HL7800 +cereg: 5,3,,,,0,0

IoT Modules HL78
1

Hello.

Some of our devices running HL7800 are having troubles connecting. It runs the same SIMs and configs as other devices, but for some reason sometimes the registration is denied with a seemingly weird cause? Attaching the CEREG log of a power cycle:

11729 - 
11730 - +CEREG: 2
11738 - AT+CEREG=5
11741 - 
11742 - OK
11748 - AT+CEREG?
11750 - 
11751 - +CEREG: 5,2
11751 - 
11751 - OK
11794 - 
11795 - +SIM: 0
12759 - AT+CEREG?
12762 - 
12763 - +CEREG: 5,2
12763 - 
12763 - OK
13513 - 
13514 - +CEREG: 0
13523 - 
13524 - +CEREG: 2
13769 - AT+CEREG?
13772 - 
13773 - +CEREG: 5,2
13773 - 
13773 - OK
14780 - AT+CEREG?
14782 - 
14783 - +CEREG: 5,2
14783 - 
14784 - OK
15790 - AT+CEREG?
15792 - 
15793 - +CEREG: 5,2
15794 - 
15794 - OK
16801 - AT+CEREG?
16803 - 
16804 - +CEREG: 5,2
16804 - 
16804 - OK
17811 - AT+CEREG?
17813 - 
17814 - +CEREG: 5,2
17814 - 
17815 - OK
18822 - AT+CEREG?
18824 - 
18825 - +CEREG: 5,2
18825 - 
18826 - OK
19832 - AT+CEREG?
19834 - 
19836 - +CEREG: 5,2
19836 - 
19836 - OK
20843 - AT+CEREG?
20845 - 
20846 - +CEREG: 5,2
20846 - 
20846 - OK
21853 - AT+CEREG?
21853 - 
21856 - +CEREG: 5,2
21856 - 
21856 - OK
22198 - 
22199 - +CEREG: 0
22221 - 
22222 - +CEREG: 0
22864 - AT+CEREG?
22866 - 
22867 - +CEREG: 5,0
22868 - 
22868 - OK
23874 - AT+CEREG?
23874 - 
23877 - +CEREG: 5,0
23878 - 
23878 - OK
24885 - AT+CEREG?
24887 - 
24888 - +CEREG: 5,0
24888 - 
24888 - OK
25896 - AT+CEREG?
25896 - 
25898 - +CEREG: 5,0
25898 - 
25898 - OK
26906 - AT+CEREG?
26908 - 
26909 - +CEREG: 5,0
26909 - 
26910 - OK
27917 - AT+CEREG?
27917 - 
27919 - +CEREG: 5,0
27919 - 
27919 - OK
28927 - AT+CEREG?
28929 - 
28930 - +CEREG: 5,0
28930 - 
28931 - OK
29938 - AT+CEREG?
29938 - 
29940 - +CEREG: 5,0
29940 - 
29940 - OK
30948 - AT+CEREG?
30950 - 
30951 - +CEREG: 5,0
30951 - 
30952 - OK
31959 - AT+CEREG?
31961 - 
31962 - +CEREG: 5,0
31962 - 
31962 - OK
32201 - 
32202 - +CEREG: 2
32969 - AT+CEREG?
32972 - 
32973 - +CEREG: 5,2
32973 - 
32973 - OK
33980 - AT+CEREG?
33982 - 
33983 - +CEREG: 5,2
33983 - 
33983 - OK
34990 - AT+CEREG?
34992 - 
34993 - +CEREG: 5,2
34993 - 
34993 - OK
36001 - AT+CEREG?
36003 - 
36004 - +CEREG: 5,2
36004 - 
36005 - OK
37011 - AT+CEREG?
37014 - 
37015 - +CEREG: 5,2
37015 - 
37015 - OK
38022 - AT+CEREG?
38024 - 
38025 - +CEREG: 5,2
38025 - 
38026 - OK
39032 - AT+CEREG?
39032 - 
39035 - +CEREG: 5,2
39036 - 
39036 - OK
40043 - AT+CEREG?
40045 - 
40046 - +CEREG: 5,2
40046 - 
40047 - OK
41053 - AT+CEREG?
41056 - 
41057 - +CEREG: 5,2
41057 - 
41057 - OK
42064 - AT+CEREG?
42066 - 
42067 - +CEREG: 5,2
42067 - 
42068 - OK
43075 - AT+CEREG?
43077 - 
43078 - +CEREG: 5,2
