It’s uk and I had the V sim from Vodafone but it gets shut off in August so looking to replace it, looks like it’s going to be a headache
Mine is a UK one with Vodafone V-Sim, and tonight is the first time I've tried to use any other SIM cards.
I've used both Lebara and EE SIM cards taken from family members phones, and I was able to get both working without any issues.
When inserting a new SIM card, the camera needs to be powered off and back on.
It then gives audible notice to activate SIM card.
The Lebara one, I clicked on SEARCH, then scrolled right to the bottom of the list (alphabetical in country), then up a couple and selected Vodafone United Kingdom.
The pre-filled settings;
APN: ciot.vodafone.com
Username: vodafone
Password: vodafone
This worked fine, and the Cloud connected.
I then tried EE SIM card, and when searching, it only had the same results listed, so again I just selected Vodafone United Kingdom (near bottom of the list, but then I edited the APN details to;
APN: everywhere
Username: eesecure
Password: secure
And that worked fine too.
These things can be very fiddly sometimes, so don't give - just keep trying.