG?
00>
00> 01/01/70 01:12:28 > Check network registration
00>
00>
00> +CEREG: 0,3
00>
00> OK
00>
00> 01/01/70 01:12:28 > +CREG: 3 → count 22
00>
00>
00> 01/01/70 01:12:28 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 99,99
00>
00> OK
00>
00> 01/01/70 01:12:30 > TRACKER: GET NEW DATA 0->0
00>
00>
00> 01/01/70 01:12:30 > TRACKER: time not synchronized
00>
00> AT+CEREG?
00>
00> 01/01/70 01:12:30 > Check network registration
00>
00>
00> +CEREG: 0,3
00>
00> OK
00>
00> 01/01/70 01:12:30 > +CREG: 3 → count 23
00>
00>
00> 01/01/70 01:12:30 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 99,99
00>
00> OK
00> AT+CEREG?
00>
00> 01/01/70 01:12:33 > Check network registration
00>
00>
00> +CEREG: 0,3
00>
00> OK
00>
00> 01/01/70 01:12:33 > +CREG: 3 → count 24
00>
00>
00> 01/01/70 01:12:33 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 99,99
00>
00> OK
00> AT+CEREG?
00>
00> 01/01/70 01:12:34 > Check network registration
00>
00>
00> +CEREG: 0,3
00>
00> OK
00>
00> 01/01/70 01:12:35 > +CREG: 3 → count 25
00>
00>
00> 01/01/70 01:12:35 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 99,99
00>
00> OK
00> AT+CEREG?
00>
00> 01/01/70 01:12:38 > Check network registration
00>
00>
00> +CEREG: 0,3
00>
00> OK
00>
00> 01/01/70 01:12:38 > +CREG: 3 → count 26
00>
00>
00> 01/01/70 01:12:38 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 99,99
00>
00> OK
00>
00> 01/01/70 01:12:40 > TRACKER: GET NEW DATA 0->0
00>
00>
00> 01/01/70 01:12:40 > TRACKER: time not synchronized
00>
00> AT+CEREG?
00>
00> 01/01/70 01:12:40 > Check network registration
00>
00>
00> +CEREG: 0,3
00>
00> OK
00>
00> 01/01/70 01:12:40 > +CREG: 3 → count 27
00>
00>
00> 01/01/70 01:12:40 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 99,99
00>
00>
00> OK
00> AT+CEREG?
00>
00> 01/01/70 01:12:43 > Check network registration
00>
00>
00> +CEREG: 0,3
00>
00> OK
00>
00> 01/01/70 01:12:43 > +CREG: 3 → count 28
00>
00>
00> 01/01/70 01:12:43 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 99,99
00>
00> OK
00> AT+CEREG?
00>
00> 01/01/70 01:12:45 > Check network registration
00>
00>
00> +CEREG: 0,0
00>
00> OK
00>
00> 01/01/70 01:12:45 > +CREG: 0 → count 29
00>
00>
00> 01/01/70 01:12:45 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 25,99
00>
00> OK
00> AT+CEREG?
00>
00> 01/01/70 01:12:48 > Check network registration
00>
00>
00> +CEREG: 0,0
00>
00> OK
00>
00> 01/01/70 01:12:48 > +CREG: 0 → count 30
00>
00>
00> 01/01/70 01:12:48 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 25,99
00>
00> OK
00>
00> 01/01/70 01:12:50 > TRACKER: GET NEW DATA 0->0
00>
00>
00> 01/01/70 01:12:50 > TRACKER: time not synchronized
00>
00> AT+CEREG?
00>
00> 01/01/70 01:12:50 > Check network registration
00>
00>
00> +CEREG: 0,0
00>
00> OK
00>
00> 01/01/70 01:12:50 > +CREG: 0 → count 31
00>
00>
00> 01/01/70 01:12:50 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 26,99
00>
00> OK
00> AT+CEREG?
00>
00> 01/01/70 01:12:52 > Check network registration
00>
00>
00> +CEREG: 0,0
00>
00> OK
00>
00> 01/01/70 01:12:52 > +CREG: 0 → count 32
00>
00>
00> 01/01/70 01:12:52 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 26,99
00>
00> OK
00> AT+CEREG?
00>
00> 01/01/70 01:12:54 > Check network registration
00>
00>
00> +CEREG: 0,0
00>
00> OK
00>
00> 01/01/70 01:12:54 > +CREG: 0 → count 33
00>
00>
00> 01/01/70 01:12:54 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 26,99
00>
00> OK
00> AT+CEREG?
00>
00> 01/01/70 01:12:57 > Check network registration
00>
00>
00> +CEREG: 0,0
00>
00> OK
00>
00> 01/01/70 01:12:57 > +CREG: 0 → count 34
00>
00>
00> 01/01/70 01:12:57 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 26,99
00>
00> OK
00>
00> 01/01/70 01:13:00 > TRACKER: GET NEW DATA 0->0
00>
00>
00> 01/01/70 01:13:00 > TRACKER: time not synchronized
00>
00> AT+CEREG?
00>
00> 01/01/70 01:13:00 > Check network registration
00>
00>
00> +CEREG: 0,0
00>
00> OK
00>
00> 01/01/70 01:13:00 > +CREG: 0 → count 35
00>
00>
00> 01/01/70 01:13:00 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 26,99
00>
00> OK
00> AT+CEREG?
00>
00> 01/01/70 01:13:03 > Check network registration
00>
00>
00> +CEREG: 0,0
00>
00> OK
00>
00> 01/01/70 01:13:03 > +CREG: 0 → count 36
00>
00>
00> 01/01/70 01:13:03 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 26,99
00>
00> OK
00> AT+CEREG?
00>
00> 01/01/70 01:13:04 > Check network registration
00>
00>
00> +CEREG: 0,0
00>
00> OK
00>
00> 01/01/70 01:13:04 > +CREG: 0 → count 37
00>
00>
00> 01/01/70 01:13:04 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 26,99
00>
00> OK
00> AT+CEREG?
00>
00> 01/01/70 01:13:08 > Check network registration
00>
00>
00> +CEREG: 0,0
00>
00> OK
00>
00> 01/01/70 01:13:08 > +CREG: 0 → count 38
00>
00>
00> 01/01/70 01:13:08 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 26,99
00>
00> OK
00>
00> 01/01/70 01:13:10 > TRACKER: GET NEW DATA 0->0
00>
00>
00> 01/01/70 01:13:10 > TRACKER: time not synchronized
00>
00> AT+CEREG?
00>
00> 01/01/70 01:13:10 > Check network registration
00>
00>
00> +CEREG: 0,0
00>
00> OK
00>
00> 01/01/70 01:13:10 > +CREG: 0 → count 39
00>
00>
00> 01/01/70 01:13:10 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 26,99
00>
00> OK
00> AT+CEREG?
00>
00> 01/01/70 01:13:13 > Check network registration
00>
00>
00> +CEREG: 0,0
00>
00> OK
00>
00> 01/01/70 01:13:13 > +CREG: 0 → count 40
00>
00>
00> 01/01/70 01:13:13 > Signal Quality Report
00>
00> AT+CSQ
00>
00> +CSQ: 26,99
00>
00> OK
00> AT+CEREG?
00> AT+CEREG?