Figure 48
Analysis: "<- +CREG: 0,5" and "<- +CREG: 0,1" indicate successful
registration, while "<- +CGATT: 0" indicates failure to attach to the
network. This could be due to SIM card being tied to a specific IMEI or
running out of data.
Solution: Check SIM card status (payment, validity) or replace SIM card
if necessary.
(5) SIM Card Internet Connection Issue
Symptom: On the Modem Management page of the WebUI, SIM Card
status shows "Inserted" and the 4G module obtains an IP address, but the
Log displays "<- +CDNSGIP: 0,8".
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