APN still correct and active?
Not denying that you have a problem, but my suspicion is that the physical SIM issue is not the same problem as the eSIM issue, as it seems to make sense that the OpenEUICC switch is what is causing the eSIM problem.
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Rik, I had a physical SIM card in the first Pixel 8 Pro at time of upgrade to 6.6, when this problem began. I didn’t suspect it was the upgrade so I called my service provider (Patriot Mobile) and began all the troubleshooting steps. During those steps is when they suggested we remove the physical SIM and use an eSIM. So, to answer your question, this problem exists with both a physical SIM and an eSIM. I hope this helps clarify.
Unlike the ludicrous suggestion above in this thread that iode is only for developers and power users, I am not that, but I can figure most stuff out if given the time. Where do I go to check APN and what should I see?
I tried, but the APN can only be accessed once the SIM or eSIM was recognized.
Maybe there is a “secret” code, to reveal that. *#*#4636#*#* (Display device information) does not show the APN for me 
Same for me.
Found the solution for eSIM:
Open the OpenEUICC app → activate “Dual SIM” in the three-dot-menu.
After that enrolling the eSIM works 
A already stored eSIM is recognized, BUT the APN settings were empty. Turning the SIM on and off helped.
I have a working eSIM now.
This has to go into the docs! Please!
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I checked my OpenEUICC settings in both of my Pixel 9 Pro’s and the “Dual SIM” is already check marked. If what you suggest is correct, then mine should have worked. For clarification, by default, your Dual SIM was unchecked?
Correct. Unchecked.
Did you refresh in the OpenEUICC app? Toggled airplane-mode? Restarted?
Yes, tried airplane mode, with and w/o Wi-Fi enabled and restarted the phone many times. None of that worked.
Lasts night I flashed my phone back to iode 6.5, in the hopes that would resolve this issue. I received a new eSIM this morning and I have the exact same issue still. Even on 6.5. Which is crazy because my phone was working on 6.5, it wasn’t until upgrading to 6.6 that his began.
I’m at my wits end and now i’m thinking of upgrading to 6.6 again and try messing with OPENEUICC.
It’s really sad and very telling that iode is not monitoring this thread and has not responded to my email to them last week. It demonstrates they really don’t give a crap about their users. 
Update: As a last resort, I just upgraded from 6.5 to 6.6, again.
I was hoping I could find something in OpenEUICC that I overlooked the first time. Nope, still can’t get the phone to recognize the eSIM. Doesn’t help that the Slot Mapping settings are more than confusing, I can’t make heads or tails of these settings or what they are supposed to do.
I pinged Rob Braxman, no response yet, I’m sure he is a busy guy. 
I wonder if the difference here is that @daffy has a brand new unused eSIM, so how to get it activated may be slightly different. I believe this is the upstream project BTW: PeterCxy/OpenEUICC: eSIM LPA (Local Profile Assistant) implementation for Android. System privilege or ARA-M allowlisting required. - Angry.Im Software Forge
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@daffy I am trying to get input on how to revert for you, it could be the case that the Pixel 8 Pro is not compatible with OpenEUICC. I am not familiar enough to know if the problem could be carrier related though as well?
@vince31fr does confirm that on a Pixel 8 OpenEUICC works perfectly, however.
Alternatively, can you inquire with the carrier about re-activating the physical SIM?
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Can you get some screenshots for clarification? Those may help @daffy possibly. Up above was some confusion about the IMEI not showing on the carrier side correctly, is this expected (is there a bit of IMEI faking going on or something)? I just don’t know anything about eSIM shenanigans but am willing to learn 
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@rik Yesterday, I went to Best Buy and purchased a Mint Mobile physical SIM card and it worked perfectly in my Pixel 8 Pro on 6.6
Yesterday, I also asked my carrier the same question about re-activating the physical SIM card and they told me it can NOT be done.
My carrier has access to all three major networks and so they suggested we switch my eSIM from ATT to VZW and try that. So, since yesterday afternoon my phone number has been in the process of porting… I called this morning and it is still porting. They said it can take up to 24 hours. uhg.
If the VZW eSIM does not work then I’ll go to a local VZW store and get a physical SIM card today.
Question: I don’t know much about this stuff but is OpenEUICC only for eSIM’s? Or does it also play a role with physical SIM cards?
