Sim cards for murena phone in UK

I’ve just bought a Murena One. I’m in the UK. I’ve tried sim cards from several service providers and none seem to be recognised by the phone. I’d appreciate some help.

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Not had any reply. I’m wasting money trying to get various UK sim cards to work with this phone.

I don’t have a Murena One so cant comment, I do have a Fairphone 5 with /e/os preinstalled purchased from Murena. I use the MVNO Honest currently which uses the Three network without any issues.