43078 - 
43078 - OK
44085 - AT+CEREG?
44087 - 
44088 - +CEREG: 5,2
44088 - 
44089 - OK
44757 - 
44758 - +CEREG: 3,,,,0,0
44781 - 
44782 - +CEREG: 3,,,,0,0
45096 - AT+CEREG?
45098 - 
45099 - +CEREG: 5,3,,,,0,0
45099 - 
45099 - OK
46106 - AT+CEREG?
46108 - 
46109 - +CEREG: 5,3,,,,0,0
46109 - 
46109 - OK
47117 - AT+CEREG?
47117 - 
47119 - +CEREG: 5,3,,,,0,0
47119 - 
47121 - OK
48127 - AT+CEREG?
48129 - 
48130 - +CEREG: 5,3,,,,0,0
48130 - 
48130 - OK
49138 - AT+CEREG?
49140 - 
49141 - +CEREG: 5,3,,,,0,0
49142 - 
49142 - OK
50148 - AT+CEREG?
50150 - 
50151 - +CEREG: 5,3,,,,0,0
50151 - 
50151 - OK
51159 - AT+CEREG?
51161 - 
51162 - +CEREG: 5,3,,,,0,0
51162 - 
51162 - OK
52169 - AT+CEREG?
52169 - 
52172 - +CEREG: 5,3,,,,0,0
52172 - 
52174 - OK
53180 - AT+CEREG?
53182 - 
53183 - +CEREG: 5,3,,,,0,0
53183 - 
53183 - OK
54190 - AT+CEREG?
54190 - 
54193 - +CEREG: 5,3,,,,0,0
54193 - 
54195 - OK
54760 - 
54761 - +CEREG: 2
55201 - AT+CEREG?
55203 - 
55204 - +CEREG: 5,2
55204 - 
55204 - OK
56211 - AT+CEREG?
56214 - 
56215 - +CEREG: 5,2
56215 - 
56215 - OK
57222 - AT+CEREG?
57224 - 
57225 - +CEREG: 5,2
57225 - 
57226 - OK
58233 - AT+CEREG?
58235 - 
58236 - +CEREG: 5,2
58236 - 
58236 - OK
59243 - AT+CEREG?
59245 - 
59246 - +CEREG: 5,2
59247 - 
59247 - OK
60254 - AT+CEREG?
60256 - 
60257 - +CEREG: 5,2
60257 - 
60257 - OK
61264 - AT+CEREG?
61266 - 
61267 - +CEREG: 5,2
61267 - 
61268 - OK
62275 - AT+CEREG?
62277 - 
62278 - +CEREG: 5,2
62278 - 
62278 - OK
63285 - AT+CEREG?
63287 - 
63288 - +CEREG: 5,2
63288 - 
63289 - OK
63476 - 
63477 - +CEREG: 3,,,,0,0
63501 - 
63502 - +CEREG: 3,,,,0,0
64296 - AT+CEREG?
64298 - 
64299 - +CEREG: 5,3,,,,0,0
64299 - 
64299 - OK
65306 - AT+CEREG?
65308 - 
65309 - +CEREG: 5,3,,,,0,0
65309 - 
65309 - OK
66317 - AT+CEREG?
66319 - 
66320 - +CEREG: 5,3,,,,0,0
66320 - 
66321 - OK
67327 - AT+CEREG?
67329 - 
67331 - +CEREG: 5,3,,,,0,0
67331 - 
67332 - OK
68338 - AT+CEREG?
68340 - 
68341 - +CEREG: 5,3,,,,0,0
68341 - 
68341 - OK
69348 - AT+CEREG?
69350 - 
69351 - +CEREG: 5,3,,,,0,0
69351 - 
69353 - OK
70359 - AT+CEREG?
70361 - 
70362 - +CEREG: 5,3,,,,0,0
70363 - 
70363 - OK
71369 - AT+CCLK?
71371 - 
71372 - +CCLK: "00/00/00,00:00:00-00"
71372 - 
71372 - OK
71380 - AT+COPS?
71381 - 
71382 - +COPS: 0
71382 - 
71382 - OK
71390 - AT+CSQ
71391 - 
71392 - +CSQ: 27,99
71392 - 
71392 - OK
71400 - AT+CGPADDR
71400 - 
71400 - 
71400 - OK
71410 - AT+CEREG=5
71413 - 
71413 - OK
71420 - AT+CEREG?
71422 - 
71423 - +CEREG: 5,3,,,,0,0
71423 - 
71423 - OK
73480 - 
73481 - +CEREG: 2
85315 - 
85316 - +CEREG: 3,,,,0,0
85340 - 
85341 - +CEREG: 3,,,,0,0
86429 - AT
86429 - 
86431 - OK
86439 - AT+CPWROFF
86449 - 
86450 - OK
86450 -

