Best bargain of the year is my mobile sim from Smarty. 60GB data and all my calls and texts for £10 a month for another year and no increases in the monthly price as well.
My wife has a OnePlus Nord 2 5G with the exact same issue as the OP - when I contacted SMARTY over the issue about 6 months ago, I was advised that the phone wasn't compatible for WIFI calling on SMARTY and that it MAY be provisioned some time in th...