For the second time within a month I have no GSM connection and I'm not able to reestablish the connection.

The SIM card is "Congstar" Prepaid (with enough money on the card). The Network is 2G and connections are normally without any problems here.

What I can see, is that I have a signal around -70 dBm, but can't get a network registration:

Cellular Modem

MODEM Status

Model: SIM5360

Network Registration: Searching

Provider:

Signal: -69 dBm

Mode:

State: NetWait

Mux: Status up

PPP: Not running

GPS: Not running

I can't get an ICCID

Cellular modem configuration

SIM ICCID: (power cellular modem on to read) Power mode of cellular is now on

This is the log output

log level debug cellular

D (455339) cellular: mux-tx #3: AT+CREG?;+CCLK?;+CSQ

D (455349) cellular: mux-rx-line #3: AT+CREG?;+CCLK?;+CSQ

D (455359) cellular: mux-rx-line #3: +CREG: 0,2

D (455359) cellular: mux-rx-line #3: +CCLK: "80/01/06,00:07:36+08"

D (455359) cellular: mux-rx-line #3: +CSQ: 22,99

D (455359) cellular: mux-rx-line #3: OK

D (456339) cellular: mux-tx #3: AT+CPSI?

D (456349) cellular: mux-rx-line #3: AT+CPSI?

D (456349) cellular: mux-rx-line #3: +CPSI: NO SERVICE,Online

D (456349) cellular: mux-rx-line #3: OK

D (457339) cellular: mux-tx #3: AT+COPS?

D (457349) cellular: mux-rx-line #3: AT+COPS?

D (457349) cellular: mux-rx-line #3: ERROR

and this is the Info output on the console

I (1444379) gsm-mux: Start MUX

I (1444449) gsm-mux: Channel #0 is open

I (1444459) gsm-mux: Channel #1 is open

I (1444459) gsm-mux: Channel #2 is open

I (1444469) gsm-mux: Channel #3 is open

I (1444479) gsm-mux: Channel #4 is open

I (1444789) webserver: HTTP POST /api/execute

I (1444799) webcommand: HttpCommandStream[0x3f8ba0b4]: 3478800 bytes free, executing: cellular status

I (1445339) cellular: State: Enter NetWait state

I (1445599) webserver: HTTP POST /api/execute

I (1445599) webcommand: HttpCommandStream[0x3f8ba0b4]: 3478584 bytes free, executing: cellular status

I (1455359) cellular: Network Registration status: Searching

I (1455359) cellular: Signal Quality is: 22 (-69 dBm)

I (1461919) webserver: HTTP GET /shell

I (1475359) cellular: Signal Quality is: 18 (-77 dBm)

I (1485359) cellular: Signal Quality is: 21 (-71 dBm)

The live events show this

Live Events

[08:02:08]system.modem.poweringon

[08:02:08]egpio.output.0.high

[08:02:10]egpio.output.0.low

[08:02:15]system.modem.installed

[08:02:15]system.modem.poweredon

[08:02:35]system.modem.muxstart

[08:02:36]system.modem.netwait

And this is my module information

Module

Last boot was 1719 second(s) ago

Time at boot: 2023-04-13 07:35:21 CEST

This is reset #0 since last power cycle

Detected boot reason: PowerOn (16/14)

Reset reason: Unknown/unset (0)

Crash counters: 0 total, 0 early

Hardware: OVMS WIFI BLE BT cores=2 rev=ESP32/1; MODEM SIM5360

Firmware: 3.3.003-413-ge0a8e914/ota_0/main (build idf v3.3.4-849-g6e214dc33 Apr 12 2023 20:20:24)

Last time this happened I was able to get the connection back by performing some esotheric button pressing on "Start Modem", "Stop Modem" and "Power cellular Modem on" in the WebUI, but now it does not help.

I compiled the newest version yesterday and I did some reboots of the module and I even pulled the fuse to completely power off my OVMS in the car, but no success.

Is there anything I can do to do some more troubleshooting? Any thoughts on possible causes?

Thanx

Regards

Chris