Does anyone know what is causing this issue? Or at the very least, what the problem with registration is?
I can’t see any differences between this and a working unit. Usually it finally manages to register after a few restarts.

2

Which firmware are you using?

I can see there is “SIM:0”, did you remove the sim card?
Could it be the sim slot hardware problem?

3

This is using HL7800.4.4.6

Good catch about the SIM:0. Did not notice this. No the SIM card was not removed and the device was left untouched during these logs.

Inserting here a log from a successful registration, that also includes SIM:0 yet it works fine.

807790 - 2023-09-28T11:42:31.797 - +CEREG: 2
807794 - 2023-09-28T11:42:31.801 - AT+CEREG=5
807797 - 2023-09-28T11:42:31.804 - 
807798 - 2023-09-28T11:42:31.805 - OK
807805 - 2023-09-28T11:42:31.812 - AT+CEREG?
807807 - 2023-09-28T11:42:31.814 - 
807808 - 2023-09-28T11:42:31.815 - +CEREG: 5,2
807808 - 2023-09-28T11:42:31.815 - 
807808 - 2023-09-28T11:42:31.815 - OK
807867 - 2023-09-28T11:42:31.874 - 
807868 - 2023-09-28T11:42:31.875 - +SIM: 0
808815 - 2023-09-28T11:42:32.822 - AT+CEREG?
808818 - 2023-09-28T11:42:32.825 - 
808819 - 2023-09-28T11:42:32.826 - +CEREG: 5,2
808819 - 2023-09-28T11:42:32.826 - 
808820 - 2023-09-28T11:42:32.827 - OK
809826 - 2023-09-28T11:42:33.833 - AT+CEREG?
809828 - 2023-09-28T11:42:33.835 - 
809829 - 2023-09-28T11:42:33.836 - +CEREG: 5,2
809829 - 2023-09-28T11:42:33.836 - 
809830 - 2023-09-28T11:42:33.837 - OK
810836 - 2023-09-28T11:42:34.843 - AT+CEREG?
810838 - 2023-09-28T11:42:34.845 - 
810839 - 2023-09-28T11:42:34.846 - +CEREG: 5,2
810839 - 2023-09-28T11:42:34.846 - 
810840 - 2023-09-28T11:42:34.847 - OK
811847 - 2023-09-28T11:42:35.854 - AT+CEREG?
811847 - 2023-09-28T11:42:35.854 - 
811849 - 2023-09-28T11:42:35.856 - +CEREG: 5,2
811849 - 2023-09-28T11:42:35.856 - 
811850 - 2023-09-28T11:42:35.857 - OK
812857 - 2023-09-28T11:42:36.864 - AT+CEREG?
812859 - 2023-09-28T11:42:36.866 - 
812860 - 2023-09-28T11:42:36.867 - +CEREG: 5,2
812860 - 2023-09-28T11:42:36.867 - 
812860 - 2023-09-28T11:42:36.867 - OK
813868 - 2023-09-28T11:42:37.875 - AT+CEREG?
813868 - 2023-09-28T11:42:37.875 - 
813870 - 2023-09-28T11:42:37.877 - +CEREG: 5,2
813870 - 2023-09-28T11:42:37.877 - 
813871 - 2023-09-28T11:42:37.878 - OK
814878 - 2023-09-28T11:42:38.885 - AT+CEREG?
814880 - 2023-09-28T11:42:38.887 - 
814881 - 2023-09-28T11:42:38.888 - +CEREG: 5,2
814881 - 2023-09-28T11:42:38.888 - 
814882 - 2023-09-28T11:42:38.889 - OK
815889 - 2023-09-28T11:42:39.896 - AT+CEREG?
815889 - 2023-09-28T11:42:39.896 - 
