I have VoLTE activated and roaming ON, I have internet on my phone but I can’t set my mobile plan.
Basically, VoLTE, abroad is not recognized by Apple as adveertised here https://www.simyo.nl/klantenservice/netwerk/volte-4g-bellen
Error message: Apple Watch cannot use mobile plan while roaming internationally.
I guess this is the same problem: https://forum.simyo.nl/simkaart-en-esim-86/waarom-kan-de-esim-niet-op-mijn-apple-watch-46637
Hello
Thankyou for your message.
It is indeed true that we do not yet support this. We use the KPN network, but we are a separate provider.
When this option becomes available, we will of course share this on our channels.
If you have any other questions please let us know 
.
Greetings,
Amy
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