Yes, that is only for eSIM management.
If you are able, I would stay away from eSIM it is too bad the carrier pushed you quickly to that as a solution as it is typically deeply embedded with Google services which obviously iodé, while compatible with lots of it via microG, isn‘t really known to carriers in the USA
Sorry for the headaches, if I had known you were here (USA) earlier, and were willing to consider a carrier change, I would have recommended US Mobile to you, they can set you up with physical (or e) sims to all 3 major networks, and their prices are excellent. I use them with their “Warp” (Verizon) and “Light Speed” (T-Mobile) networks, both physical sims. Very friendly to work with too (they helped get devices running Ubuntu Touch / Mobian / Droidian on their network no problems in the past).
By the way, thanks for your patience (and persistence) in working through this.
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@rik Do you have a US Mobile Referral Code? Send it and I’ll use it right now. I will sign up and get an eSIM from them just for troubleshooting while I’m waiting on my number to finish porting. Thanks for all of your help!
Sorry Rik, couldn’t wait any longer to set up the US Mobile account. Send me your Referral Code and I’ll see if they will still apply it after my purchase.
Update: I just added a eSIM to my Pixel 8 Pro on 6.6 from US Mobile - Light Speed (T-Mobile) and it works perfect. To me, at this point, this does in fact appear to be an issue with Patriot Mobile cell provider using ATT network. I am still waiting on Patriot Mobile to notifiy me that my phone number has been fully ported to VZW. Stay tuned. This is costing me a fortune between new phones and cell plans… lol.
OK let me see if I can get this straight:
You have (had) Patriot Mobile (ATT) physical sim. When service lost after 6.6 upgrade, they then switched you to eSIM (but registration issues with it).
Then they started switching your Patriot (ATT) eSIM number to Patriot (VSW), and that is still porting.
But now you added a US Mobile (TMobile) new number (eSIM) as a test and it works.
Question: how was using OpenEUICC, was it intuitive enough or? I did request we get some documentation on that newer feature, but I won’t be making it unless I get an eSIM… I’ll defer to the others that use these things
Let’s leave this thread open until you can confirm that with Patriot VZW eSIM you can register it with OpenEUICC, but I think with your case getting addressed (by a very crooked route), and others on this thread are working again, after that we can mark it complete?
PS: Here is my US Mobile referral link in case others want to switch to US Mobile. I would guess it isn’t easy to retroactively apply, no worries!
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When I added the US Mobile (TMobile) eSIM yesterday, I did not have to touch OpenEIUCC… it just worked.
Update: I just got off the phone with Patriot Mobile, my number finished porting after more than 24 hours. She told me for some reason it was stuck and that this does not normally happen. Anyway, she issued me a new Patriot VSW eSIM, installed it and it worked. My original phone number is now with VZW and working correctly with an eSIM on the same Pixel 8 Pro with 6.6. I am having her mail me extra physical SIM cards and once received, I will move back to a physical SIM card for my phone number. Then I will keep my US Mobile (TMobile) line as an eSIM and run with dual SIMS for redundancy and coverage.
Note: when we added the Patriot (VZW) eSIM this morning, I again did not have to touch OpenEUICC, it simply worked. So, I can’t speak much about it but I would like to understand how the Slot Mapping works and I thought I read somewhere that OpenEUICC will allow more than just two eSIMs. ???
Let me know if you have any other questions, I want this thread to be useful, if this happens to others.
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As a non eSIM user, I am a bit confused. So how do you “add it”. They send you a ??QR Code?? that you then scan?? But surely a QR Code is just a bit of data that has to be processed by an app, right? I ask because there is a user on the brax forum asking how to add an eSIM and I am still clueless
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My experience is with Patriot Mobile, US Mobile and Mint Mobile. With all three, adding an eSIM is done by a QR code that you scan with your device.
I’m told by others that just opening the device camera and scanning the QR will work, but in my case with a Pixel 8 Pro running iode v6, that does not work. You must click SETTINGS, NETWORK & INTERNET, SIMs, Add SIM, Download eSIM and then follow the prompts.
Patriot Mobile told me that adding a VSW eSIM can be done OTA, but again, that did not work on my phone so we tried added the eSIM manually and it didn’t work so then she sent me a QR code and that did the trick.
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