815891 - 2023-09-28T11:42:39.898 - +CEREG: 5,2
815892 - 2023-09-28T11:42:39.899 - 
815892 - 2023-09-28T11:42:39.899 - OK
816899 - 2023-09-28T11:42:40.906 - AT+CEREG?
816901 - 2023-09-28T11:42:40.908 - 
816902 - 2023-09-28T11:42:40.909 - +CEREG: 5,2
816902 - 2023-09-28T11:42:40.909 - 
816903 - 2023-09-28T11:42:40.910 - OK
817910 - 2023-09-28T11:42:41.917 - AT+CEREG?
817910 - 2023-09-28T11:42:41.917 - 
817912 - 2023-09-28T11:42:41.919 - +CEREG: 5,2
817913 - 2023-09-28T11:42:41.920 - 
817913 - 2023-09-28T11:42:41.920 - OK
818920 - 2023-09-28T11:42:42.927 - AT+CEREG?
818922 - 2023-09-28T11:42:42.929 - 
818923 - 2023-09-28T11:42:42.930 - +CEREG: 5,2
818923 - 2023-09-28T11:42:42.930 - 
818923 - 2023-09-28T11:42:42.930 - OK
819931 - 2023-09-28T11:42:43.938 - AT+CEREG?
819931 - 2023-09-28T11:42:43.938 - 
819933 - 2023-09-28T11:42:43.940 - +CEREG: 5,2
819934 - 2023-09-28T11:42:43.941 - 
819934 - 2023-09-28T11:42:43.941 - OK
820941 - 2023-09-28T11:42:44.948 - AT+CEREG?
820943 - 2023-09-28T11:42:44.950 - 
820944 - 2023-09-28T11:42:44.951 - +CEREG: 5,2
820944 - 2023-09-28T11:42:44.951 - 
820944 - 2023-09-28T11:42:44.951 - OK
821952 - 2023-09-28T11:42:45.959 - AT+CEREG?
821952 - 2023-09-28T11:42:45.959 - 
821954 - 2023-09-28T11:42:45.961 - +CEREG: 5,2
821954 - 2023-09-28T11:42:45.961 - 
821954 - 2023-09-28T11:42:45.961 - OK
822962 - 2023-09-28T11:42:46.969 - AT+CEREG?
822962 - 2023-09-28T11:42:46.969 - 
822965 - 2023-09-28T11:42:46.972 - +CEREG: 5,2
822965 - 2023-09-28T11:42:46.972 - 
822966 - 2023-09-28T11:42:46.973 - OK
823973 - 2023-09-28T11:42:47.980 - AT+CEREG?
823975 - 2023-09-28T11:42:47.982 - 
823976 - 2023-09-28T11:42:47.983 - +CEREG: 5,2
823976 - 2023-09-28T11:42:47.983 - 
823976 - 2023-09-28T11:42:47.983 - OK
824984 - 2023-09-28T11:42:48.991 - AT+CEREG?
824984 - 2023-09-28T11:42:48.991 - 
824986 - 2023-09-28T11:42:48.993 - +CEREG: 5,2
824986 - 2023-09-28T11:42:48.993 - 
824987 - 2023-09-28T11:42:48.994 - OK
825994 - 2023-09-28T11:42:50.001 - AT+CEREG?
825996 - 2023-09-28T11:42:50.003 - 
825997 - 2023-09-28T11:42:50.004 - +CEREG: 5,2
825997 - 2023-09-28T11:42:50.004 - 
825997 - 2023-09-28T11:42:50.004 - OK
827005 - 2023-09-28T11:42:51.012 - AT+CEREG?
827005 - 2023-09-28T11:42:51.012 - 
827007 - 2023-09-28T11:42:51.014 - +CEREG: 5,2
827007 - 2023-09-28T11:42:51.014 - 
827008 - 2023-09-28T11:42:51.015 - OK
828015 - 2023-09-28T11:42:52.022 - AT+CEREG?
828017 - 2023-09-28T11:42:52.024 - 
828018 - 2023-09-28T11:42:52.025 - +CEREG: 5,2
828018 - 2023-09-28T11:42:52.025 - 
828018 - 2023-09-28T11:42:52.025 - OK
829026 - 2023-09-28T11:42:53.033 - AT+CEREG?
