Question about Find X3 Neo - 433636

What is meant by: "This smartphone has not been approved/tested for the Sunrise 5G network. As a result, we cannot guarantee 5G functionality for digitec connect and other providers using the Sunrise network with this device." I am with Sunrise. Can I now use the device for 5G or does this not help me at all? Can someone please explain this to me? Or is there an up-to-date list somewhere where you can see which device can use 5G with which provider? Many thanks