Sorry, how can I do that? I can access system log...

Below is a copy/paste from 3ginfo-lite.
I know that there is a 5th CA band, n78 - but 3ginfo-lite only displays 4...

Cell / Signal Information
MCC MNC    234 30
Cell ID    3956225 (3C5E01)
TAC    26251 (668B)
LAC    26251 (668B)
CSQ
(Signal Strength)
RSSI
(Received Signal Strength Indicator)
RSRP
(Reference Signal Receive Power)
SINR
(Signal to Interference plus Noise Ratio)
RSRQ
(Reference Signal Received Quality)
Primary band (PCC) | PCI & EARFCN    B3 (1800 MHz) @20 MHz | 388 1617
CA band (SCC1)    B1 (2100 MHz) @20 MHz | 204 497
CA band (SCC2)    B3 (1800 MHz) @20 MHz | 388 1815
CA band (SCC3)    n78 (3500 MHz) @40 MHz | 521 646080
CA band (SCC4)    n78 (3500 MHz) @40 MHz | 1 636768

BTS Search

I just realised, you meant this:

+QNWINFO: "FDD LTE","23430","LTE BAND 3",1617
+QNWINFO: "TDD NR5G","23430","NR5G BAND 78",646080

+QCAINFO: "PCC",1617,100,"LTE BAND 3",1,388,-80,-9,-51,18
+QCAINFO: "SCC",497,100,"LTE BAND 1",1,204,-88,-10,-70,19,0,-,-
+QCAINFO: "SCC",1815,100,"LTE BAND 3",1,388,-89,-9,-71,22,0,-,-
+QCAINFO: "SCC",646080,6,"NR5G BAND 78",521
+QCAINFO: "SCC",636768,6,"NR5G BAND 78",1,521,0,-,-

+QENG: "servingcell","NOCONN"
+QENG: "LTE","FDD",234,30,3C5E01,388,1617,3,5,5,668B,-80,-9,-51,19,11,100,-
+QENG: "NR5G-NSA",234,30,521,-95,25,-10,646080,78,6,1

+QSPN: "EE","EE","EE",0,"23430"

Regarding luci-app-modemdata - I also have that loaded, but please see my other post, as the info it displays is not as complete as 3ginfo-lite (unless the two can't be used together?)

And also, the info is displayed in vertical 'pages' and that truncates the sides...

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DO you want me to post all the info of - sh -x /usr/share/3ginfo-lite/3ginfo.sh  - as there is a lot!!