829026 - 2023-09-28T11:42:53.033 - 
829028 - 2023-09-28T11:42:53.035 - +CEREG: 5,2
829028 - 2023-09-28T11:42:53.035 - 
829029 - 2023-09-28T11:42:53.036 - OK
830036 - 2023-09-28T11:42:54.043 - AT+CEREG?
830038 - 2023-09-28T11:42:54.045 - 
830039 - 2023-09-28T11:42:54.046 - +CEREG: 5,2
830039 - 2023-09-28T11:42:54.046 - 
830039 - 2023-09-28T11:42:54.046 - OK
831047 - 2023-09-28T11:42:55.054 - AT+CEREG?
831047 - 2023-09-28T11:42:55.054 - 
831049 - 2023-09-28T11:42:55.056 - +CEREG: 5,2
831049 - 2023-09-28T11:42:55.056 - 
831049 - 2023-09-28T11:42:55.056 - OK
832057 - 2023-09-28T11:42:56.064 - AT+CEREG?
832059 - 2023-09-28T11:42:56.066 - 
832060 - 2023-09-28T11:42:56.067 - +CEREG: 5,2
832060 - 2023-09-28T11:42:56.067 - 
832060 - 2023-09-28T11:42:56.067 - OK
833068 - 2023-09-28T11:42:57.075 - AT+CEREG?
833068 - 2023-09-28T11:42:57.075 - 
833070 - 2023-09-28T11:42:57.077 - +CEREG: 5,2
833071 - 2023-09-28T11:42:57.078 - 
833071 - 2023-09-28T11:42:57.078 - OK
834078 - 2023-09-28T11:42:58.085 - AT+CEREG?
834080 - 2023-09-28T11:42:58.087 - 
834081 - 2023-09-28T11:42:58.088 - +CEREG: 5,2
834081 - 2023-09-28T11:42:58.088 - 
834082 - 2023-09-28T11:42:58.089 - OK
835089 - 2023-09-28T11:42:59.096 - AT+CEREG?
835089 - 2023-09-28T11:42:59.096 - 
835091 - 2023-09-28T11:42:59.098 - +CEREG: 5,2
835092 - 2023-09-28T11:42:59.099 - 
835092 - 2023-09-28T11:42:59.099 - OK
836099 - 2023-09-28T11:43:00.106 - AT+CEREG?
836101 - 2023-09-28T11:43:00.108 - 
836102 - 2023-09-28T11:43:00.109 - +CEREG: 5,2
836102 - 2023-09-28T11:43:00.109 - 
836103 - 2023-09-28T11:43:00.110 - OK
837110 - 2023-09-28T11:43:01.117 - AT+CEREG?
837110 - 2023-09-28T11:43:01.117 - 
837112 - 2023-09-28T11:43:01.119 - +CEREG: 5,2
837112 - 2023-09-28T11:43:01.119 - 
837112 - 2023-09-28T11:43:01.119 - OK
838120 - 2023-09-28T11:43:02.127 - AT+CEREG?
838120 - 2023-09-28T11:43:02.127 - 
838123 - 2023-09-28T11:43:02.130 - +CEREG: 5,2
838123 - 2023-09-28T11:43:02.130 - 
838124 - 2023-09-28T11:43:02.131 - OK
839131 - 2023-09-28T11:43:03.138 - AT+CEREG?
839133 - 2023-09-28T11:43:03.140 - 
839134 - 2023-09-28T11:43:03.141 - +CEREG: 5,2
839134 - 2023-09-28T11:43:03.141 - 
839134 - 2023-09-28T11:43:03.141 - OK
840142 - 2023-09-28T11:43:04.149 - AT+CEREG?
840142 - 2023-09-28T11:43:04.149 - 
840144 - 2023-09-28T11:43:04.151 - +CEREG: 5,2
840144 - 2023-09-28T11:43:04.151 - 
840145 - 2023-09-28T11:43:04.152 - OK
841152 - 2023-09-28T11:43:05.159 - AT+CEREG?
841154 - 2023-09-28T11:43:05.161 - 
841155 - 2023-09-28T11:43:05.162 - +CEREG: 5,2
841155 - 2023-09-28T11:43:05.162 - 
