[Wear OS Q&A, Help & Troubleshooting] DerfStein:
Greetings,

In regards to the activation of the MEO eSIM, I'm pleased to inform was able to activate my MEO eSIM card, by changing one parameter in the code given by the QR Code of the eSIM card. I was able to achieve the resolution by comparing the MEO eSIM with the free eSIM that I requested from NOS using their website. I shall now describe how I activated the MEO eSIM.

First, as mentioned before, you need to have a Vodafone SIM card from the UK, Germany, or Spain (or having an Orange sim card from Spain or France) and insert it into the device in other to enable the option in the Wear OS App to add an eSIM. You have to replace your main SIM with one of those Vodafone or Orange SIM's (or choose them as primary SIM's for both phone and internet) and reload the app and it must stay that way until you finish adding your eSIM to your watch.

Now, I shall share what I discovered.

When I tried to activate the MEO eSIM after getting the card, it was unable to activate it. So I decided to get a free eSIM from NOS to see if that one would activate. And it now prompted me if I wanted to activate the eSIM. Knowing the NOS eSIM worked and the MEO one didn't, I decided to dig it further by scanning the QR code with a QR code reader and comparing the code the NOS eSIM provided with the one MEO provided. And it was there I discovered a potential way of solving the issue.

The MEO eSIM(the one that didn't work) came with this code in the QR code:

LPA:1$RSP-0006.OBERTHUR.NET$[eSIM activation code]

And this is what came with the NOS eSIM one(which did work):

LPA:1$rsp-0001.oberthur.net$[eSIM activation code]

As you can see, both MEO and NOS use oberthur.net as the server for eSIM activation, with the only difference being that MEO had RSP-0006 instead of rsp-0001.

So, I changed the code of the MEO eSIM from RSP-0006.OBERTHUR.NET to rsp-0001.oberthur.net, maintaining everything else the same, created a QR code using this changed code, scanned the code and it now requested if I wanted to add my MEO eSIM to the device. I accepted it and it took a minute or two to add the eSIM to my smartwatch. The MEO eSIM was finally added successfully. 👌

After successfully adding the eSIM to my smartwatch, I pressed done on my phone (from that point on you can change the default sim card on the phone to your main first and then remove the vodafone card). Restarted my smartwatch, gave it a couple of minutes for everything to be in order, and voilá, everything was in order. In my case, both internet and phone calls (while disconnected from my phone) worked without major issues on my part.

Note for MEO users: If you want to receive calls on your watch and you're you're using a SIM for "internet-sharing" (a service that MEO provides to share mobile data from a existing phone number to another device besides the main device), aside from having the cellular connection on, you need to dial *131# on your smartwatch and redirect all calls to the smartwatch instead of the main device. DON'T FORGET TO DIAL THIS NUMBER ON YOUR EXISTING DEVICE IF YOU WANT YOUR CALLS TO GO BACK TO YOUR MAIN DEVICE!!

Below here's a screenshot with proof of being able to add the MEO eSIM on my smartwatch.

Hope this discovery of mine helps. 💪