<div dir="ltr">Hello,<div><br></div><div>I'm learning Modem Manager, but looking at the output that you provided it appears that the modem is registered on Vodafone (current), not DT.</div><div><br></div><blockquote style="margin:0 0 0 40px;border:none;padding:0px"><div><b>$ mmcli -m 0 --3gpp-scan --timeout=120</b></div><div><b> ---------------------</b></div><div><b> 3GPP scan | networks: 26203 - o2 - de (lte, forbidden)</b></div><div><b> | 26202 - Vodafone (lte, current)</b></div><div><b> | 26201 - TDG (lte, available)</b></div></blockquote><div><br></div><div>You might have to issue a command to push the modem to DT?</div><div><br></div><div>--3gpp-register-in-operator=MCCMNC ??</div><div><br></div><div>Are you certain the IMSI is not providing access/roaming to Vodafone?</div><div><br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><br></div><div>--</div>Scott C. Lemon<div><font color="#999999">Principal IoT Solutions Engineer</font></div><div><br><div><a href="https://www.Twilio.com" target="_blank"><img src="https://docs.google.com/uc?export=download&id=1oCKSDep8oaXJUdRv-Z1g5t-vIABC2ehn&revid=0BybzcoZgn0BkU0E1bGNSY3JES3ZCaGZzMGV0Sk5WOFZFYmQ4PQ" width="96" height="28"></a><br></div></div><div><br></div><div><font color="#999999">Mobile:</font> +1 (801) 336-4476</div><div><font color="#999999">Email:</font> <a href="mailto:slemon@twilio.com" target="_blank">slemon@twilio.com</a></div><div><br></div></div></div></div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, May 31, 2021 at 3:21 AM Andreas Hartmann <<a href="mailto:hartan@7x.de">hartan@7x.de</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hello,<br>
<br>
<br>
I'm looking for guidance diagnosing what is wrong with the Quectel EG25<br>
modem in my PinePhone. I am aware that the modem works for pretty much<br>
all people, however there seem to be some exceptions to this, including<br>
me. I have tried several Operating Systems (Manjaro, postmarket OS,<br>
Fedora, mobian) but with none of these I had any success so far.<br>
Currently I'm tempted to believe that the hardware in my phone isn't<br>
entirely functional, but I wanted to make sure of that before randomly<br>
replacing parts.<br>
<br>
The issue I see is that the modem is recognized by the OS, and I can<br>
communicate with it through ModemManager, too. But it cannot connect to<br>
my carrier. I can neither make phone calls, nor receive SMS or setup a<br>
mobile data connection. However, the modem clearly shows that is has a<br>
signal reception, and I can confirm that a signal is present from<br>
another Android phone. I have suspected the SIM card, but when I insert<br>
it into an Android device it works just fine. Just to make sure I have<br>
even removed the SIM PIN, but that hasn't changed the situation (apart<br>
from some added convenience for me). I live in Germany, and the SIM is<br>
registered with "Deutsche Telekom".<br>
<br>
I can confirm that a 3GPP scan yields useful results:<br>
<br>
```<br>
$ mmcli -m 0 --3gpp-scan --timeout=120<br>
---------------------<br>
3GPP scan | networks: 26203 - o2 - de (lte, forbidden)<br>
| 26202 - Vodafone (lte, current)<br>
| 26201 - TDG (lte, available)<br>
```<br>
<br>
As my operator is "Deutsche Telekom", the correct MCC/MNC is 26201, but<br>
mmcli shows that modem attempts to register with 26202. I seemingly<br>
cannot override this:<br>
<br>
```<br>
$ mmcli -m 0 --simple-connect="apn=internet.t-mobile,user=t-<br>
mobile,password=tm" --timeout=120<br>
error: couldn't connect the modem:<br>
'GDBus.Error:org.freedesktop.ModemManager1.Error.MobileEquipment.Networ<br>
kTimeout: Network timeout'<br>
```<br>
<br>
I attempted to define an initial bearer with `mmcli -m 0 --3gpp-set-<br>
initial-eps-bearer-settings`, but that didn't change the situation.<br>
The simple-connect doesn't work either, even if I explicitly specify<br>
the operator ID to use.<br>
<br>
Interestingly the behavior is pretty consistent. It happened to me with<br>
the stock firmware that the Pinephone Modem (Manjaro edition) shipped<br>
with in December/2020, it persisted after I had updated to the most<br>
recent modem firmware available February/2021, and it's still there<br>
after flashing biktorgjs custom firmware [1].<br>
<br>
I have tried to use various APN settings, including:<br>
<br>
1. The one mentioned in the Pine64 wiki [2]<br>
2. APN "internet.telekom", which is available on my Android device<br>
3. APN "<a href="http://internet.t-d1.de" rel="noreferrer" target="_blank">internet.t-d1.de</a>", which my Android device actually uses<br>
<br>
I don't know whether this is relevant, but the SIM is part of a<br>
multisim contract (Same phone number, same data plan for all SIMs).<br>
<br>
Curiously, recently I could accept a phone call on the Pinephone and<br>
talk to the other person. However this was a unique event and I<br>
couldn't reproduce it ever since. I can neither make calls, nor use<br>
mobile data.<br>
<br>
I'm running out of ideas as to what may cause such a behavior. I'd be<br>
thankful for any hints on what else to try, or possibly a diagnosis on<br>
whether the Modem is actually broken... Thank you in advance!<br>
<br>
<br>
Cheers,<br>
Andreas Hartmann<br>
<br>
<br>
<br>
[1]: <a href="https://github.com/Biktorgj/pinephone_modem_sdk" rel="noreferrer" target="_blank">https://github.com/Biktorgj/pinephone_modem_sdk</a><br>
[2]: <a href="https://wiki.pine64.org/wiki/PinePhone_APN_Settings#Telekom_.28Germany.29" rel="noreferrer" target="_blank">https://wiki.pine64.org/wiki/PinePhone_APN_Settings#Telekom_.28Germany.29</a><br>
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</blockquote></div>