841156 - 2023-09-28T11:43:05.163 - OK
842163 - 2023-09-28T11:43:06.170 - AT+CEREG?
842163 - 2023-09-28T11:43:06.170 - 
842165 - 2023-09-28T11:43:06.172 - +CEREG: 5,2
842165 - 2023-09-28T11:43:06.172 - 
842166 - 2023-09-28T11:43:06.173 - OK
843173 - 2023-09-28T11:43:07.180 - AT+CEREG?
843175 - 2023-09-28T11:43:07.182 - 
843176 - 2023-09-28T11:43:07.183 - +CEREG: 5,2
843176 - 2023-09-28T11:43:07.183 - 
843176 - 2023-09-28T11:43:07.183 - OK
844184 - 2023-09-28T11:43:08.191 - AT+CEREG?
844184 - 2023-09-28T11:43:08.191 - 
844186 - 2023-09-28T11:43:08.193 - +CEREG: 5,2
844186 - 2023-09-28T11:43:08.193 - 
844187 - 2023-09-28T11:43:08.194 - OK
845194 - 2023-09-28T11:43:09.201 - AT+CEREG?
845196 - 2023-09-28T11:43:09.203 - 
845197 - 2023-09-28T11:43:09.204 - +CEREG: 5,2
845197 - 2023-09-28T11:43:09.204 - 
845197 - 2023-09-28T11:43:09.204 - OK
846205 - 2023-09-28T11:43:10.212 - AT+CEREG?
846205 - 2023-09-28T11:43:10.212 - 
846207 - 2023-09-28T11:43:10.214 - +CEREG: 5,2
846208 - 2023-09-28T11:43:10.215 - 
846208 - 2023-09-28T11:43:10.215 - OK
847215 - 2023-09-28T11:43:11.222 - AT+CEREG?
847217 - 2023-09-28T11:43:11.224 - 
847218 - 2023-09-28T11:43:11.225 - +CEREG: 5,2
847218 - 2023-09-28T11:43:11.225 - 
847219 - 2023-09-28T11:43:11.226 - OK
848226 - 2023-09-28T11:43:12.233 - AT+CEREG?
848228 - 2023-09-28T11:43:12.235 - 
848229 - 2023-09-28T11:43:12.236 - +CEREG: 5,2
848229 - 2023-09-28T11:43:12.236 - 
848229 - 2023-09-28T11:43:12.236 - OK
849236 - 2023-09-28T11:43:13.243 - AT+CEREG?
849238 - 2023-09-28T11:43:13.245 - 
849239 - 2023-09-28T11:43:13.246 - +CEREG: 5,2
849240 - 2023-09-28T11:43:13.247 - 
849240 - 2023-09-28T11:43:13.247 - OK
850247 - 2023-09-28T11:43:14.254 - AT+CEREG?
850247 - 2023-09-28T11:43:14.254 - 
850249 - 2023-09-28T11:43:14.256 - +CEREG: 5,2
850250 - 2023-09-28T11:43:14.257 - 
850250 - 2023-09-28T11:43:14.257 - OK
851257 - 2023-09-28T11:43:15.264 - AT+CEREG?
851259 - 2023-09-28T11:43:15.266 - 
851260 - 2023-09-28T11:43:15.267 - +CEREG: 5,2
851260 - 2023-09-28T11:43:15.267 - 
851261 - 2023-09-28T11:43:15.268 - OK
852268 - 2023-09-28T11:43:16.275 - AT+CEREG?
852268 - 2023-09-28T11:43:16.275 - 
852270 - 2023-09-28T11:43:16.277 - +CEREG: 5,2
852270 - 2023-09-28T11:43:16.277 - 
852270 - 2023-09-28T11:43:16.277 - OK
853278 - 2023-09-28T11:43:17.285 - AT+CEREG?
853278 - 2023-09-28T11:43:17.285 - 
853281 - 2023-09-28T11:43:17.288 - +CEREG: 5,2
853281 - 2023-09-28T11:43:17.288 - 
853282 - 2023-09-28T11:43:17.289 - OK
854289 - 2023-09-28T11:43:18.296 - AT+CEREG?
854291 - 2023-09-28T11:43:18.298 - 
854292 - 2023-09-28T11:43:18.299 - +CEREG: 5,2
854292 - 2023-09-28T11:43:18.299 - 
854292 - 2023-09-28T11:43:18.299 - OK
855300 - 2023-09-28T11:43:19.307 - AT+CEREG?
855300 - 2023-09-28T11:43:19.307 - 
855302 - 2023-09-28T11:43:19.309 - +CEREG: 5,2
855303 - 2023-09-28T11:43:19.310 - 
855303 - 2023-09-28T11:43:19.310 - OK
856310 - 2023-09-28T11:43:20.317 - AT+CEREG?
856312 - 2023-09-28T11:43:20.319 - 
856313 - 2023-09-28T11:43:20.320 - +CEREG: 5,2
856313 - 2023-09-28T11:43:20.320 - 
856314 - 2023-09-28T11:43:20.321 - OK
856654 - 2023-09-28T11:43:20.661 - 
856655 - 2023-09-28T11:43:20.662 - +CEREG: 0
856664 - 2023-09-28T11:43:20.671 - 
856665 - 2023-09-28T11:43:20.672 - +CEREG: 2
857321 - 2023-09-28T11:43:21.328 - AT+CEREG?
857323 - 2023-09-28T11:43:21.330 - 
857324 - 2023-09-28T11:43:21.331 - +CEREG: 5,2
857324 - 2023-09-28T11:43:21.331 - 
857325 - 2023-09-28T11:43:21.332 - OK
858331 - 2023-09-28T11:43:22.338 - AT+CEREG?
858333 - 2023-09-28T11:43:22.340 - 
858334 - 2023-09-28T11:43:22.341 - +CEREG: 5,2
858334 - 2023-09-28T11:43:22.341 - 
858335 - 2023-09-28T11:43:22.342 - OK
859342 - 2023-09-28T11:43:23.349 - AT+CEREG?
859344 - 2023-09-28T11:43:23.351 - 
859345 - 2023-09-28T11:43:23.352 - +CEREG: 5,2
859345 - 2023-09-28T11:43:23.352 - 
859345 - 2023-09-28T11:43:23.352 - OK
860352 - 2023-09-28T11:43:24.359 - AT+CEREG?
860354 - 2023-09-28T11:43:24.361 - 
860355 - 2023-09-28T11:43:24.362 - +CEREG: 5,2
860355 - 2023-09-28T11:43:24.362 - 
860356 - 2023-09-28T11:43:24.363 - OK
861363 - 2023-09-28T11:43:25.370 - AT+CEREG?
861365 - 2023-09-28T11:43:25.372 - 
861366 - 2023-09-28T11:43:25.373 - +CEREG: 5,2
861366 - 2023-09-28T11:43:25.373 - 
861366 - 2023-09-28T11:43:25.373 - OK
862373 - 2023-09-28T11:43:26.380 - AT+CEREG?
862375 - 2023-09-28T11:43:26.382 - 
862376 - 2023-09-28T11:43:26.383 - +CEREG: 5,2
862376 - 2023-09-28T11:43:26.383 - 
862376 - 2023-09-28T11:43:26.383 - OK
863384 - 2023-09-28T11:43:27.391 - AT+CEREG?
863386 - 2023-09-28T11:43:27.393 - 
863387 - 2023-09-28T11:43:27.394 - +CEREG: 5,2
863387 - 2023-09-28T11:43:27.394 - 
863388 - 2023-09-28T11:43:27.395 - OK
864394 - 2023-09-28T11:43:28.401 - AT+CEREG?
864396 - 2023-09-28T11:43:28.403 - 
864398 - 2023-09-28T11:43:28.405 - +CEREG: 5,2
864398 - 2023-09-28T11:43:28.405 - 
864398 - 2023-09-28T11:43:28.405 - OK
865337 - 2023-09-28T11:43:29.344 - 
865338 - 2023-09-28T11:43:29.345 - +CEREG: 0
865362 - 2023-09-28T11:43:29.369 - 
865363 - 2023-09-28T11:43:29.370 - +CEREG: 0
865405 - 2023-09-28T11:43:29.412 - AT+CEREG?
865407 - 2023-09-28T11:43:29.414 - 
865408 - 2023-09-28T11:43:29.415 - +CEREG: 5,0
865408 - 2023-09-28T11:43:29.415 - 
865409 - 2023-09-28T11:43:29.416 - OK
866415 - 2023-09-28T11:43:30.422 - AT+CEREG?
866417 - 2023-09-28T11:43:30.424 - 
866419 - 2023-09-28T11:43:30.426 - +CEREG: 5,0
866419 - 2023-09-28T11:43:30.426 - 
866419 - 2023-09-28T11:43:30.426 - OK
867426 - 2023-09-28T11:43:31.433 - AT+CCLK?
867426 - 2023-09-28T11:43:31.433 - 
867428 - 2023-09-28T11:43:31.435 - +CCLK: "00/00/00,00:00:00-00"
867428 - 2023-09-28T11:43:31.435 - 
867431 - 2023-09-28T11:43:31.438 - OK
867436 - 2023-09-28T11:43:31.443 - AT+COPS?
867438 - 2023-09-28T11:43:31.445 - 
867438 - 2023-09-28T11:43:31.445 - +COPS: 0
867439 - 2023-09-28T11:43:31.446 - 
867439 - 2023-09-28T11:43:31.446 - OK
867446 - 2023-09-28T11:43:31.453 - AT+CSQ
867446 - 2023-09-28T11:43:31.453 - 
867448 - 2023-09-28T11:43:31.455 - +CSQ: 26,99
867448 - 2023-09-28T11:43:31.455 - 
867449 - 2023-09-28T11:43:31.456 - OK
867456 - 2023-09-28T11:43:31.463 - AT+CGPADDR
867458 - 2023-09-28T11:43:31.465 - 
867458 - 2023-09-28T11:43:31.465 - 
867458 - 2023-09-28T11:43:31.465 - OK
867467 - 2023-09-28T11:43:31.474 - AT+CEREG=5
867469 - 2023-09-28T11:43:31.476 - 
867469 - 2023-09-28T11:43:31.476 - OK
867477 - 2023-09-28T11:43:31.484 - AT+CEREG?
867479 - 2023-09-28T11:43:31.486 - 
867480 - 2023-09-28T11:43:31.487 - +CEREG: 5,0
867480 - 2023-09-28T11:43:31.487 - 
867480 - 2023-09-28T11:43:31.487 - OK
875341 - 2023-09-28T11:43:39.348 - 
875342 - 2023-09-28T11:43:39.349 - +CEREG: 2
878753 - 2023-09-28T11:43:42.760 - 
878754 - 2023-09-28T11:43:42.761 - +CEREG: 5,"859A","05192A17",7
878786 - 2023-09-28T11:43:42.793 - AT+COPS=3,2
878998 - 2023-09-28T11:43:43.005 - 
878998 - 2023-09-28T11:43:43.005 - OK
879007 - 2023-09-28T11:43:43.014 - AT+COPS?
879008 - 2023-09-28T11:43:43.015 - 
879009 - 2023-09-28T11:43:43.016 - +COPS: 0,2,"24007",7```
4

Missed the SIM:0 in the successful log. But yea, even the successful registration seems to have this, so it can’t be the cause

5

Do you see problem in newer firmware?

Do you need to set up correct APN in at+cgdcont?

6

Not sure unfortunately.
I don’t have time to update the FW right now and my vacation starts tomorrow. I will have to get back to this in a week

7

Could this happen because of bad signal? Or even worse, because of multiple signals through diverse antennas?

I just tried starting 3 of these problematic units outside, and they successfully registered. Unfortunately I couldn’t read their logs, but they did report to the server…
The error log seems too weird for this simple explanation

8

Strange that bad signal will get network deny